Heavy Metals Contamination in Agricultural Soil and Rice in Tanzania: A Review
International Journal of Environmental Protection and Policy
Volume 4, Issue 1, January 2016, Pages: 16-23
Received: Jan. 15, 2016; Accepted: Jan. 28, 2016; Published: Feb. 17, 2016
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Authors
Fides Simon, Department of Water, Environmental Science and Engineering (WESE), Nelson Mandela – African Institution of Science and Technology, Arusha, Tanzania
Kelvin Mark Mtei, Department of Water, Environmental Science and Engineering (WESE), Nelson Mandela – African Institution of Science and Technology, Arusha, Tanzania
Martin Kimanya, Department of Food Biotechnology and Nutritional Sciences, Nelson Mandela – African Institution of Science and Technology, Arusha, Tanzania
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Abstract
Heavy metals contamination in agricultural soil is a potential environmental threat to the safety of agricultural food crops such as rice which is consumed by majority of Tanzanians. The aim of this review is to put together available information on sources of heavy metals, their extent of contamination in agricultural soil and in rice, the risk of exposure through rice consumption as well as the relationship between heavy metals contamination in agricultural soils and in rice in Tanzania. There are several methods of determining the concentrations of heavy metals in soils and in rice. These include Inductively Coupled Plasma Mass Spectrometer (ICP – MS) and Energy Dispersive X – ray Fluorescence spectrometer (EDXRF). It has been mostly reported that the extent of heavy metals contamination in agricultural soils is influenced by their closeness to mining or industrial areas. The use of river waters in mining areas or wastewater from industries for irrigation has been associated to increasing levels of heavy metals in agricultural soils. The elevated level of heavy metals in agricultural soils leads to their accumulation in crops especially rice which upon consumption poses health effects to human and the ecosystem at large. This review suggests the need for determining the extent of heavy metals contamination in agricultural soils around potential areas such as mining and to link this with exposure assessment on heavy metals through rice consumption in Tanzania. This information is necessary to establish the extent at which rice consumers in Tanzania are at risk of heavy metals exposure.
Keywords
Mining, Contaminated Rice, Exposure Assessment, Industrial Wastes
To cite this article
Fides Simon, Kelvin Mark Mtei, Martin Kimanya, Heavy Metals Contamination in Agricultural Soil and Rice in Tanzania: A Review, International Journal of Environmental Protection and Policy. Vol. 4, No. 1, 2016, pp. 16-23. doi: 10.11648/j.ijepp.20160401.13
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Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
References
[1]
J. F. Machiwa, “Heavy metal levels in paddy soils and rice (Oryza sativa (L)) from wetlands of Lake Victoria Basin, Tanzania”, Tanz. J. Sci., vol. 36, pp. 59–72, 2010.
[2]
R. A. Aziz, S. A. Rahim, I. Sahid, W. M. R. Idris, and A. R. Bhuiyan, “Determination of heavy metals uptake in soil and paddy plants,” American-Eurasian J. Agric. Environ. Sci., vol. 15, pp. 161-164, 2015.
[3]
D. Satpathy, M. V. Reddy, and S. P. Dhal, “Risk Assessment of Heavy Metals Contamination in Paddy Soil, Plants, and Grains (Oryza sativa L.) at the East Coast of India,” BioMed Res. Int., vol. 2014, pp. 1–11, 2014.
[4]
G. U. Chibuike and S. C. Obiora, “Heavy metal polluted soils: Effect on plants and bioremediation methods”, Appl. Environ. Soil Sci., vol. 2014, pp. 1–12, 2014.
[5]
J. C. Nnaji and O. U. Igwe, “Fractionation of heavy metals in soil samples from rice fields in New Bussa, Nigeria,” Int. J. Chem. Tech. Res., vol. 6 14, pp. 5544-5553, 2014.
[6]
W. Ji, Z. Chen, D. Li, and W. Ni, “Identifying the criteria of cadmium pollution in paddy soils based on a field survey,” Energy Procedia, vol. 16, pp. 27–31, 2012.
