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Review

Heavy Metal and Metalloid Pollution of Soil, Water and Foods in Bangladesh: A Critical Review

by
M. Mominul Islam
1,2,
Md. Rezaul Karim
3,*,
Xin Zheng
1 and
Xiaofang Li
1,4,*
1
Key Laboratory for Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
Department of Applied Nutrition and Food Technology, Islamic University, Kushtia 7003, Bangladesh
4
CMLR, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
*
Authors to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2018, 15(12), 2825; https://doi.org/10.3390/ijerph15122825
Submission received: 12 October 2018 / Revised: 30 November 2018 / Accepted: 7 December 2018 / Published: 11 December 2018
(This article belongs to the Special Issue Remediation and Analysis of Soil, Air, and Water Pollution)
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Abstract

:
Bangladesh is a densely populated developing country. Both industrialization and geological sources have caused widespread heavy metal and metalloid pollution in Bangladesh, which is now posing substantial threats to the local people. In this review, we carried out one of the most exhaustive literature analyses on the current status of Bangladesh heavy metal and metalloid pollution, covering water, soil, and foods. Analysis showed that soils near high traffic and industrial areas contain high concentrations of heavy metals and metalloids. Agricultural land and vegetables in sewage-irrigated areas were also found to be heavy metal- and metalloid-contaminated. River water, sediment, and fish from the Buriganga, Turag, Shitalakhya, and Karnaphuli rivers are highly contaminated with cadmium (Cd), lead (Pb), and chromium (Cr). Particularly, groundwater arsenic (As) pollution associated with high geological background levels in Bangladesh is well reported and is hitherto the largest mass poisoning in the world. Overall, the contamination levels of heavy metals and metalloids vary among the cities, with industrial areas being most polluted. In all, this review provides a quantitative identification of the As, Pb, Cd, and Cr contamination hotspots in Bangladesh based on the literature, which may be useful to environmental restorationists and local policy makers.

1. Introduction

Heavy metals and metalloids are non-biodegradable in nature and can affect human health directly and indirectly [1]. Chronic exposure of heavy metals and metalloids can damage various organs like kidneys, liver, lung, brain, and bones [2,3]. Bangladesh is one of the most densely populated countries in the world with a population density of 1278 people per square kilometer [4]. Case reports on poisoning of heavy metal and metalloid exposure have been increasing in recent years in Bangladesh. In Bangladesh, ground water arsenic (As) contamination has become a major public health problem. Millions of people are drinking As-contaminated water and this mass poisoning is the biggest As disaster in the world [5,6,7]. Rapid industrialization, urbanization, and various anthropological activities also have driven the wide dispersion of cadmium (Cd), lead (Pb), and chromium (Cr) in the environment. Rivers surrounding Dhaka and Chittagong such, as the Buriganga, Turag, Shitalakhya, and Karnaphuli rivers are highly polluted by Cd, Pb, and Cr [8,9,10,11]. Industrial effluents and sewage can deteriorate river water in many aspects. Fish species from polluted rivers also contain elevated concentrations of heavy metals [12,13]. Soil near the industrial areas of the big cities in Bangladesh, such as Dhaka, Gazipur, Chittagong, and Bogra, displayed excess heavy metals and metalloids [14]. High traffic loads [15] are also responsible for high heavy metal and metalloid pollution in water and soil. Meanwhile, agricultural products from contaminated soil are frequently found to contain high concentrations of heavy metals and metalloids, which may impact human health profoundly [16].
The widespread heavy metal and metalloid pollution in Bangladesh has received attention worldwide, and there have been several excellent reviews dedicated to specific metals or environmental media [6,17,18]. This paper aimed to conduct an extensive literature review in order to systematically evaluate the heavy metal and metalloid pollution status of heavy metals and metalloids in Bangladesh in recent decades. Metadata was collected from government reports and publications covering As, Pb, Cd, and Cr concentrations in soil, river, and crops. Based on this data, major pathways for the exposure of local people to metals and metalloids were depicted and hotspot regions for risk management were located (Figure 1), which may provide useful information to government and environmental researchers.

