Journal
FOOD AND CHEMICAL TOXICOLOGY
Volume 58, Issue -, Pages 449-458Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2013.05.014
Keywords
Agricultural crops; Daily intake; Heavy metals; Health risk; Pakistan
Categories
Funding
- Chinese Academy of Sciences (CAS)
- Academy of Sciences for the Developing World (TWAS) [3240255020]
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This study assessed the concentrations of heavy metals such as cadmium (Cd), chromium (Cr), copper (Cu), manganese (Mn), nickel (Ni) and zinc (Zn) in agricultural soils and crops (fruits, grains and vegetable) and their possible human health risk in Swat District, northern Pakistan. Cd concentration was found higher than the limit (0.05 mg/kg) set by world health organization in 95% fruit and 100% vegetable samples. Moreover, the concentrations of Cr, Cu, Mn, Ni and Zn in the soils were shown significant correlations with those in the crops. The metal transfer factor (MTF) was found highest for Cd followed by Cr > Ni > Zn > Cu > Mn, while the health risk assessment revealed that there was no health risk for most of the heavy metals except Cd, which showed a high level of health risk index (HRI >= 10E-1) that would pose a potential health risk to the consumers. (C) 2013 Elsevier Ltd. All rights reserved.
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