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首页> 外文期刊>Journal of the Brazilian Chemical Society >Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
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Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection

机译：非接触电导检测通过毛细管电泳改善了高钠浓度基质中IA和IIA金属阳离子的分离

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摘要

One of the most common uses of capillary electrophoresis with conductometric detection is the analysis of different samples containing alkaline and alkaline earth metals. However, the high sodium content, which is a very common occurrence, may cause loss of resolution of some peaks. In this work, the conditions and a running buffer suitable for serum and hemodialysis fluid analyses are presented. The approach basically consists in the reduction of mobilities of Ca2+ and Mg2+ by addition of methanol and lactate in the running buffer. Limits of detection in the range from 0.5 to 1.0 mmol L-1 with molar Na+/Ca2+ ratios as high as 1000 were obtained, which are conditions that exceed the requirements of the proposed determination.
机译：带电导检测的毛细管电泳最常见的用途之一是分析含有碱金属和碱土金属的不同样品。但是，钠含量很高（这是很常见的情况），可能会导致某些峰的分离度降低。在这项工作中，提出了适用于血清和血液透析液分析的条件和运行缓冲液。该方法主要包括通过在运行缓冲液中添加甲醇和乳酸盐来降低Ca2 +和Mg2 +的迁移率。当Na + / Ca2 +的摩尔比高达1000时，检测限为0.5至1.0 mmol L-1，这是超出建议测定条件的条件。

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