2. Soil Heavy Metal and Metalloid Pollution

Major sources of soil heavy metal and metalloid pollution include municipal wastes, industrial effluents, chemical fertilizers, and pesticides [19]. Irrigation with contaminated groundwater and river water are also responsible for soil contamination. Heavy metal and metalloid pollution of farmland and crops can substantially impact food safety as well as human health [20]. Soils in Bangladesh polluted by heavy metals and metalloids have been found to be impacted by various pollution sources (Table 1).
In Bangladesh, cultivation in the dry season mostly depends on irrigation by deep shallow tube wells (STWs). Bangladesh has the highest percentage of As-contaminated STWs, and yearly increases of up to 0.1 mg of As per kg of soil can occur as a result of irrigation, especially in paddy fields [21]. Duxbury et al. [22] stated that paddy fields irrigated with As-contaminated water for ten years would add 5–10 mg/kg As into soil. Agricultural soil irrigated with Shitalakhya river water in Narayangonj presents elevated Pb (28.13 mg/kg), Cd (0.97 mg/kg), and Cr (69.75 mg/kg), which are higher than safe limits [23]. Rice is the staple food in Bangladesh, with average rice consumption of 400 to 600 g per day by an adult [24]. Therefore, risks from inorganic As in rice from regions of high soil As pollution may affect local people directly [24,25,26].
Industrial wastes and chemical pesticides have also contributed to soil As contamination in Bangladesh. In urban areas, untreated effluents from industries are directly adding heavy metals and metalloids into the nearby water and soil [14]. A number of studies on farmland nearby the Dhaka Export Processing Zone (DEPZ) indicated that irrigation with contaminated sewage water increased soil heavy metal and metalloid load [14,40]. Hasnine et al. [40] stated that agricultural fields nearby the DEPZ displayed Cr concentrations of 2753.2 mg/kg in the surface soil and 1039.2 mg/kg in the sub-surface layer. Results by Rahman et al. [14] showed that in the dry season agricultural soil nearby the DEPZ contained 4043 mg/kg of As and 49.66 mg/kg of Cr. Waste water from the Hazaribagh leather industrial area in Dhaka was found to be responsible for high Cr (976 ± 153 mg/kg) concentrations in the local soil [27]. Soils from several industrial areas in Gazipur and Barisal also presented much higher Cd than the recommended values [29,32].
Mining has a great impact on soil heavy metal and metalloid load in some parts of Bangladesh. Coal, coal ash, and coal- fired boilers have great impacts on environmental Pb. Soil from the coal mine affected farmland at Barapukuria, Dinajpur, was shown to contain excess Pb at a level of 433 ± 5.66 mg/kg [36]. Some other important sources for soil heavy metals and metalloids pollution in Bangladesh have been reported as well. Industrial and urban effluents release large quantities of heavy metals and metalloids, which are responsible for high heavy metals and metalloids in soil and water. Soil from Chittagong and Bogra city were found to be polluted by Cd mainly due to rapid industrialization and urbanization in recent decades [30,31]. Excessive use of phosphate fertilizers and pesticides are responsible for increasing heavy metals and metalloids in the soils of commercial and residential vegetable plots in Pakshi, Pabna [37].

