It was to test the effects of mercury on the heart that the two new studies compared the mercury levels in clippings from toenails, where heavy metals tend to be deposited.

脚趾甲是重金属最易于沉积的地方。这两个新课题通过对比脚趾甲中汞的含量的多少，目的在于检测汞对心脏的影响。

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Pharmacopeia method was used in water soluble extractives and limit test for heavy metals and total ash and acid-insoluble ash to test the quality in Lumbricus from different origin.

采用药典方法分别测定浸出物、总灰分和酸不溶性灰分和进行重金属检查，综合考察不同产地地龙的内在质量。

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How much of the lead standard solution should be taken for the limit test for heavy metals in this experiment?

试计算葡萄糖重金属检查中标准铅溶液的取用量。

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The staff there performed a "challenge test" to see if Stemp's urine was positive for heavy metals.

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