您的位置:首页  > 论文页面

海洋沉积物中多环芳烃标准物质均匀性检验的研究

发表时间:2008-08-31  浏览量:1478  下载量:971
全部作者: 徐恒振,周传光,姚子伟,林忠胜
作者单位: 国家海洋环境监测中心
摘 要: 建立了海洋沉积物中多环芳烃(polycyclic aromatic hydrocarbons, PAHs)标准物质均匀性检验的方法。应用超声提取、不同正己烷-二氯甲烷洗脱剂的硅胶-氧化铝旋涡-离心净化、毛细管气相色谱-质谱-选择离子监测模式(GC-MS-SIM),对海洋沉积物(过200目筛)中17组分PAHs标准物质进行了测定。结果表明:海洋沉积物中17组分PAHs重复性测定的相对标准偏差和保留时间的相对标准偏差分别在1.03%~9.70%和0.009%~0.046%之间,相邻PAHs之间有很好的分离;17组分PAHs的毛细管GC-MS-SIM检出限在1.0~10.0 pg之间;海洋沉积物中17组分PAHs 18次抽样试验的统计量F值均小于临界值Fα值(α=0.05),海洋沉积物(过200目筛)中PAHs标准的均匀性较好,可作为海洋沉积物监测用PAHs标准物质。
关 键 词: 海洋科学;海洋沉积物;多环芳烃;标准物质;均匀性;检验
Title: Study on testing of homogeneities of standard reference materials of polycyclic aromatic hydrocarbons in marine sediments
Author: XU Hengzhen, ZHOU Chuanguang, YAO Ziwei, LIN Zhongsheng
Organization: National Marine Environmental Monitoring Center
Abstract: The paper established a technique for testing of homogeneities of standard reference materials (SRM) of polycyclic aromatic hydrocarbons (PAHs) in marine sediments. The determination of SRM of 17 kinds of PAHs in marine sediments (under mesh 200) was performed with ultrasonic wave extraction (UWE) and silica gel-alumina-swirl-centrifugal separation (SASCS) with elution of different extract solvents of hexane and dichloromethane by gas chromatography coupled with mass spectrometry-selected ion monitoring (GC-MS-SIM) with capillary column. It was showed that the RSD of repeated relative response factors and relative retain time ranged from 1.03% to 9.70% and 0.009% to 0.046%, respectively. It was revealed that there was a good separation in the near PAHs each other. The limits of detection of 17 kinds of PAHs ranged from 1.0 pg to 10.0 pg. It indicated that there were the homogeneities of 17 kinds of PAHs in marine sediments (under mesh 200) in 18 times of sampled experiments because of which the value of statistical parameters of F was all less than the critical value of statistical parameters of Fα (α=0.05), and illuminated that it could be used for the SRM in marine environmental monitoring.
Key words: marine science; marine sediments; polycyclic aromatic hydrocarbons; standard reference materials; homogeneities; testing
发表期数: 2008年12月第16期
引用格式: 徐恒振,周传光,姚子伟,等. 海洋沉积物中多环芳烃标准物质均匀性检验的研究[J]. 中国科技论文在线精品论文,2008,1(16):1757-1763.
 
0 评论数 0
暂无评论
友情链接