3. Water Heavy Metal and Metalloid Pollution

Most areas of Bangladesh are rainy regions that are rich in rivers. The river systems and rainfall provide an important way for the regional and cross-regional dispersal of pollutants, particularly heavy metals and metalloids [41] (Figure 2). The heavy metal and metalloid water pollution in Bangladesh has been well documented in recent years.
Arsenic pollution in Bangladesh is one of the well-studied environmental issues in the world. Arsenic is widespread in the Earth’s crust [42]. In Bangladesh, drinking water is one of the major sources of inorganic As because of geological factors, especially in the Ganga-Brahmaputra-Meghna river basin [6,43]. The permissible level of As in drinking water established by the World Health Organization (WHO) and the United States Environmental Protection Agency (USEPA) is 10 µg/L, however, in many developing countries like Bangladesh it has been adjusted to 50 µg/L because of inadequate analytical instruments for lower arsenic concentrations in water [44,45]. In water, As was found mostly in the oxidation states (+III and +V) [46]. In the 1970s and 1980s, the Bangladesh government and United Nations International Children’s Emergency Fund (UNICEF) set up millions of hand tube wells around the country to combat against water- and foodborne communicable diseases. Unfortunately, these hand tube wells became major sources of As [7,47]. The Department of Public Health Engineering (DPHE) of Bangladesh first surveyed groundwater As contamination in 1993 [47,48]. In Bangladesh, 61 districts (excluding the Hill tracks areas) out of 64 are affected by As, and the level of As in drinking water is more than 50 µg/L [47,48]. About 20 million people in Bangladesh are using such tube wells water with excess As [7]. Northwest regions of Bangladesh are more affected by As [6,49]. According to the Bangladesh Bureau of Statistics (BBS), about 77 million Bangladeshi people are affected by As-contaminated water [50]. The As crisis in Bangladesh was thought to be the largest mass poisoning in human history [44]. In recent years, new cases of toxicity have continued to emerge in different parts of the country [44,49]. During 1996–2006, many government, national, and international organizations, including educational institutions, set up As monitoring and mitigation programs in Bangladesh [47,51,52]. Marking of the contaminated tube wells was one of the major steps taken by the mitigation program to identify the contaminated wells, however, this has had a limited effect at lessening the calamity [53]. Now, one of the most important mitigation programs has been setting up As-free deep tube wells in the most contaminated areas in order to provide safe drinking water to the local people.
Bangladesh is a riverine country, and rivers have a great impact on its transportation, fisheries, and industrial activities. The biodiversity and ecology of rivers can be substantially affected by metal and metalloid contamination [54]. Untreated and partially treated effluents from industries are the main cause of elevated heavy metals and metalloids in river water [55]. The water of the Buriganga River in the Hazaribagh area receives daily about 22,000 L of toxic wastewater from 200 tanneries [56]. Frequent irrigation with this river water can contaminate agricultural soil and ultimately affect crop yield as well as food safety [57,58].
Dhaka is the largest city in Bangladesh, located on the bank of the Buriganga River. The other important rivers near Dhaka are the Turag, Balu, Dhaleswari, and Shitalakhya rivers. During the last few years heavy metal and metalloid load together with organic pollutants of these rivers increased to unexpected levels from various sources; therefore, these rivers are known as the “Biologically Dead Rivers” in Bangladesh [59]. The sediments of the Buriganga River also contain concentrations of Pb, Cd, and Cr higher than the standard values [60,61] (Table 2). The Turag River contains Pb (0.073–0.1mg/L) and Cr (0.039–0.061 mg/L) in higher concentrations because of the heavy industrialization on both sides of this river [55]. The sediment of this river also contains Cd (0.8 mg/kg) and Cr (178 mg/kg) in excess concentrations [62]. More case reports on river sediment pollution by heavy metals and metalloids can be found in Table 3.
The heavy metal and metalloid pollution of Bangladesh rivers was also reflected by the many case reports on heavy metal and metalloid pollution in fish in recent years (Table 4). A variety of fish species from the Buriganga river were found to contain Pb, Cd, and Cr concentrations above the food safety guidelines by the World Heath Organization and Food and Agriculture Organization [12,63]. For example, Labeorohita (Rohu) from the Buriganga River was determined to be polluted by Pb (6.98 mg/kg) and Cr (18.84 mg/kg) [12].
The Shitalakhya River is located on the northwestern side of the capital. Sediments from the Shitalakhya River were mainly polluted by As (14.02 mg/kg) and Cr (74.82 mg/kg) [64].
The largest port of the country is situated at the bank of the Karnaphuli River. This river is contaminated by various industrial wastes and shipping vehicles [79]. Ali et al. [8] stated that the sediment of this river contained excess Cd and Cr. Islam et al. [13] found that Chapila fish from this river was highly contaminated by Pb (4.94 ± 0.60 mg/kg). The sediments of coastal ship breaking areas in Chittagong, such as the Bhatiari and Sonaichhari areas, were substantially contaminated by Pb and Cd [80].
The water of the Karotoa River is polluted by various industrial, pharmaceutical, and municipal wastes from the Bogra city and the sediment of this river is severely contaminated by Cd (10.85 mg/kg) [73]. It was found that fishes from the Meghna River and the Paira River were both contaminated by Pb [74,77]. Fortunately, river water, sediments, and fishes from non-industrial areas like Rupsha [81,82] in Khulna, Possur [69], near the Mongla port, Bramaputra [33], near Chilmari, and Kurigram and Dakatia [83], near Chandpur, remain uncontaminated based on available reports.

