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.
出处
《水资源保护》
CAS
2012年第3期72-74,共3页
Water Resources Protection
基金
水利部公益项目(201001010)
