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本文提出用活性碳管吸附、以二硫化碳溶剂解吸、气相色谱氢火焰离子化检测器分析测定干洗场所空气中三氯乙烯 (TCE)、四氯乙烯 (PCE) ,色谱条件 :色谱柱长 2米、内径 3mm不锈钢柱 ,填充聚乙二醇6 0 0 0∶6 2 0 1红色担体 (6 0— 80目 ) =5∶10 0 ,柱温 96℃ ,气化室 170℃ ,氢火焰离子化检测器 170℃ ,载气流量N2 2 0ml/min ,线性范围TCE 0 .10— 0 .6 0mg/ml,PCE 0 .10— 2 .0 0mg/ml,相关系数 0 .9995— 0 .9997,检出限TCE 0 .14ug/ml,PCE 1.4ug/ml,方法的精密度TCE 2 0、10 0、2 0 0ug/ml标准溶液分析 ,变异系数分别为1.2 9%、2 .6 2 %、1.2 2 % ,PCE 14、15 5、2 90mg/L标准溶液分析 ,变异系数分别为 3 .76 %、1.82 %、1.6 8% ,稳定性PCETCE在活性碳管中 7天内稳定 ,变异系数 0 .6 5— 3.2 1% ,回收率 91.0— 10 8.4% ,二硫化碳对TCEPCE的解吸效率 91.12— 10 6 .1% ,测定中与PCETCE共存物质二氯甲烷、三氯甲烷、苯、甲苯不干扰目标组分测定。方法适用于日常卫生监督监测工作 ,可同时测定作业场所空气中三氯乙烯、四氯乙烯
In this paper, Trichlorethylene (TCE) and tetrachlorethylene (PCE) in the air of dry-cleaning place were determined by activated carbon tube adsorption, desorption with carbon disulfide solvent and gas chromatography with flame ionization detector. The chromatographic conditions were as follows: Diameter 3mm stainless steel column, filled with polyethylene glycol 600 0: 6 2 0 1 red body (60-80 mesh) = 5: 100, column temperature 96 ℃, gasification chamber 170 ℃, hydrogen flame ionization detection 170 ° C, carrier gas flow N2 2 0ml / min, linear range TCE 0 .10-0 .6 0mg / ml, PCE 0 .10-2 .0 0mg / ml, correlation coefficient 0.9995-0.99997, TCE 0.14ug / ml, PCE 1.4ug / ml, the method of precision TCE 2 0,10 0,2 0 0ug / ml standard solution analysis, the coefficient of variation were 1.2 9%, 2.62%, 1.2 2%, PCE 14,155,2 90mg / L standard solution analysis, the coefficient of variation were 3.76%, 1.82%, 1.6 8%, stability PCETCE in activated carbon tube within 7 days, the coefficient of variation of 0.6 5- 3.2 1%, recovery 91.0- 10 8.4%, carbon disulfide desorption efficiency of TCEPCE 91.12- 106.1%, measured with PCETCE coexisting substances Dichloromethane, chloroform, benzene, toluene does not interfere with the target group Determination. The method is suitable for routine health supervision and monitoring work, which can simultaneously determine the trichlorethylene, tetrachlorethylene