4. Crop Heavy Metal and Metalloid Pollution

As a tropical country, Bangladesh produces more than 90 kinds of vegetables and 60 kinds of fruits [84]. Environmental pollution and nature of the soil directly affect the heavy metal and metalloid content in foods. Chemical pesticides and fertilizers containing heavy metals and metalloids are both major sources of heavy metals and metalloids in foods. Some trace metals are essential in plant nutrition; however, excess heavy metals and metalloids can accumulate in various edible and non-edible parts of plants [85]. Basically, leafy vegetables are more liable to heavy metal and metalloid contamination, due to their rapid growth and direct transfer of metals and metalloids to the leafy parts [86].
Irrigation with As-contaminated ground water is the primary cause of food As contamination in Bangladesh. Organic As in foods is considered to be less harmful. However, As-contaminated crops may contain a large portion of inorganic As [87,88]. Besides drinking water, food As exposure was also found to an be important pathway responsible for As poisoning [21,84,89,90]. Alam et al. [84] found that vegetables grown in the Samta village were contaminated by As. Rice from Brahmanbaria also was observed to contain As (0.24 mg/kg) and Cd (0.331 mg/kg) in higher concentrations than the established safe limits [90]. Safe limits for main metals and metalloids in food stuffs are as follows: As 0.1 mg/kg; Pb 0.05 mg/kg; Cd 0.05 mg/kg; and Cr 2.3 mg/kg [91].
Various studies showed that plants grown nearby industrial areas retain more heavy metals and metalloids than those from non-industrial areas (Table 5). Cabbage (Brassica oleracea) from agricultural land nearby DEPZ contains Pb (22.09 mg/kg), Cd (2.05 mg/kg), and Cr (7.58m mg/kg) in higher concentrations than the safe limits [92]. Edible parts of Spinach (Spinacia oleracea) from the Hazaribagh leather industrial area of Dhaka presented higher levels of As (0.26 ± 0.22 mg/kg), Pb (11.48 ± 4.98 mg/kg), Cd (0.32 ± 0.094 mg/kg), and Cr (44.48 ± 12.59 mg/kg) [27]. Bottle gourd (Lagenaria siceraria) (Pb 1.16 ± 0.01 mg/kg) and water spinach (Ipomoea aquatica) Cr (3.21 ± 0.023 mg/kg) from the Vatiary industrial area of Chittagong both exceeded the safe limits [93]. Potato (Solanum tuberosum) from Bogra was found to be polluted by Pb and Cd [94].
Vegetables grown in high traffic areas were also found to contain higher concentrations of heavy metals and metalloids. Naser et al. [95] found that pumpkin (Cucurbita maxima) grown close to the highway in Joydevpur, Gazipur, contained Pb (4.76 ± 1.03 mg/kg) and Cd (0.20 ± 0.02 mg/kg) in concentrations much higher than those grown in distant areas.
Irrigation with contaminated river water may substantially affect the metal and metalloid concentrations of vegetables. Red amaranth (Amaranthus cruentus) collected from agricultural land surrounding the Turag River were considerably polluted by Pb (1.99 ± 0.44 mg/kg) and Cd (0.84 ± 0.17 mg/kg) [96]. Purple amaranth (Amaranthus lividus) from agricultural land surrounding the Shitalakhya river was polluted by Pb and Cd as well [23].
Market samples provide important insights into the average contamination levels of heavy metals and metalloids in foods in Bangladesh. Rice, fish, and vegetables from Kawran Bazar, Dhaka, were all found to contain Cd and Pb in higher concentrations than the safe limits [97]. In their market-based study, Shaheen et al. [98] showed that mangos (Mangifera indica) presented excess Pb and tomatoes (Solanum lycopersicum) contained excess Cd.

5. Conclusions

Heavy metal and metalloid contamination from both geological and industrial sources has become a major issue for the people of Bangladesh in recent years. Results in the literature clearly showed that heavy metal and metalloid risks in Bangladesh are associated mainly with mining, industrialization, and urbanization. Dense river systems allow the heavy metals and metalloids to be dispersed more easily in some parts of Bangladesh. This review provides one of the most exhaustive literature reviews on the heavy metal and metalloid pollution status in Bangladesh and indicates the urgent need for all relevant sectors to control the emission of heavy metals in Bangladesh.

Author Contributions

Conceptualization, X.L.; data curation, M.M.I.; writing—original draft preparation, M.M.I. and X.L.; writing—review and editing, X.L. and M.R.K.; supervision, X.L.; data analysis and visualization, X.Z.; project administration, X.L.; funding acquisition, X.L. All authors revised, read, and approved the final manuscript.

Funding

This work is supported by the National Key Research and Development Program (2018YFD0800306), Pioneer “Hundred Talents Program” of the Chinese Academy of Sciences (Y726012203), and the Hebei Science Fund for Distinguished Young Scholars (D2018503005).

Conflicts of Interest

The authors declare no conflict of interest.

