吹扫捕集气质联用法测定饮水中挥发性有机物  

Volatile Organic Compounds Determination in Drinking Water by GC / MS Spectrometry with Puffing and Trapping Samples

作　　者：朱芸[1] 雒婉霞[1] 赵清荣[1] 杨雪丽[1] 王庆国[1] 杨勤德[1] 

机构地区：[1]新疆维吾尔自治区疾病预防控制中心

出　　处：《环境卫生学杂志》2016年第2期140-144,共5页JOURNAL OF ENVIRONMENTAL HYGIENE

摘　　要：目的建立吹扫捕集气质联用(P&T-GC/MS)方法测定《生活饮用水卫生标准》(GB 5749-2006)中规定的12种挥发性有机物(VOCs)。方法饮用水中的微量有机物经吹扫捕集提取后,HP-VOC毛细管色谱柱进行程序升温分离,质谱选择离子监测方式分析检测饮用水中12种挥发性有机物,外标法定量。结果 12种挥发性有机物的线性范围为0.4μg/L^100.0μg/L,浓度范围内的线性相关系数为0.998~0.999,检出限为0.011μg/L^0.196μg/L,相对标准偏差(RSD)2.37%~6.29%(n=11),加标回收率为78.0%~119.5%。结论该方法适用于饮水中12种挥发性有机物的同时测定。Objective To establish a method for the determination of 12 kinds of volatile organic compounds（ VOCs） in drinking water simultaneously by gas chromatography-mass spectrometry with puffing and trapping samples（ PT-GC / MS）. Methods Twelve kinds of volatile organic compounds（ VOCs） in drinking water based on the Standards for Drinking Water Quality（ GB 5749- 2006） were separated by HP-VOC capillary column with temperature programming,detected by gas chromatography- mass spectrometry with puffing and trapping samples,and quantified by using external standards. Results The linear range for VOCs was 0. 4 μg / L - 100. 0 μg / L（ r = 0. 998- 0. 999）; the detection limits were 0. 011 μg / L - 0. 196 μg / L; the relative standard deviation was 2. 37% -6. 29%（ n = 11）; and the spiked recovery were 78. 0% - 119. 5%. Conclusions This method were suitable for simultaneous determination of 12 kinds of volatile organic compounds in drinking water based on the regulation in the Standards for Drinking Water Quality.

关 键 词：生活饮用水 气质联用 吹扫捕集 挥发性有机物 

分 类 号：R123.1[医药卫生—环境卫生学]