[7]
K. Zhao, W. Fu, Z. Ye, and C. Zhang, “Contamination and spatial variation of heavy metals in the soil-rice system in Nanxun County, Southeastern China,” Int. J. Environ. Res. Public Health, vol. 12, pp. 1577-1594, 2015.
[8]
K. Emumejaye, “Heavy and trace elements in some brands of rice consumed in delta state, Nigeria,” IOSR J. Appl. Phys., vol. 6, pp. 1-5, 2014.
[9]
F. Fernández-Luqueño, F. López-Valdez, P. Gamero-Melo, S. Luna- Suárez, E. N. Aguilera-González, A. I. Martínez, M. García- Guillermo, G. Hernández-Martínez, R. Herrera-Mendoza, M. A. Álvarez- Garza, and I. R. Pérez-Velázquez, “Heavy metal pollution in drinking water - a global risk for human health: A review,” Afr. J. Environ. Sci. Technol., vol. 7, pp. 567-584, 2013.
[10]
C. Vanita, C. Piar, N. Avinash, K. J. Kaur, and B. Y. Pakade, “Evaluation of heavy metals and its genotoxicity in Agricultural soil of Amritsar, Punjab, India,” Int. J. Res. of Chem. Environ., vol. 4, pp. 20-28, 2014.
[11]
P. Zhuang, B. Zou, N. Y. Li, and Z. A. Li, “Heavy metal contamination in soils and food crops around Dabaoshan mine in Guangdong, China: implication for human health,” Environ. Geochem. Health, vol. 31, pp. 707–715, 2009.
[12]
National Food Safety Standard, “Maximum levels of contaminants in food,” Ministry of health of the people’s Republic of China, GB 2762 – 2012.
[13]
C. O. Matthews – Amune and S. Kakulu, “Impact of mining and agriculture on heavy metal levels in environmental samples in Okehi local government area of Kogi State,” Int. J. Pure Appl. Sci. Technol., vol. 12, pp. 66-77, 2012.
[14]
C. Su, L. Jiang, and W. Zhang, “A review on heavy metal contamination in the soil worldwide: Situation, impact and remediation techniques,” Environ. Skeptics Critics, vol. 3, pp. 24-38, 2014.
[15]
D. Kibassa, A. A. Kimaro, and R. S. Shemdoe, “Heavy metals concentrations in selected areas used for urban agriculture in Dar es Salaam, Tanzania,” Sci. Res. Essays, vol. 8, pp. 1296-1303, 2013.
[16]
H. E. Lugwisha, and O. C. Othman, “Levels of selected heavy metals in soil, tomatoes and selected vegetables from Lushoto district-Tanzania,” Int. J. Environ. Monit. Anal., vol. 2, pp. 313-319, 2014.
[17]
Tanzania Bureau of Standards, “Soil quality - Limits for soil contaminants in habitat and agriculture,” TZS 972: 2007, 2007.
[18]
M. Puschenreiter, O. Horak, W. Fries, and W. Hart, “Low-cost agricultural measures to reduce heavy metal transfer into the food chain – a review,” Plant Soil Environ., vol. 51, pp. 1–11, 2005.
[19]
M. Chen, L. Q. Ma, and W. G. Harris, “Arsenic concentrations in Florida surface soils: Influence of soil type and properties,” Soil Sci. Soc. Am. J., vol. 66, pp. 632–640, 2002.
[20]
J. F. Machiwa, “Concentration of heavy metals in river sediment and wetland vegetation in mining sites, Lake Victoria Basin, Tanzania,” Tanz. J. Sci., vol. 29, pp. 81–87, 2003.
[21]
C. Tungaraza, R. T. Chibunda, and A. E. Pereka, “Dietary exposure to mercury of the adult population in Mugusu artisanal gold mining village, Tanzania: A total diet approach,” Open Environ. Eng. J., vol. 4, pp. 141-146, 2011.
[22]
A. G. N. Kitula, “The environmental and socio-economic impacts of mining on local livelihoods in Tanzania: A case study of Geita district,” J. Cleaner Prod., vol. 14, pp. 405–414, 2006.