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Ijerph 15 02825 g001 550
Figure 1. Major pathways of heavy metal and metalloid dispersion and human exposure in Bangladesh.
Figure 1. Major pathways of heavy metal and metalloid dispersion and human exposure in Bangladesh.
Ijerph 15 02825 g001
Ijerph 15 02825 g002 550
Figure 2. Pb, Cd, and Cr pollution hotspots in Bangladesh. Hot spots of heavy metal pollution were in red. As is not considered here.
Figure 2. Pb, Cd, and Cr pollution hotspots in Bangladesh. Hot spots of heavy metal pollution were in red. As is not considered here.
Ijerph 15 02825 g002
Table
Table 1. Recent reports on heavy metals and metalloids pollution in Bangladesh soil (mg/kg).
Table 1. Recent reports on heavy metals and metalloids pollution in Bangladesh soil (mg/kg).
CitySampling SiteSampling Time/Site NumberAsPbCdCrReference
Dhaka (Hazaribagh)Leather industrial area-/41.94 ± 0.3950.32 ± 4.360.45 ± 0.11976 ± 153[27]
Dhaka (City area)High traffic areas-/20NA45.68 ± 25.50.38 ± 0.1431.75 ± 17.55[28]
Dhaka (DEPZ), Dry SeasonFarm land surrounding industrial areaFebruary 2010 to April 2011/204073.1 ± 111627.6 ± 7.90.0072 ± 0.0249.66 ± 34.7[14]
Dhaka (DEPZ), Wet SeasonFirm land surrounding industrial areaFebruary 2010 to April 2011/202326.2 ± 32749.61 ± 11.31.04 ± 2.0334.2 ± 26.5[14]
Gazipur (City area)High industrial and traffic areas-/3NA27.950.4129.21[29]
Bogra (City area)Urban and industrial areasOctober to November 2010/14NA9.61 ± 7.4836.95 ± 0.954.05 ± 2.03[30]
Chittagong (City area)Industrial and high traffic areas-/21NA7.33 ± 0.402.43 ± 0.17NA[31]
BarisalSurrounding cement industry-/42.13 (1.45–2.5)23.39 (11.6–38.52)0.62 (0.5–0.77)38.26 (22.05–55.0)[32]
BarisalSurrounding textile industry-/41.41(1.36–1.45)18.48 (8.2–33.22)1.9 (0.9–3.2)132.5 (95.1–185.4)[32]
BarisalSurrounding medicine industry-/41.67(1.05–1.77)11.42(10.6–12.68)0.78 (0.5–0.87)25.73 (15–30)[32]
Kurigram (Chilmari)Bank of Brahmaputra riverMarch 2012/15NA26.70.4834.7[33]
Tangail (Tarutia)Industrial areaMarch–April 2016/156.1117.462.0111.56[34]
Dinajpur (Barapukuria)Mine affected paddy field soilDecember 2009/1022.44188.61NANA[35]
Dinajpur (Barapukuria)Mine affected farmland soil3017.55 ± 5.66433 ± 95NANA[36]
Pabna (Pakshi)Commercial and residential areas64200 ± 16.8021.29 ± 0.47<0.128.194 ± 0.17[37]
Standards0.112000.4811[38]
Standards for industrial wastes (Irrigated land) mg/L0.20.10.051.0[39]
Notes: NA, not applied/reported; DFPZ: Dhaka Export Processing Zone. For metals and metalloids concentrations, some values were reported with standard errors, and some were reported with the concentration range in brackets.
Table
Table 2. Heavy metals and metalloids pollution in major Bangladesh rivers (mg/L).
Table 2. Heavy metals and metalloids pollution in major Bangladesh rivers (mg/L).
CityRiverMajor Sampling LocationSampling PeriodAsPbCdCrReference
DhakaBurigangaKawtail, Postagola, Sodorghat, ModinanagarOctober 2012 to August 2013NANA0.0104 ± 0.0060.177 ± 0.11[65]
DhakaBurigangaBoth sides of River from Rayer Bazaar to Pagla (30 km)March 20100.134 (0.005–0.22)0.119 (0.1–0.21)0.059 (0.03–0.09)0.114 (0.012–0.18)[66]
DhakaBurigangaBalughat, Shawaryghat, ForidabadNA0.065 ± 0.00470.0093 ± 0.00140.587 ± 0.0441[63]
DhakaTuragTongi Heavy Industrial AreaNANA0.073–0.10.002–0.0030.039–0.061[55]
DhakaTongi (lake)Tongi Heavy Industrial AreaMarch–April 20080.0020.0020.003NA[67]
ChitagongKarnaphuliFishery ghat, Chaktikhal, Mojjartek, KalurghatNANA0.14 ± 0.0310.01 ± 0.0020.25 ± 0.068[13]
ChitagongKarnaphuliFishery Ghat, Sea port, Custom House, marine Academy Bangladesh JettySeptember 2014 (summer)0.023 ± 0.0070.0098 ± 0.00470.0065 ± 0.0030.067 ± 0.017[8]
ChitagongKarnaphuliFishery Ghat, Sea port, Custom House, marine Academy Bangladesh JettyMarch 2015 (winter)0.034 ± 0.00980.0168 ± 0.00610.0106 ± 0.00450.087 ± 0.0174[8]
BograKaratoaBogra district urbanized areaFebruary–September 2013 (winter)0.046 ± 0.0270.035 ± 0.0190.011 ± 0.0080.083 ± 0.027[68]
BograKaratoaBogra district urbanized areaFebruary–September 2013 (summer)0.037 ± 0.0240.027 ± 0.0150.008 ± 0.0060.073 ± 0.027[68]
BagerhatPasurNear Mongla portJanuary to June 2013NANANA0.02[69]
Mongla, BagerhatPasurNANA0.0276–0.016730.01269–0.042670.0042–0.01980.0276–0.07739[70]
KurigramBrahmaputraChilmariNANA0.037NANA[33]
