顶空气相色谱法测定浓海水中挥发性卤代烃  

Determination of Volatile Halogenated Hydrocarbons from Desalinated Seawater Discharge by Headspace Gas Chromatography

作　　者：刘静[1] 曾兴宇[1] 周东星[1] 赵静红[1] 潘献辉[1] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《环境监测管理与技术》2016年第6期44-47,共4页The Administration and Technique of Environmental Monitoring

基　　金：海洋公益性行业科研专项基金资助项目(201305039);国家海洋局业务化基金资助项目(1511112000005)

摘　　要：采用顶空法分离并富集海水淡化排放的浓海水样品,用气相色谱法测定样品中的挥发性卤代烃,通过优化顶空时间、顶空温度、水样盐度等条件,提高顶空富集效率,使方法在2.00μg/L^100μg/L范围内线性良好,相关系数均>0.999,方法检出限为0.019μg/L^0.052μg/L。标准溶液平行6次测定结果的RSD为3.9%~9.6%,加标回收率为80.5%~125%。A method was developed for determining volatile halogenated hydrocarbons from desalinated seawater discharge by headspace gas chromatography. Determination parameters,such as headspace time,headspace temperature and salinity were discussed. The correlation coefficients were greater than 0. 999 in concentration range of 2. 00 μg / L to 100 μg / L. The method detection limits were 0. 019 μg / L ~ 0. 052 μg / L. The RSDs were 3. 9% ~ 9. 6%. The recoveries were in the range of 80. 5% to 125% by standard addition method.

关 键 词：挥发性卤代烃 顶空 气相色谱法 海水 

分 类 号：O657.71[理学—分析化学]