二维离子色谱法同时检测矿泉水中的阴离子和阳离子。

Simultaneous detection of anions and cations in mineral water by two dimensional ion chromatography.

机构信息

Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, China; University of Chinese Academy of Science, Beijing 100049, China.

China College of Materials Science and Engineering, Qingdao University of Science and Technology, China.

出版信息

J Chromatogr A. 2018 Jun 15;1554:123-127. doi: 10.1016/j.chroma.2018.04.017. Epub 2018 Apr 9.

DOI:10.1016/j.chroma.2018.04.017

PMID:29709342

Abstract

A two dimensional ion chromatography (2D-IC) method was improved for the simultaneous determination of six cations and seven anions using one-valve switching after injection and conductivity detector. The trap conditions and valve-switch timing were optimized. The method has good accuracy and sensitivity for the simultaneous separation of inorganic anions and cations with a mean correlation coefficient of >0.99, repeatability of 0.60%-3.0% for eight replicates, reproducibility of 0.78%-3.1%, and spiked recovery rate of 88.7%-110%. The method was successfully applied to the analysis of inorganic anions and cations in four kinds of mineral water and can completely satisfy the demand of water quality monitoring.

摘要

建立了一种采用阀切换-二维离子色谱法同时测定六种阳离子和七种阴离子的分析方法。在进样后采用单通阀切换，以电导检测器进行检测。对淋洗条件和阀切换时间进行了优化。该方法用于同时分离无机阴离子和阳离子，具有良好的准确性和灵敏度，八种重复测定的平均相关系数>0.99，精密度为 0.60%-3.0%，重复性为 0.78%-3.1%，加标回收率为 88.7%-110%。该方法成功地应用于四种矿泉水样品中无机阴离子和阳离子的分析，完全满足水质监测的要求。