文献类型：期刊文献

中文题名：常规离子色谱系统-电容耦合非接触式电导检测器的构建

英文题名：Fabrication of conventional ion chromatography-capacitively coupled contactless conductivity detector

作者：陈小花[1];侯彦杰[1];杨丙成[1];艾雷[2]

机构：[1]华东理工大学药学院,上海200237;[2]苏州明昊色谱技术有限公司,江苏苏州215500

年份：2018

卷号：36

期号：8

起止页码：822

中文期刊名：色谱

外文期刊名：Chinese Journal of Chromatography

收录：CSTPCD;;Scopus;WOS:【ESCI(收录号:WOS:000452617500017)】；北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；PubMed;

基金：National Natural Science Foundation of China (No. 21477037).

语种：中文

中文关键词：离子色谱;电容耦合非接触式电导检测器;信噪比;阴离子

外文关键词：ion chromatography(IC);capacitively coupled contactless conductivity detector(C 4D);signal-to-noise ratio(SNR);anions

摘要：通过考察电极长度及电极间距、检测管管径及材质、激励信号频率、电压和波形等参数对信噪比的影响,研制了一种适用于常规型离子色谱系统的电容耦合非接触式电导检测器(C^4D)。在抑制模式下,该检测器对常见无机阴离子(F^-、Cl^-、NO_2^-、Br^-、NO_3^-和SO_4^(2-))的检出限(信噪比=3)为0.02~0.08μmol/L;峰面积的相对标准偏差<1.8%(n=6);在0.1~10μm o l/L范围内上述6种无机阴离子线性关系良好,相关系数(R^2)>0.999。自制C4D的主要性能参数与商品化接触式电导检测器相当。该检测器具有结构简单、成本低廉、无电极污染等优点,有利于拓展离子色谱的应用范围。
A conventional ion chromatography-capacitively coupled contactless conductivity detector(IC-C 4D)was fabricated.The main parameters,such as the electrode length and gap,tube material and inner diameter,excitation frequency,voltage and waveforms,were optimized.The self-made C 4D showed comparable performance to that of a commercial contact conductivity detector.Under the suppressed mode,the limits of detection of common inorganic anions(F-,Cl-,NO-2,Br-,NO-3,and SO 2-4)were 0.02-0.08μmol/L.The relative standard deviations(RSDs)for the peak area were less than 1.8%(n=6).The linearities of the six common inorganic anions were achieved in the range of 0.1-10μmol/L with correlation coefficients(R 2)>0.995 0.The advantages of such a C 4D in a relatively conventional mode include simple structure,low fabrication cost and no electrode fouling,and it will help extend the application of IC.