土壤中23种挥发性氯代烃和苯系物的测定

详细信息

收稿日期: 2011-10-31

修回日期: 2011-11-14

刊出日期: 2012-02-29

SIMULTANEOUS DETERMINATION OF 23 VOLATILE CHLORINATED HYDROCARBONS AND BENZENE SERIES IN SOIL SAMPLES

Received Date: 31 October 2011

Revised Date: 14 November 2011

Publish Date: 29 February 2012

摘要: 建立了同时测定土壤中23种挥发性氯代烃和苯系物的吹扫捕集-气相色谱-质谱法.优化了试验条件，标准曲线在0.32×10-9~200.0×10-9范围内呈线性关系，方法检出限（3S/N）为0.077×10-9~0.69×10-9，样品标准添加平均回收率86.5%~117.5%，相对标准偏差（n=7）在1.6%~8.2%之间.
- 氯代烃 /
- 苯系物 /
- 气相色谱-质谱法 /
- 吹扫捕集 /
- 土壤
Abstract: A method for simultaneous determination for 23 volatile chlorinated hydrocarbons and benzene series in soil samples by gas chromatography-mass spectrometry (GC-MS) with purge and trap pretreatment is introduced. The conditions of purge and trap, the qualification of GC-MS, and the centrifuge are confirmed. Under the best conditions, the liner range of the standard curve is 0.32-200.0 μg/kg. The detection limits range of the method for the 23 volatile organic compounds are 0.077-0.69 μg/kg. The average recoveries are 86.5% to 117.5%, with precision of 1.6%-8.2% (n=7). This fast and accurate method can be applied to determinate the 23 volatile organic compounds in batch soil samples with satisfactory results.
- chlorinated hydrocarbons /
- benzene series /
- gas chromatography-mass spectrometry /
- purge and trap /
- soil