自动顶空-毛细管气相色谱法测定水中苯系物  

Determination of benzene series in water by automatic headspace-capillary gas chromatography

作　　者：刘俩燕[1] 

机构地区：[1]广东省深圳市龙岗区疾病预防控制中心,广东深圳518172

出　　处：《中国卫生检验杂志》2010年第8期1918-1920,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:建立水中苯系物的测定方法。方法:优化色谱条件和顶空条件,采用自动顶空毛细管气相色谱法测定水中苯系物。结果:8种组分在7 min内完成测定并具有较好的分离效果;在1μg/L～100μg/L浓度范围内可获得较好的线性,相关系数0.999。用建立的方法对人工合成水样、标准进行测定,变异系数1.6%～6.5%。最低检测质量浓度为0.5μg/L(苯、甲苯),1μg/L(乙苯、苯乙烯、邻二甲苯、异丙苯),2μg/L(对、间二甲苯)。参加广东省疾病预防控制中心苯系物的能力比对实验,结果满意。结论:所建立的方法简便、快速,具有较好的精密度与准确度,可用于水中苯系物的测定。Objective：To set up the analysis methods of benzene series in water.Methods：Optimization of chromatographic conditions and headspace conditions,the introduction of automatic headspace capillary gas chromatography determination of benzene series in water.Results：The eight kinds of components in 7 minutes to complete and has good separation efficiency.In 1 μg/L～100 μg/L concentration range available to a good linear correlation coefficient of 0.999.The method used for synthetic water samples,the standard for the determination of the coefficient of variation of 1.6%～5.8%.The lowest detection concentration of 0.5 μg/L（benzene,toluene）,1 μg/L（ethylbenzene,styrene,o-xylene,cumene） 2 μg/L（p,m-xylene）.To participate in competition by Guangdong Center for Disease Control and Prevention,satisfactory results.Conclusion：The method is simple,rapid,and it has good precision and accuracy,which can be used for the determination of benzene in water.

关 键 词：自动顶空-毛细管气相色谱 苯系物 饮用水 

分 类 号：O657.71[理学—分析化学]