摘要
提出了气相色谱-质谱法测定水中酚类化合物含量的方法。样品经苯乙烯-二乙烯苯聚合物柱萃取后,所得净化液中酚类化合物与五氟苄基溴进行衍生化反应,产物用HP-5MS毛细管柱分离,采用负化学电离源选择离子监测模式测定。酚类化合物的检出限(3S/N)在0.03~0.09μg·L^(-1)之间。以水样为基体,加入3个浓度水平的标准溶液进行加标回收试验,回收率在64.9%~87.8%之间,相对标准偏差(n=7)在4.9%~17%之间。
A method of GCMS for determination of phenols in water was proposed. The sample was extracted by passing through microcolumn packed with modified polymer of styrene-divinylbenzene, then derivatized with pentafluorobenzyl bromide. The derivates were separated on DB-SMS capillary column, and determined by MS with negative chemical ionization and under selected ion monitoring mode. Values of limit of detection （3S/N） were found in the range of 0. 03-0. 09 μg · L^-1. Using water sample as matrixes, tests for recovery were made at 3 concentration levels, values of recovery found were in the ranges of 64. 9%-87. 8% with RSD＇s （n 7） in the range of 4.9 %- 17 %.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2013年第10期1155-1158,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
中国地质调查局地调项目持续性有机污染物实验技术与分析方法研究(G201120)资助
