土壤中23种挥发性氯代烃和苯系物的测定  

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

作　　者：李丽君[1] 何炼[1] 边景辉 孙宁[2] 

机构地区：[1]沈阳地质矿产研究所,辽宁沈阳110032 [2]沈阳化工股份有限公司,辽宁沈阳110026

出　　处：《地质与资源》2012年第1期151-155,共5页Geology and Resources

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.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 Ixg/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.

关 键 词：氯代烃 苯系物 气相色谱-质谱法 吹扫捕集 土壤 

分 类 号：S151.9[农业科学—土壤学]