Determination of 11 Semi-volatile Organic Compounds from Soil by Magnetic Netic Stirring
11 semi-volatile organic compounds in soil by magnetic stirring method were determined.20.0 g prepared soil samples were weaghted,with(1+1)chloride-acetone mixture as extraction agent,keeping the magnetic speed speed for high speed,extracted for 30 min in 45 ℃,drying by anhydrous sodium sulfate,concentrated,by high throughput vacuum parallel concentration instrument purified to 1.0 mL by florida silicon soil solid phase extraction column,11 kinds of semi-volatile organic compounds in soil were analyzed by gas chromatography-mass spectrometer,and determined by internal standard.The correlation coefficients between 11 semi-volatile compounds concentrations range of 1.0 to 40 mg/L were greater than or equal to 0.994,the detection limit was in the range of 0.05 to 0.1 mg/kg,The lower measurement limit was in the range of 0.2 to 0.4 mg/kg,55.7％to 106％,the relative standard deviation was in the range of 0.8％to 12％,and the detection limit was in the range of 0.04 to 0.4 mg/kg,lower measurement limit was in the range of 0.16 to 1.6 mg/kg,47％to 119％,relative standard deviation was in the range of 2.9％to 44％.Compared to the detection limit,lower measurement limit,spiking recovery rate,the relative standard deviation all meet the requirements.
magnetic speed speedextraction temperatureextraction timeextraction efficiencysoil11 kinds of semi-volatile organic compounds
万方数据
维普
