摘要
建立了毛细管气相色谱法测定环境空气中丙二醇的含量,以甲醇为溶剂,活性炭富集空气中丙二醇,再用DB-624毛细管柱分离甲醇中的丙二醇,氢火焰离子化检测器检测,时间定性,峰面积定量。丙二醇回收率为98.2%～102.2%,当采样体积为30L,丙二醇最低检出质量浓度均为0.009mg/m3。
The method is established to detect the content of the propylene glycol in the air by the capillary gas chromatography. By which, the methanol is used as solvent, and the activated carbon is used to adsorb the propyl- ene glycol in the air. Then it is separated by the DB -624 capillary column and tested by the hydrogen flame ioni- zation detector. The time is qualitative and the peak area is quantified in this method. Propylene glycol recovery rate is between 98.2% - 102.2%. When the sampling volume is 30L, the minimum detectable concentration for propylene glycol is 0. 009mg/m3.
出处
《环境科学导刊》
2013年第3期115-116,共2页
Environmental Science Survey
关键词
丙二醇
环境空气
甲醇
气相色谱法
活性炭
propylene glycol
ambient air
methanol
gas chromatography
activated carbon
