提出了第二年生草土壤的矿物油临界含量。

The critical content of mineral oils in soil was presented for second-year-old Reed canary grass.

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快速准确地测定水中矿物油的种类及含量，正确判断油污染的性质和来源，对于实施水环境监测管理及污染防治具有重要意义。

Identifying the species of mineral oil in water and measuring its concentration are needed to determine the contamination oil source and evaluating pollution fast and correctly.

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介绍了用重量法测定油砂中矿物油含量的方法，并且对测定的两个关键步骤即油砂中油的萃取以及矿物油的分离进行了重点讨论。

The method of determining the mineral oil content in the oil sand with weight was recommended. As two committed steps, extraction and separation of mineral oil were discussed.

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