...场的5种海水与2种淡水贝类部分元素含量进行检测,采用单因子污染指数(只)对元素含量进行污染评价,采用重金属污染指数(XMPI)比较不同贝类元素含量的差异,结合相关标准和研究资料对北京市场贝类食用安全性进行评价。
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依据单项污染指数法和内梅罗综合污染指数法来评价土壤重金属污染程度。
By adopting both the single factor index method and Nemerow multi-factor index method, the pollution indices were calculated to assess pollution extent.
结果表明,以单因子污染指数评价,在118个表层土壤样品中,有42个样品的重金属含量超标,超标率为35.6%。
Among the 118 surface soil samples, 42(corresponding to 35.6%) were above the national standards when evaluated with single factor index method.
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