Standards for Irrigation (maximum concentration)0.10.015.00.1[71]
Notes: NA, not applied/reported. For metal and metalloid concentrations, some values were reported with standard errors, and some were reported with concentration range in brackets.
Table
Table 3. Heavy metal and metalloid pollution in river sediments (mg/kg).
Table 3. Heavy metal and metalloid pollution in river sediments (mg/kg).
RiverCity/Sampling SiteSampling Period/Number of Sampling SiteAsPbCdCrReference
BurigangaDhaka (Hazaribagh to Meherbagh)January 2014/7NA31.41.5173.4[60]
BurigangaDhaka (Kholamura launch terminal to Postogola Bridge)Summer 2009/20144754.7511[60]
BurigangaDhakaWinter 2009/20164785.9709[72]
BurigangaDhaka (Watchpur Ghat to Badamtoli Ghat)-/5NA79.8 ± 16.90.8 ± 0.55101.2 ± 42.2[61]
BurigangaDhaka (Balughat, Shawaryghat and Foridabad)-/3NA69.75 ± 4.133.33 ± 0.77177.53 ± 30.19[63]
TuragTongi Bridge to Ashulia-/15NA18.30.8178[62]
TuragTongi Bridge, to Taltola BridgeNANA32.78 ± 3.320.28 ± 0.3343.02 ± 18.31[9]
KarnaphuliChittagong (Fishery Ghat, Sea port, Custom House, Marine Academy Bangladesh Jetty)September 2014 (summer)/716.79 ± 4.7038.33 ± 12.741.51 ± 0.6470.06 ± 30.93[8]
KarnaphuliChittagong (Fishery Ghat, Sea port, Custom House, Marine Academy Bangladesh Jetty)March 2015 (winter)/723.81 ± 6.3949.04 ± 15.062.50 ± 0.8592.11 ± 33.16[8]
KarnaphuliChittagong (Fishery Ghat, Chaktikhal, Mojjartek, Kalurghat)February to April during 2013/5NA4.96 ± 0.600.24 ± 0.020.76 ± 0.12[13]
KaratoaBogra (Bogra district urbanized area)February–September 2013 (winter)/827 ± 1763 ± 161.5 ± 0.77118 ± 50[68]
KaratoaBogra (Bogra district urbanized area)February–September 2013 (summer)/822 ± 1654 ± 151.0 ± 0.5399 ± 38[68]
KaratoaBogra (Bogra City area)March,2011/5NA69.81 ± 27.5710.86 ± 0.928.37 ± 3.35[73]
PasurMongla port in the Sundarbans mangrovesJanuary to June 2013/3NA6.919NA19.369[69]
PasurMonglaNA3.15–19.977.34–55.320.39–3.1720.67–83.70[70]
PairaPatuakhaliFebruary–March and August–September 2012/819 ± 3.049 ± 111.2 ± 0.7367 ± 27[74]
Standards4.8170.0992[75]
StandardsNA310.626[76]
Notes: NA, not applicable/reported. For metal and metalloid concentrations, some values were reported with standard errors, and some were reported with the concentration range in brackets.
Table
Table 4. Heavy metal and metalloid pollution of fishes from Bangladesh rivers (mg/kg).
Table 4. Heavy metal and metalloid pollution of fishes from Bangladesh rivers (mg/kg).
CityRiverSampling TimeSample siteSpecies/Local nameAsPbCdCrReference
DhakaBurigangaAugust to September 2013Kamrangir Char and Amin BazarPuntius ticto0.32 ± 0.013.05 ± 0.090.02 ± 0.005.54 ± 1.52[12]
Puntius sophore0.19 ± 0.013.16 ± 0.080.02 ± 0.004.33 ± 1.35
Puntius chola0.17 ± 0.002.32 ± 0.080.01 ± 0.003.57 ± 1.60
Labeo rohita0.73 ± 0.036.98 ± 0.230.04 ± 0.0018.84 ± 1.72
Glossogobius giuris0.20 ± 0.011.77 ± 0.100.01 ± 0.005.13 ± 0.96
DhakaBurigangaPre-monsoon periodBalughat, Shawaryghat and ForidabadGudusia chapra (chapila)NA9.120.836.27[63]
Glossogobius giuris (baila)NA9.580.816.13
Cirrhinus reba (tatkeni)NA8.030.766.75
Channa punctatus (taki)NA10.310.865.73
Mystus vittatus (tengra)NA12.321.095.47
Pseudeutropius atherinoidesNA8.950.957.34
ChittagongKarnaphuliFebruary to April during 2013Fishery ghat, Chaktikhal, Mojjartek, Kalurghateast zone and Kalurghat west zonePouaNA0.8860.0660.569[13]
ChringNA1.8430.7441.077
RitaNA2.8610.1790.064
ChapilaNA7.7070.4830.099
NarayangongMeghnaJanuary 2016 (winter season)Effluent discharge areaTanualosa ilishaNA0.670.0920.05[77]
Colisa chunaNA0.11NA1.6
Labeo calbasuNA1.91NA1.12
Labeo rohitaNANA0.040.57
Stinging catfishNA1.56NA3.01
Colisa laliaNA6.75NANA
PotuakhaliPairaFebruary–March and August−September 2012NACyprinus carpio (Koi)0.25 ± 0.0490.81 ± 0.170.025 ± 0.0040.78 ± 0.28[74]
Heteropneustes fossilis (Shing)0.27 ± 0.0590.92 ± 0.320.016 ± 0.0120.97 ± 0.26
Colisa fasciata (Kholisha)0.18 ± 0.0220.52 ± 0.300.019 ± 0.0110.70 ± 0.33
Channa striata (Shoil)0.25 ± 0.0600.78 ± 0.270.020 ± 0.0100.69 ± 0.17
Notopterus notopterus (Foli)0.25 ± 0.0570.82 ± 0.360.022 ± 0.0171.1 ± 0.31
Tenualosa ilisha (Hilsha)0.51 ± 0.180.51 ± 0.470.17 ± 0.190.48 ± 0.22
Corica soborna (Kachki)0.37 ± 0.260.58 ± 0.420.20 ± 0.200.44 ± 0.34
Standards1.00.50.11.0[78]
