毛细管柱气相色谱法同时测定大气中均三甲苯和偏三甲苯

Simultaneous determination of the atmosphere are three toluene and three toluene by capillary column gas chromatography

建立了毛细管柱气相色谱法同时测定大气中均三甲苯和偏三甲苯。均三甲苯和偏三甲苯活性炭吸附，二硫化碳解析，NNOWAX毛细管柱分离，直接进样分析，氢火焰离子化检测器检测，时间定性，其均三甲苯94．2％～103．8％，偏三甲苯回收率为95．0％～102．4％。当采样体积为30L，均三甲苯和偏三甲苯最低检出质量浓度均为0．002mg／m3。

Acapillary gas at the same time determination of atmospheric all three toluene and three toluene chromatography. All three toluene and three toluene adsorption of activated carbon, carbon disulfide analysis, NNOWAX capillary column, direct injection analysis, hydrogen flame ionization detector, the qualitative time, the mesitylene by 94.2% - 103.8%, partial three toluene recovery rate is 95% - 102.4%. When the sampling volume was 30L, all three toluene and three toluene the minimum detectable concentration was 0. 002mg/ m3.