Sharma Rajesh Kumar, Agrawal Madhoolika, Marshall Fiona M
Ecology Research Laboratory, Department of Botany, Banaras Hindu University, Varanasi 221005, India.
Environ Pollut. 2008 Jul;154(2):254-63. doi: 10.1016/j.envpol.2007.10.010. Epub 2007 Nov 26.
The contributions of heavy metals in selected vegetables through atmospheric deposition were quantified in an urban area of India. Deposition rate of Zn was recorded maximum followed by Cu, Cd and Pb. The concentrations of Zn and Cu were highest in Brassica oleracea, Cd in Abelmoschus esculentus and B. oleracea, while Pb was highest in Beta vulgaris. Heavy metal pollution index showed that B. oleracea was maximally contaminated with heavy metals followed by A. esculentus and then B. vulgaris. The results of washing showed that atmospheric deposition has contributed to the increased levels of heavy metals in vegetables. Both Cu and Cd posed health risk to local population via test vegetables consumption, whereas Pb posed the same only through B. oleracea. The study concludes that atmospheric depositions can elevate the levels of heavy metals in vegetables during marketing having potential health hazards to consumers.
在印度的一个城市地区，对通过大气沉降进入特定蔬菜中的重金属含量进行了量化。锌的沉降速率记录最高，其次是铜、镉和铅。甘蓝中锌和铜的含量最高，秋葵和甘蓝中镉含量最高，而甜菜中铅含量最高。重金属污染指数表明，甘蓝受重金属污染最严重，其次是秋葵，然后是甜菜。清洗结果表明，大气沉降导致了蔬菜中重金属含量的增加。铜和镉通过食用受试蔬菜对当地居民构成健康风险，而铅仅通过甘蓝对居民构成健康风险。该研究得出结论，大气沉降会在蔬菜销售期间提高其重金属含量，对消费者存在潜在健康危害。
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