摘要
应用气相色谱-质谱法测定水中24种挥发性有机物的含量。选择顶空平衡温度和时间分别为60℃和15min,用Rtx-1MS色谱柱分离,电子轰击离子源检测。24种挥发性有机物的质量浓度在2.5～20μg.L-1范围内与其峰面积呈线性关系,方法检出限(3s/k)在0.20～0.94μg.L-1之间。在3个浓度水平上进行加标回收试验,方法的回收率在75.3%～105.0%之间,相对标准偏差(n=7)在3.2%～12.6%之间。
CA-MS was applied to the determination of 24 volatile organic compounds （VOC＇s） in water. The equilibrium temperature and time of head space were selected at 60℃ for 15 min. The analyte were separated on Rtx-IMS column. EI source was used in MS. Linear relationships between values of peak area and mass concentration of 24 VOC＇s were kept in the range of 2.5--20μg·L-1. Detection limits （3s/k） found were ranged from 0. 02 to 0. 94μg·L-1. Tests for recovery were performed by addition of mixed standard of 24 VOC＇ s at 3 concentration levels, results of recovery found were in the range of 75.3%--105.0% with RSD＇s （n= 7） in the range of 3.2 % -- 12.6%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2012年第5期576-579,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
广西科学研究与技术开发计划项目(桂科攻-0779011)