[23]
P. Yang, M. Yang, R. Mao, and H. Shao, “Multivariate statistical assessment of heavy metals for agricultural soils in Northern China,” Sci. World J., vol. 2014, pp. 1-7, 2014.
[24]
J. Escarré, C. Lefèbvre, S. Raboyeau, A. Dossantos, G. Wolf, J. C. C. Marel, H. Frérot, N. Noret, S. Mahieu, C. Collin, and F. van Oort, ”Heavy metal concentration survey in soils and plants of the Les Malines Mining District (Southern France): Implications for soil restoration,” Water Air Soil Pollut., vol. 216, pp. 485–504, 2011.
[25]
J. O. Duruibe, M. O. C. Ogwuegbu, and J. N. Egwurugwu, “Heavy metal pollution and human biotoxic effects,” Int. J. Phys. Sci., vol. 2, pp. 112-118, 2007.
[26]
H. Hu, Q. Jin and P. Kavan, “Astudy of heavy metals pollution in China: Current status, pollution – control policies and countermeasures,” Sustainability, vol. 6, pp. 5820–5838, 2004.
[27]
C. Anyakora, T. Ehianeta, and O. Umukoro, “Heavy metal levels in soil samples from highly industrialized Lagos environment,” Afr. J. Environ. Sci. Technol., vol. 7, pp. 917-924, 2013.
[28]
J. Deka and H. P. Sarma, “Heavy metal contamination in soil in an industrial zone and its relation with some soil properties,” Arch. Appl. Sci. Res., vol. 4, pp. 831-836, 2012.
[29]
B. Wei and L. Yang, “A review of heavy metal contaminations in urban soils, urban road dusts and agricultural soils from China,” Microchem. J., vol. 94, pp. 99–107, 2010.
[30]
M. W. Lema, J. N. Ijumba, K. N. Njau, and P. A. Ndakidemi, “Environmental contamination by radionuclides and heavy metals through the application of phosphate rocks during farming and mathematical modeling of their impacts to the ecosystem,” Int. J. Eng. Res. Gen. Sci., vol. 2, pp. 852-863, 2014.
[31]
H. B. Malidareh, A. H. Mahvi, M. Yunesian, M. Alimohammadi, and S. Nazmara, “Admium, lead and arsenic content in polished white rice (Oryza sativa L.) In Ghaemshahr city (North of Iran),” Middle-East J. Sci. Res, vol. 20, pp. 1709-1714, 2014.
[32]
Tanzania Bureau of Standards, “Limits for municipal and industrial wastewaters,” TZS 860: 2005, 2005.
[33]
D. M. Pallangyo, “Environmental law in Tanzania; how far have we gone?” LEAD J., vol. 3/1, pp. 1–26, 2007.
[34]
J. Barreiro-Hurle, Analysis of incentives and disincentives for rice in the United Republic of Tanzania. Technical Notes Series, MAFAP, FAO, Rome, October 2012.
[35]
Food and Agriculture Organization of United Nations, “Tanzania BEFS Country Brief,” 2013. [Online] Available at: [Accessed January 01, 2016].
[36]
L. C. Smith, and A. Subandoro, Measuring food security using household expenditure surveys. Food security in practice technical guide series, International Food Policy Research Institute., Washington, D. C., 2007, pp. 94-96.
[37]
M. A. Shabbir, F. M. Anjum, M. R. Khan, M. Nadeem, and M. Saeed, “Assessment of heavy metals and aflatoxin levels in export quality Indica rice cultivars with different milling fractions,” Afr. J. Agric. Res., vol. 8, pp. 3236–3244, 2013.
[38]
M. Nagarajan, and K. S. Ganesh, “Effect of chromium on growth, biochemicals and nutrient accumulation of paddy (Oryza sativa L.),” Int. Lett. Nat. Sci., vol. 23, pp. 63-71, 2014.
[39]
C. Payus, and A. F. A. Talip, “Assessment of heavy metals accumulation in paddy rice (Oryza sativa),” Afr. J. Agric. Res., vol. 9, pp. 3082-3090, 2014.
