Rice is the major staple food for Bangladeshi people for which it is urgent to determine the metal nutritional status as well toxicity of rice available in the local market. Therefore, the content of trace elements and heavy metals such as; Copper (Cu), Zinc (Zn), Iron (Fe), Nickel (Ni), Cobalt (Co), Cadmium (Cd) and Lead (Pb) were analyzed in rice samples purchased from the major markets in Dhaka City using Atomic Absorption Flame Spectrometry (AAFS). Microwave assisted digestion method was used for sample preparation to determine trace and heavy metals. The metals detected in rice samples ranged from 0.5 to 3.5 mg/kg of Cu, 3.63 to 82.38 mg/kg of Zn, 1.13 to 14.38 mg/kg of Fe 1.63 to 12.50 mg/kg of Mn, and 0 to 2.0 mg/kg of Ni. Whereas, the concentration of Pb and Cd were within < 0.05mg/Kg. Overall, the present study reveals that the levels of the trace elements were generally below permissible limits. However, Fe was found to be higher in some samples. Thus it is apparent that the metal concentration in rice of Dhaka is within the safety limit of consumption.
Processed Rice, Heavy Metals, Trace Elements, Dhaka City and AAFS
- Cao, H., J. Chen, J. Zhang, H. Zhang, L. Qiao and Men, Y. (2010). Heavy metals in rice and garden vegetables and their potential health risks to inhabitants in the vicinity of an industrial zone in Jiangsu, China Journal of Environmental Science, 22 (11): 1792-1799.
- Emumejaye, K. (2014). Heavy and trace elements in some brands of rice consumed in Delta State, Nigeria. IOSR Journal of Applied Physics, 6 (2): 1-5.
- Huang, S.S., Liao, Q.L., Hua, M., Wu, X.M., Bi, K.S., Yan, C.Y., Chen, B. and Zhang, X.Y. (2007). Survey of heavy metal pollution and assessment of agricultural soil in Yangzhong district, Jiang SuProvince, China. Chemosphere, 67: 2148-2155.
- Jianjie F., Qunfang, Z., Jiemin, L., Wei, L., Thanh, W., Qinghua, Z. and Guibin, J. (2008). High levels of heavy metals in rice (Oryza sativa L.) from a typical E-waste recycling area in southeast China and its potential risk to human health. Chemosphere, 71:1269- 1275.
- Khairiah, J., Ramlee, A.R., Jamil, H., Ismail, Z. and Ismail, B.S. (2013). Heavy Metal Content of Paddy Plants in Langkawi, Kedah, Malaysia. Australian Journal of Basic Applied Science, 7 (2): 123-127.
- Liu, J., Zhang, X., Tran, H., Wang, D. and Zhu, Y. (2011). Heavy metal contamination and risk assessment in water, paddy soil, and rice around an electroplating plant. Environmental Science and Pollution, 18 (9): 1623-1632.
- Machiwa, J. F. (2010). Heavy metal level in paddy soils and rice (Oryza Sativa (L)) from wetlands of lake Victoria Basin, Tanzania. Tanzania Journal of Science, 36: 59-72.
- Otitoju, O., Akpanabiatu, M. I., Otitoju, G. T. O., Ndem, J. I. and Uwah, A. F. (2012). Heavy metal contamination of green leafy vegetable garden in Itam road construction site in Uyo, Nigeria. Research journal of environmental and earth sciences, 4 (4): 371-375.
- Rivero-Huguet, M., Huertas, R., Francini, L., Vila, L. and Daree, E. (2006). Concentrations of As, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, Pb and Zn in Uruguayan rice determined by Atomic Absorption Spectrometry. Atomic Spectroscopy. 27 (2): 51-59.
- Satpathy, D., Reddy, M. V. and Dhal, S. P. (2014). Risk assessment of heavy metals contaminations in paddy soil, plants and grains (Oryza SativaL.) at the East Coast of India. Biomed Research International, 2014. Article ID 545473, 11 pages.
- Sayed, M.S., Sultana, G.N.N, Shabnam, L. and Khan, A. H. (2009). Status of some essential and toxic elements in different varieties of market rice in Bangladesh. Dhaka University Journal of Science, 57 (1): 93-96.
- Web-1: https://well.blogs.nytimes.com/2012/08/13/a-host-of-ills-when-irons-out-of-balance/
- Web-2: https://www.thedailystar.net/supplements/25th-anniversary-special-part-4/nutritional-security-through-bio-fortified-zinc-rice
- Yoon, K. P. (2003). Construction and characterization of multiple heavy metal-resistant Phenol-degrading pseudomonads strains. Journal of Microbiology and Biotechnology, 13 (6): 1001-1007.
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