Notes: NA, not applicable/reported. For metals and metalloids concentrations, some values were with standard errors.
Table
Table 5. Heavy metal and metalloid pollution in vegetables and rice (mg/kg).
Table 5. Heavy metal and metalloid pollution in vegetables and rice (mg/kg).
CitySampling SiteSampling PeriodCommon NameScientific NameSample NoAsPbCdCrReference
DhakaSurrounding
DEPZ		January2005 to February 2006Egg plantSolanum melongena12NA11.97 (2.17–21.14)2.91 (0.82–4.85)6.27 (1.19–11.47)[92]
ChilliCapsicum annuum L.10NA13.81 (9.12–18.55)2.18 (1.27–3.50)3.70 (2.94–4.61)
TomatoSolanum lycopersicum13NA14.15 (7.89–20.54)2.39 (0.89–3.70)9.03 (7.67–10.39)
Lady’s fingerAbelmoschus esculentus11NA15.72 (9.88–24.65)2.81 (1.03–4.65)6.64 (2.28–11.84)
CabbageBrassica oleracea13NA22.09 (17.35–26.34)2.05 (1.05–3.10)7.58 (6.10–8.74)
DhakaSurrounding Hazaribagh leather industrial area of Dhaka cityNASpinachSpinacia oleracea40.26±0.2211.48 ± 4.980.32 ± 0.09444.48 ± 12.59[27]
DhakaKawran Bazar (market-based study)NATomatoSolanum lycopersicumNANA0.00–0.0250.00–0.0010.01–0.02[97]
Red amaranthAmaranthus gangeticus L.NANA0.00–0.0440.00–0.001NA
RiceOryza sativa100.00–0.700.00–0.080.003–1.6160.00–0.01
DhakaSurrounding the Turag riverFebruary–March 2010TomatoSolanum lycopersicum60.01 ± 0.000.23 ± 0.050.05 ± 0.011.23 ± 0.32[96]
Bottle gourdLagenaria siceraria60.02 ± 0.000.69 ± 0.150.04 ± 0.010.91 ± 0.24
BrinjalSolanum melongena60.04 ± 0.010.07 ± 0.020.24 ± 0.051.02 ± 0.27
PumpkinCucurbita maxima60.02 ± 0.000.25 ± 0.060.01 ± 0.001.45 ± 0.38
Green amaranthAmaranthus viridis L.60.19 ± 0.040.54 ± 0.560.15 ± 0.032.28 ± 0.60
Red amaranthAmaranthus paniculatus L.60.15 ± 0.031.99 ± 0.440.84 ± 0.172.13 ± 0.56
ChilliCapsicum annuum L.60.01 ± 0.000.17 ± 0.040.33 ± 0.071.23 ± 0.32
BananaMusa sp.60.01 ± 0.000.11 ± 0.020.05 ± 0.011.27 ± 0.34
Whole countryMarketsBrinjalSolanum melongena120.006 ± 0.0010.011 ± 0.0110.041 ± 0.0320.497 ± 0.029[98]
TomatoSolanum lycopersicum120.006 ± 0.0020.005 ± 0.0040.056 ± 0.0040.795 ± 0.059
PotatoSolanum tuberosum120.006 ± 0.0010.007 ± 0.0060.013 ± 0.0070.528 ± 0.051
Green chiliCapsicum annuum120.004 ± 0.0010.006 ± 0.0050.023 ± 0.0110.650 ± 0.039
BeanPhaseolus vulgaris120.018 ± 0.0070.057 ± 0.0500.008 ± 0.0011.110 ± 0.054
BananaMusa acuminata120.003 ± 0.0030.317 ± 0.012
CarrotDaucus carota120.006 ± 0.0010.029 ± 0.0250.023 ± 0.0030.296 ± 0.021
PabnaPakshi (6)NAPotatoSolanum tuberosumNA<0.10.377 ± 0.02<0.1<0.1[37]
Red amaranthAmaranthus cruentusNA<0.11.036 ± 0.01<0.1<0.1
Green amaranthSpinach amaranthNA<0.11.596 ± 0.01<0.1<0.1
CarrotDaucus carotaNA<0.10.304 ± 0.01<0.1<0.1
TomatoSolanum lycopersicumNA<0.10.161 ± 0.01<0.10.75 ± 0.01
CabbageBrassica oleraceaNA<0.10.119 ± 0.01<0.10.495 ± 0.01
BrinjalSolanum melongenaNA<0.10.465 ± 0.01<0.10.436 ± 0.01
BrahmanbariaMatlab (household study) 13AmaranthAmaranthus13 household0.0228 ± 0.0037NA0.033 ± 0.001NA[90]
Bitter gourdMomordica charantia13 household0.0031 ± 0.0026NA0.0211± 0.0005NA
EggplantSolanum melongena13 household0.007 ± 0.003NA0.027± 0.0018NA
ChittagongIndustrial Area (Vatiary)NAWater SpinachIpomoea aquaticaNANA0.73 ± 0.009NA3.21 ± 0.023[93]
Bottle gourdLagenaria sicerariaNANA1.16 ± 0.001NA0.22 ± 0.008
PatuakhaliSurrounding the Paira riverAugust−September 2012TomatoSolanum lycopersicum100.2 ± 0.50.2 ± 0.20.07± 0.070.6 ± 0.2[99]
PotatoSolanum tuberosum100.1 ± 0.070.4 ± 0.70.1± 0.20.7 ± 0.4
Green amaranthAmaranthus hybridus100.2 ± 0.11.2 ± 1.30.3± 0.51.3 ± 0.7
Red amaranthAmaranthus gangeticus L.100.1 ± 0.10.9 ± 0.80.3 ± 0.31.5 ± 1.3
BrinjalSolanum melongena100.04 ± 0.040.3 ± 0.40.1 ± 0.10.8 ± 0.4
Bottle gourdLagenaria siceraria100.8 ± 2.50.4 ± 0.70.1 ± 0.090.7 ± 0.3
ChiliCapsicum annuum L.100.2 ± 0.20.2 ± 0.20.1 ± 0.10.7 ± 0.3
CarrotDaucus carota100.1 ± 0.090.5 ± 0.70.06 ± 0.090.8 ± 0.3
OnionAllium cepa100.1 ± 0.050.4 ± 0.30.2 ± 0.30.8 ± 0.2
BeanPhaseolus vulgaris100.1 ± 0.061.0 ± 1.90.08 ± 0.10.8 ± 0.3
GazipurSurrounding the roadside of JoydebpurDistance from highway 0 mBottle gourdLagenaria sicerariaNA33.43 ± 0.150.18 ± 0.01NA[95]
Distance from highway 100 mBottle gourdLagenaria sicerariaNA32.38 ± 0.130.15 ± 0.02NA
Distance from highway 0 mPumpkinCucurbita maximaNA34.76 ± 1.030.20 ± 0.02NA
Distance from highway 100 mPumpkinCucurbita maximaNA32.13 ± 0.120.18 ± 0.01NA
Standards0.10.10.052.3[91]
Notes: NA, not applicable/reported.

