您的位置:首页  > 论文页面

油种多环芳烃分离/鉴别与油标优先候选物的研究

发表时间:2008-07-15  浏览量:1538  下载量:734
全部作者: 徐恒振,姚子伟,周传光,尚龙生
作者单位: 国家海洋环境监测中心
摘 要: 本文建立了我国常见油种和我国海水提取油中多环芳烃(polycyclic aromatic hydrocarbors,PAHs)的高效液相色谱(high performance liquid chromatography,HPLC)的分离/鉴别以及油类标准物质(油标)的优先候选物的筛选方法;应用模糊最大矩阵元聚类分析,由我国常见油种优化筛选出油标的优先候选物。结果表明,80 mL二氯甲烷和80 mL苯分别淋洗(1 mL/min的速率)硅胶-氧化铝柱上10种PAHs的回收率无显著性差异,其回收率为87%~120%;80 mL二氯甲烷淋洗(1 mL/min的速率)硅胶-氧化铝柱上大庆原油与10种加标PAHs,其回收率为75%~112%;HPLC测定10种PAHs响应因子的相对标准偏差为7.8%~16.5%;HPLC测定10种PAHs相对保留时间的相对标准偏差为0.0%~5.1%;HPLC测定10种PAHs检出限为3.1~37.6 ng;同种油重复性的模糊最大矩阵元λi值的差异,较异种油间λi值的差异小;由油种间λi值的差异,可鉴别我国常见油种;比较我国海水提取油与我国常见油种间λi值的大小,可以筛选出海水油标的优先候选物。
关 键 词: 海洋科学;油种;提取油;多环芳烃;高效液相色谱;油标
Title: Study on separation and identification of PAHs in various types of oil for screening of oil standard materials
Author: XU Hengzhen, YAO Ziwei, ZHOU Chuanguang, SHANG Longsheng
Organization: National Marine Environmental Monitoring Center
Abstract: The paper established a method for separation and identification of polycyclic aromatic hydrocarbons (PAHs) in various types of oil for screening of oil standard materials by high performance liquid chromatography (HPLC). By clustering analysis of fuzzy maximum matrix, the prior types of oil optimized for oil standard materials from the common types of oil in China were obtained. The results showed that the recoveries of PAHs in silica gel-alumina column eluted with 80 mL dichloromethane and 80 mL benzene (1 mL/min) ranged from 87% to 120%, which had no significant difference. The recoveries of Daqing crude oil and 10 kinds of PAHs in silica gel-alumina column eluted with 80 mL dichloromethane (1 mL/min) ranged from 75% to 112%, and the RSD of response factors and relative retain time ranged from 7.8% to 16.5% and 0.0% to 5.1%, respectively. The detection limits of 10 kinds of PAHs ranged from 3.1 ng to 37.6 ng. It indicated that the difference in value of λi of the fuzzy maximum matrix between the same kind of oil was less remarkable than that between the different kinds, and it could be used for identification of the common kinds of oils in China. The prior types of oil for the oil standard materials could be optimized by comparing the difference in the value of λi of fuzzy maximum matrix between the extracted oils from seawater and the common kinds of oil in China.
Key words: marine science; oil types; extracted oils; polycyclic aromatic hydrocarbons; high performance liquid chromatography; oil standard materials
发表期数: 2008年11月第13期
引用格式: 徐恒振,姚子伟,周传光,等. 油种多环芳烃分离/鉴别与油标优先候选物的研究[J]. 中国科技论文在线精品论文,2008,1(13):1440-1448.
 
0 评论数 0
暂无评论
友情链接