Methods: The testing results of arsenic and mercury in water were analyzed by using "Z-score" statistical method which is for international purpose.
2
本文就砷、汞两种重金属对食品的污染及其来源，对人体的危害及检测方法进行介绍和了解。
This paper arsenic and mercury two heavy metal pollution and its source of food, for the harm to human body and detection method is introduced and understanding.
3
方法：对2009年送检的751件化妆品中铅、汞、砷检测结果进行统计分析。
Methods: The test results of lead, mercury and arsenic in 751 cosmetic samples in 2009 were statistically analyzed.
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