吹扫捕集-气相色谱法快速分析水中苯系物和氯苯类化合物  

Fast analysis of BTEX and chlorbenzene compounds in water by purge-and-trap gas chromatography method

作　　者：杨勋兰[1] 李玉洪[1] 王玥劼[1] 刘婷婷[1] 王丽伟[1] 

机构地区：[1]黄河流域水环境监测中心,河南郑州450004

出　　处：《水资源保护》2012年第3期72-74,共3页Water Resources Protection

基　　金：水利部公益项目(201001010)

摘　　要：为了建立水中苯系物和氯代苯类化合物的吹扫捕集-气相色谱监测方法,确定了吹扫时间10min、解析温度230℃、解析时间2min等吹扫捕集条件,以及大口径、强极性毛细管色谱柱、程序升温和FID检测器等气相色谱条件。12种化合物色谱分离过程只需16min,1个样品分析时间小于30min,检测限小于0.08μg/L,加标回收率95%～104%,相对标准偏差1.3%～4.3%。该方法直接进样,操作快捷简便,无污染,适用于饮用水和水源水的调查监测和应急监测。To develop a purge-and-trap gas chromatography method tbr identitication of BTEX and clalorbenzene compounds in water, the purge and trap conditions, including a purge time of ten minutes, a desorption temperature of 230℃, and a desorption time of two minutes, and the gas chromatography conditions, including the large-caliber and strong-polarity capillary chromatographic colmnn, prograrrnned temperature rise, and FID detector, were determined. The chromatographic separation time was only 16 minutes for 12 kinds of compounds, and the analysis time for a single sample was less than 30 minutes. The detection limits were less than 0.08 μg/L, the extraction recovery was between 95 % and 104%, and the relative standard deviation was between 1.3% to 4.3%. This method can be used easily without causing pollution, and it is applicable to investigation and emergency monitoring of BTEX and chlorbenzene compounds in the drinking water and source water.

关 键 词：苯系物 氯代苯类化合物 吹扫捕集 气相色谱 

分 类 号：X832[环境科学与工程—环境工程]