作者
Rajesh Kumar Sharma, Madhoolika Agrawal, Fiona Marshall
发表日期
2007/2/1
期刊
Ecotoxicology and environmental safety
卷号
66
期号
2
页码范围
258-266
出版商
Academic Press
简介
Heavy metal contamination of soil resulting from wastewater irrigation is a cause of serious concern due to the potential health impacts of consuming contaminated produce. In this study an assessment is made of the impact of wastewater irrigation on heavy metal contamination of Beta vulgaris (palak); this is a highly nutritious leafy vegetable that is widely cultivated and consumed in urban India, particularly by the poor. A field study was conducted at three major sites that were irrigated by either treated or untreated wastewater in the suburban areas of Varanasi, India according to normal practice. Samples of irrigation water, soil, and the edible portion of the palak (Beta vulgaris L. var All green H1) were collected monthly during the summer and winter seasons and were analyzed for Cd, Cu, Zn, Pb, Cr, Mn, and Ni. Heavy metals in irrigation water were below the internationally recommended (WHO) maximum …
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RK Sharma, M Agrawal, F Marshall - Ecotoxicology and environmental safety, 2007