不同红外分光法对水中污染油分析的研究

The Study on Analysis of Oil in Water by Various Infrared Measures

采用两种不同的红外光度法(分散红外分光光度法和非分散红外光度法)对不同组成的矿物油进行了比较测定,结果表明:当矿物油中的芳烃含量与“标准油”中芳烃含量相近时,两种方法分析结果基本一致;当矿物油中芳烃含量较高时,非分散红外光度法测定结果明显偏低;当样品中芳香烃含量与“标准油”中的芳香烃含量相差较大时,采用分散红外光度法,可以获得更准确、可靠的结果。研究结果还表明,随着测试样品中芳烃含量的增加(>50%),分散红外光度法也会出现较大的偏差。

Two different infrared measures, distract infrared measure and non-infrared measure, are adopted to measure mineral oil of various composition for comparison. The result shows that if aromatic content of mineral oil is similar with that of standardized oil, the results of two measurements is almost the same; if aromatic content of mineral oil is high, measured value by non-distract infrared measure is lower obviously,if aromatic content of sample is different from that of standardized oil significantly, the result by distract infrared measure is more accurate and reliable. The study shows that along with the increase of aromatic content of sample by more than 50%, deviation by distract infrared measure will be enlarged.