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

• Technical Notes • Previous Articles    

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).

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

CLC Number: