高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (5): 699.

• 论文 • 上一篇    下一篇

非平衡体系中固相微萃取技术的定量分析研究--快速监测水中痕量的有机污染物(多环芳烃)

王翊如1, 王小如1, Frank S. C. Lee2   

  1. 1. 厦门大学化学系, 教育部材料与生命过程分析科学开放实验室, 厦门 361005;
    2. 香港浸会大学化学系, 香港
  • 出版日期:1999-05-24 发布日期:1999-05-24
  • 通讯作者: 王小如
  • 作者简介:王翊如,女,27岁,博士研究生.

Quantitative Analysis by Solid-phase Microextraction in Nonequilibrium Situations

WANG Yi-Ru1, WANG Xiao-Ru1, Frank S. C. Lee2   

  1. 1. Department of Chemistry, The Research Laboratory of SEDC of Analytical Science for Material and Life Chemistry, Xiamen University, Xiam en, 361005;
    2. Department of Chemistry, HongKong Baptist University, HongKong
  • Online:1999-05-24 Published:1999-05-24

摘要: 采用固相微萃取技术,以100μm膜厚的聚二甲基硅氧烷纤维萃取水中10种多环芳烃,在60min采样时间内纤维上的吸附量与采样的时间近乎成正比,分配体系达到平衡前可以定量地测定水中的待测物.该方法的线性范围在0.1~100μg/L,检出限在0.01~0.03μg/L,15μg/L的回收率在80%~100%,相对标准偏差在20%以下.

关键词: 固相微萃取, 多环芳烃, 气相色谱-质谱, 水分析

Abstract: Solid-base microextraction technique has the advantages of a high efficiency, sensitivity, sinple operation and solvent free An optical fiber coated with 100μm Ennpolyd ethylsiloxane is used to extract 10 PAHs Since the absorption rate is stable w ithin 60min before equilibrium,the quantitative analysis may be realized in nonequilibrium situations The linear concentration、range from 0. 1μg/L to 100μg/L,the detection lin its are in the range of 0. 01-0. 03μg/L,the recoveries crew ithin 80% and 100%,and relative standard deviatants are below 20% for these PAHs

Key words: Solid-phase microex traction, Polycyclic aromatic hydrocarbon s(PAHs), Gas chromatography-mass spectrometry, Water analysis

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