高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (10): 1945.

• 研究论文 • 上一篇    下一篇

离子液体键合固相微萃取涂层用于水样中五氯酚的测定

周瑞娟, 段炼, 孙晓杰, 吴采樱, 邢钧   

  1. 武汉大学化学与分子科学学院, 生物医学分析化学教育部重点实验室, 武汉 430072
  • 收稿日期:2010-04-09 出版日期:2010-10-10 发布日期:2010-10-10
  • 通讯作者: 邢钧, 男, 博士, 副教授, 主要从事色谱及相关分离介质的研究. E-mail: gc-ms@263.net
  • 基金资助:

    国家自然科学基金(批准号: 20775056)资助.

Ionic Liquid Bonded Coating Applied to Determination of Pentachlorophenol in Water Sample by Solid-phase Micro-extraction Coupled with Gas Chromatography

ZHOU Rui-Juan, DUAN Lian, SUN Xiao-Jie, WU Cai-Ying, XING Jun*   

  1. Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
  • Received:2010-04-09 Online:2010-10-10 Published:2010-10-10
  • Contact: XING Jun. E-mail: gc-ms@263.net
  • Supported by:

    国家自然科学基金(批准号: 20775056)资助.

PDF (PC)

被引次数

19

摘要： 合成了1-甲基-3-三乙氧基硅基丙基咪唑二(三氟甲基磺酸酰)亚胺盐([TPMIM][NTf2])离子液体, 其热稳定性可达480 ℃, 并用其通过溶胶-凝胶法制备了一种含键合离子液体的固相微萃取(SPME)涂层. 该涂层的使用温度可达340 ℃. 优化了萃取温度、萃取时间、溶液的pH、盐效应、解析温度以及解析时间. 在最优条件下, 采用顶空固相微萃取结合GC/FID的方法测定水样中五氯酚(PCP)的检出限为1 ng/L, 线性范围为10-3~102 μg/L, 线性相关系数为0.9994, 相对标准偏差(RSD, n=5)为3.5%, 加标回收率为84.5%.

关键词: 固相微萃取, 离子液体, 溶胶-凝胶法, 五氯酚

Abstract: High thermal stability ionic liquid(IL), γ-triethoxysilyl-propyl-methyl-imidazolebis(trifluoromethane sulfonamide) salt, was synthesized and used to prepare an IL bonded coating for solid-phase micro-extraction(SPME) by sol-gel method. This fiber has a high usage temperature up to 340 ℃. Under optimized conditions, using headspace solid phase microextraction-gas chromatography-flame ionization detection method(HS-SPME-GC-FID), the detection limit for PCP is 0.5 ng/L(S/N=3), the linearity of the developed method is in the range of 10-2—102 μg/L with coefficients of correlation 0.9994, and the precision is 3.5%(RSD, n=5). For the lake water spiked with 1 μg/L PCP, the recovery of PCP is about 84.5%.

Key words: Solid-phase microextraction, Ionic liquid, Sol-gel method, Pentachlorophenol

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