新乡市卫河两岸蔬菜中重金属含量及污染评价

目的]研究新乡市卫河沿岸蔬菜内重金属含量及污染现状。方法]以人们广泛种植的菠菜和油麦菜为研究对象，每种植物选取了5个地块，每个地块按照梅花形布点法，选取5个样品组成混合样品，测定其中的Pb、Cd、Cu、Zn含量并采用单因子污染指数法进行评价。结果]菠菜和油麦菜中的4种重金属含量均超过了国家食品卫生标准。菠菜主要受到Pb、Cd、Cu的污染，油麦菜主要受到Pb、Cd的污染。两种蔬菜受Pb、Cd、Cu的污染属于重度污染，受Zn的污染相对轻一些。结论]菠菜和油麦莱中的重金属含量与人们用污染的河水灌溉有关。

Heavy Metals Content in Vegetables on the Two Banks of Weihe River in Xinxiang City and Its Pollution Evaluation

Objective] The research aimed to study vegetables along Weihe River in Xinxiang contaminated with heavy metals content and the pollution status.Method] The widely-planted vegetable spinach and Lactuca sativa were selected as the research objects.Five different plots were chosen for each plant and five samples were selected in each plot by using plum-shaped arrangement method to form the mixed samples.The contents of Pb,Cd,Cu,Zn were determined and evaluated by single-factor pollution index method.Result]...