顶空-毛细管柱气相色谱法测定水中八种苯系物的研究  

Study on Measuring Eight Volatile Benzene Series Compounds in Water by Headspace-gas Chromatography

作　　者：向传宝[1,2] 孙力平[1,2] 高士奇[1,2] 范志云[1,2] 陈旭[1,2] 

机构地区：[1]天津城市建设学院天津市水质科学与技术重点实验室 [2]天津城市建设学院环境与市政工程系,天津300384

出　　处：《天津城市建设学院学报》2011年第1期44-47,共4页Journal of Tianjin Institute of Urban Construction

基　　金：国家水体污染控制与治理科技重大专项资助(2009ZX07419-001)

摘　　要：通过试验研究,建立了顶空-毛细柱气相色谱法测定水中苯、甲苯、乙苯、邻二甲苯、间二甲苯、对二甲苯、苯乙烯、异丙苯的检测方法.本研究对平衡时间、水浴温度等进行了优化选择,并通过选用elite-wax色谱柱,使难以分离的间二甲苯、对二甲苯、苯乙烯、邻二甲苯得到了较好的分离.结果表明:苯系物各组分线性方程的相关性良好,其检出限为0.28～0.77,μg/L,平均回收率在89.5%～109.6%之间.该方法准确、快捷、线性范围广,满足饮用水和地表水中低浓度挥发性苯系物的测定.Through experimental study,this paper proposes the test method of measuring eight volatile benzene series compounds in water by headspace-gas chromatography.This paper carries out optimal selection on the water bath temperature and equilibrium time.Through using chromatographic column Elite-wax,the m-xylene,p-xylene,cinnamene,and ortho-xylene are effectively separated.The results show that the correlation of linear equation for BTEX is fine,the detection limit is 0.28～0.77 μg/L,the average recovery rates lie in the range of 89.5%～109.6%.This method is accurate,quick with a wide linear range,and it is suitable for measuring low or moderate concentration BTEX in drinking water and surface water.

关 键 词：顶空 毛细管柱 气相色谱 苯系物 

分 类 号：X832[环境科学与工程—环境工程]