色谱

色谱 ›› 2016, Vol. 34 ›› Issue (4): 442-446.DOI: 10.3724/SP.J.1123.2015.12025

• 技术与应用 • 上一篇    

离子色谱-柱切换法测定土壤浸出液中的氟离子

姜新华1, 倪承珠2, 朱彬和2, 赵训燕2, 陈素清3, 吕伟德4, 张嘉捷2, 张培敏2, 李刚5, 朱岩2   

  1. 1. 浙江衢化医院, 浙江衢州 324004;
    2. 浙江大学化学系, 浙江杭州 310028;
    3. 台州学院医药化工学院, 浙江台州 317000;
    4. 杭州职业技术学院临江学院, 浙江杭州 310018;
    5. 绍兴市环境监测中心站, 浙江绍兴 312000
  • 收稿日期:2015-12-22 出版日期:2016-04-08 发布日期:2012-11-16
  • 通讯作者: 朱岩
  • 基金资助:

    国家重大科学仪器设备开发专项(2012YQ09022903);浙江省微量有毒化学物健康风险评估技术研究重点实验室项目(2014006,2014007);浙江省自然科学基金项目(LZ16B050001,LY15B050001,LY12B05003,LQ13B050001,LY13B020001);浙江省公益性技术应用研究(分析测试)项目(2015C37022).

Determination of fluoride in soil water extract by ion chromatography with column-switching technique

JIANG Xinhua1, NI Chengzhu2, ZHU Binhe2, ZHAO Xunyan2, CHEN Suqing3, LV Weide4, ZHANG Jiajie2, ZHANG Peimin2, LI Gang5, ZHU Yan2   

  1. 1. Zhejiang Quhua Hospital, Quzhou 324004, China;
    2. Department of Chemistry, Zhejiang University, Hangzhou 310028, China;
    3. School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 317000, China;
    4. School of Linjiang, Hangzhou Vocational & Technical College, Hangzhou 310018, China;
    5. Shaoxing Environmental Monitoring Central Station, Shaoxing 312000, China
  • Received:2015-12-22 Online:2016-04-08 Published:2012-11-16
  • Supported by:

    National Important Project on Science Instrument (No. 2012YQ09022903);Foundation of Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals of Zhejiang Province (Nos. 2014006, 2014007);Zhejiang Provincial Natural Science Foundation (Nos. LZ16B050001, LY15B050001, LY12B05003, LQ13B050001, LY13B020001);Zhejiang Provincial Public Welfare Research Project (Analysis and Testing) (No. 2015C37022).

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摘要：

建立了离子色谱-柱切换测定土壤浸出液中氟离子的方法。使用柱切换技术,将样品通过高聚物反相色谱柱进行在线预处理,分离氟离子和小分子有机酸,同时除去水溶性有机杂质,采用收集环收集氟离子并进入分析系统分析,消除了测定氟离子时普遍存在的干扰问题。分析系统的淋洗液为KOH溶液,流速为1.0 mL/min,采用抑制性电导检测,外标法定量。氟离子的线性范围为0.05~10.0 mg/L,相关系数为0.9999,加标回收率为103.4%~105.3%,相对标准偏差为2.0%~2.1%,检出限 (S/N=3)为5.50 μg/L。该方法适用于测定复杂基体样品中的氟离子。

关键词: 氟离子, 浸出液, 离子色谱, 土壤, 柱切换

Abstract:

A new method was proposed for the determination of fluoride in soil water extract by ion chromatography with column-switching technique. A reversed-phase column was used as a pretreatment column on-line to separate fluoride and organic acids as well as to eliminate organics. Fluoride was collected by a collection loop and delivered to the analytical system. Under the optimum conditions, the linear range of the method for fluoride was 0.05-10.0 mg/L (r=0.9999), and the limit of detection (S/N=3) was 5.50 μg/L. The recovery was in the range of 103.4%-105.3% with the relative standard deviation of 2.0%-2.1%. The method could be applied to determine fluoride in complicated samples.

Key words: column-switching, fluoride, ion chromatography (IC), soil, water extract

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