A SIMPLE ELECTROLYTE FOR DETERMINATION OF SMALL CATIONS IN NATURAL WATERS BY CAPILLARY ELECTROPHORESIS
A SIMPLE ELECTROLYTE FOR DETERMINATION OF SMALL CATIONS IN NATURAL WATERS BY CAPILLARY ELECTROPHORESIS
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通过毛细管电泳测定天然水中小阳离子的简单电解质
DOI：
10.1081/ese-100104122
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Wei
中科院分区：
文献类型：
--
作者：
R. Juang;Wei
本文研究了三种简单电解质体系测定硫酸盐水溶液中的四种碱金属和碱土金属离子（K+、Na+、Ca ~（2+）、Mg ~（2+））。在5 mM 4-氨基吡啶-5%v/v甲醇体系中，加入1 M乙醇酸调节pH至4.30，在214 nm处进行间接紫外检测。在15 kV电压下，4种阳离子在5 min内分离良好。所有四种阳离子的校准曲线的线性关系高达50 ppm。为了评价这种电解质系统，这些阳离子的测定也进行了真实的雨水沃茨。
Three simple electrolyte systems were tested for determination of four alkali and alkaline earth cations (K+, Na+, Ca2+, Mg2+) in aqueous sulfate solutions. The separation was achieved in a system of 5mM 4-aminopyridine and 5%v/v methanol with indirect UV detection at 214 nm, in which the electrolyte pH was adjusted to be 4.30 by adding 1M glycolic acid. Four cations were well separated within 5 min at an applied voltage of 15 kV. Linear relationships of the calibration curves were obtained up to 50 ppm for all four cations. To evaluate this electrolyte system, the determination of these cations was also conducted for real rain waters.