[40]
L. Jia, W. Wang, Y. Li, and L. Yang, “Heavy metals in soil and crops of an intensively farmed area: A case study in Yucheng city, Shandong Prrovince, China,” Int. J. Environ. Res. Republic Health, vol. 7, pp. 395-412, 2010.
[41]
P. Li, X. Feng, G. Qiu, L. Shang, and S. Wang, “Mercury exposure in the population from Wuchuan mercury mining area, Guizhou, China,” Science of the Total Environment, vol. 395, pp. 72–79, 2008.
[42]
C. G. Lee, H. Chon, and M. C. Jung, “Heavy metal contamination in the vicinity of the Daduk Au – Ag – Pb – Zn mine in Korea,” Appl. Geochem., vol. 16, pp. 1377–1386, 2001.
[43]
M. H. Makene, J. Emel, and J. T. Murphy, “Calling for Justice in the Goldfields of Tanzania,” Resour., vol. 1, 3-22, 2012.
[44]
Y. Guan, C. Shao, and M. Ju, “Heavy metal contamination assessment and partition for industrial and mining gathering areas.” Int. J. Environ. Res. Public Health, vol. 11, pp. 7286-7303, 2014.
[45]
Codex Alimentarius Commission, “Joint FAO/WHO Food Standards Programme Codex Alimentarius Commission. Report of the eighth session of the Codex Committee on contaminants in foods,” The Hague, The Netherlands, 31 March–4 April, 2014.
[46]
Codex Alimentarius Commission, “Joint FAO/WHO Food Standards Programme Codex Alimentarius Commission. Report of the sixth session of the Codex Committee on contaminantsin foods,” Maastricht, Netherlands, 26–30 March, 2012.
[47]
M. Dumitru, D. M. Motelică, N. Vrînceanu, S. Dumitru, and A. Vrînceanu, “Effects of long-term industrial pollution on heavy metals accumulation in soils and maize crops on Târnava Mare river bottomland,” Acta Metallomica – MEEMB, vol. 11, pp. 35–42, 2014.
[48]
J. J. Mghase, H. Shiwachi, K. Nakasone, and H. Takahashi, “Agronomic and socio-economic constraints to high yield of upland rice in Tanzania,” Afr. J. Agric. Res., Vol. 5, pp. 150-158, 2010.
[49]
Joint FAO/WHO Expert Committee on Food Additives, “Joint FAO/WHO Expert Committee on Food Additives Summary and Conclusion from the seventy-second meeting,” Rome, 16 - 25 February, 2010.
[50]
Joint FAO/WHO, “Joint FAO/WHO Food Standards Programe Codex Committee on contaminants in food. Working document for information and use in discussions related to contaminants and toxins in the GSCTFF Eighth Session,” Hague, Netherlands, 31 March–4 April, 2014.
[51]
M. Naseri, Z. Rahmanikhah, V. Beiygloo, and S. Ranjbar, “Effects of two cooking methods on the concentrations of some heavy metals (cadmium, lead, chromium, nickel and cobalt) in some rice brands available in Iranian market,” J. Chem. Health Risks, vol. 4, pp. 65–72, 2014.
[52]
P. Ziarati and N. Azizi, “Consequences of cooking method in essential and heavy metal contents in brown and polished alikazemi rice,” Int. J. Plant Anim. Environ. Sci., vol. 4, pp. 280-287, 2014.
[53]
A. Moradi, N. Honarjoo, J. Fallahzade, and P. Najafi, “Assessment of heavy metal pollution in soils and crops of industrial sites, Isfahani,” Iran. Pak. J. Biol. Sci., vol. 16, pp. 97-100, 2013.
[54]
Z. Liu, Q. Zhang, T. Han, Y. Ding, J. Sun, F. Wang, and C. Zhu, “Heavy metal pollution in a soil-rice system in the Yangtze river region of China,” Int. J. Environ. Res. Public Health, vol. 13, pp. 1–16, 2016.
[55]
A. Chanda, A. Akhand, A. Das, and S. Hazra, “Cr, Pb and Hg contamination on agricultural soil and paddy grain after irrigation using metropolitan sewage effluent,” J. Appl. Environ. Biol. Sci., vol. 1, pp. 464-469, 2011.
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