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MDPI and ACS Style

Islam, M.M.; Karim, M.R.; Zheng, X.; Li, X. Heavy Metal and Metalloid Pollution of Soil, Water and Foods in Bangladesh: A Critical Review. Int. J. Environ. Res. Public Health 2018, 15, 2825. https://doi.org/10.3390/ijerph15122825

AMA Style

Islam MM, Karim MR, Zheng X, Li X. Heavy Metal and Metalloid Pollution of Soil, Water and Foods in Bangladesh: A Critical Review. International Journal of Environmental Research and Public Health. 2018; 15(12):2825. https://doi.org/10.3390/ijerph15122825

Chicago/Turabian Style

Islam, M. Mominul, Md. Rezaul Karim, Xin Zheng, and Xiaofang Li. 2018. "Heavy Metal and Metalloid Pollution of Soil, Water and Foods in Bangladesh: A Critical Review" International Journal of Environmental Research and Public Health 15, no. 12: 2825. https://doi.org/10.3390/ijerph15122825

APA Style

Islam, M. M., Karim, M. R., Zheng, X., & Li, X. (2018). Heavy Metal and Metalloid Pollution of Soil, Water and Foods in Bangladesh: A Critical Review. International Journal of Environmental Research and Public Health, 15(12), 2825. https://doi.org/10.3390/ijerph15122825

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