超声-重量法测定不同土壤粒级石油回收率研究

介绍了利用超声波的技术，结合重量法，来测量土壤中石油的含量。主要测量了超声时间、土壤粒径、温度、萃取剂、石油浓度对土壤中石油回收率的影响。经过实验，提取时间达到15min时，土壤粒径在1～2mm时、超声温度为23～40℃时，以三氯甲烷萃取时，石油的回收率最高。同时，回收率随着石油浓度的升高而略有提高。

Research on the Extractive Ratio of Oil in Different Diameter Soil Mensurated by Measure of Ultrasonic and Weight

Ratio of oil was extractived mostly used the technique of ultrasonic and mensurated by the measure of weight. The factors influence the extractive ratio of oil were mainly measured, which were the time of ultrasonic, the diameter of oil, temperature, impregnant and consistency. According to the experiments, when the time was 15 minutes, the diameter of oil was 1 - 2 millimetre, the temperature was 23 - 40 ℃, and the impregnant was chloroform, the extractive ratio of oil was best of all. Meanwhile, the extractive ratio was growing up as the consistency of oil rises.