| 四氢呋喃比浊法测定土壤中的微量油 |
| 摘要点击 790 全文点击 1028 投稿时间：1987-07-17 |
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| 英文关键词 |
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| 中文摘要 |
| 近代石油工业对环境的影响引起人们的重视。土壤被油污染导致农业减产亦已引起人们的关注[1]。然而,迄今土壤中微量油的测定尚无令人满意的方法[2]。已有的方法大多通过氯仿等有机溶剂抽提,而后用重量法或红外法等测定。我们研究用四氢呋喃抽提,然后用比浊法测定,由于四氢呋喃溶油能力,可缩短抽提时间。 |
| 英文摘要 |
| In this report, the authors intended to find out a method for determining a small amount of crude oil in soil. First oil is extracted from soil by tetrahydrofuran, then subjected to centrifugal settling. And the supernatant is pipetted for determining the content of crude oil by turbidimetry.The method is limited to an amount of oil 0.025mg in a 10g sample. It gives extraction yield about 98%. Compared with the gravimetric analysis, the method is simple and speedy with high yield. The determination of a sample shows that standard deviation of the method is 0.036 and coefficient variation 0.035. Therefore it can be satisfactory to determine a small amount of crude oil containing in soil. |
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