The Oil Contaminant Analyzes Method Study In The Soil

Soil environmental risks of oil and its control technology is that many oil fields are carrying out research in these studies is a prerequisite for oil to be on the content of the soil quantitative or qualitative analysis. In China's soil environmental quality standards on the monitoring of petroleum in soil lack of uniform standards of evaluation and analysis, to the relevant research work has brought a lot of inconvenience. The environmental monitoring stations currently used detection methods or the use of chloroform extraction constant weight extracts were separated after the IR and UV analysis. This method of long and complicated operations, chloroform greater environmental pollution, the final determination of the results of the total soil organic matter, can not reflect the characteristics of the process of petroleum exploration and development of oil pollutants in the real content. Therefore, an urgent need to study for environmental monitoring stations Zhongyuan oilfield and my oil in the soil monitoring methods.Based on the domestic and international petroleum in soil sample analysis and the determination of the most common methods of soil analysis and comparison of pre-treatment, the choice of the ultrasonic cleaning of oil in soil as measured before the treatment. The soil pre-treatment method to save solvent, treatment time is short, recovery good effect. Determined according to standard GB/T16488-1996 petroleum in soil monitoring methods for the infrared method. And the experimental conditions affect the results were compared to determine one by one. Experimental procedures finalized.Obtained under the experimental detection limit of this method is 0.10mg/kg, fully meet the laboratory requirement. Measured using the standard solution of the infrared instrument for the standard oil coefficient of determination of calibration and standard curve correlation coefficient of 0.9999, fully consistent with laboratory quality control requirements. The recoveries between 84.0%-94.9%, the relative standard deviation of 2.9%-6.8%, and can guarantee that the method of determination of petroleum in soil. This method the actual area of the oil samples were tested, the results were consistent Pollution of oil region, proved that the method can be used as soil samples in the actual determination of oil.