原子吸收光谱法测定人工肾透析液的含量

Determination of dialysis solution for artificial kidney by atomic absorption spectrometry

目的：直接测定人工肾透析液中Ｎａ＋，Ｋ＋，Ｃａ２＋，Ｍｇ２＋的含量。方法：采用原子吸收光谱法（ＡＡＳ），同时加入１０ｇ·Ｌ－１ＣｓＣｌ和１０ｇ·Ｌ－１Ｌａ（ＮＯ３）３消除Ｋ＋，Ｎａ＋，Ｃａ２＋，Ｍｇ２＋共存时的增感效应。结果：方法回收率分别为（１０２．１±１．６０）％（Ｎａ＋），（１０１．０±１．３２）％（Ｋ＋），（９９．８±１．７８）％（Ｃａ２＋），（１００．５±１．２１）％（Ｍｇ２＋）。结论：该测定方法简单、快速，结果准确可靠。

OBJECTIVE: To determine directly the concentrations of Na^+, K^+, Mg^2+, Ca^2+ in dialysis solution. METHODS: The method of atomic absorption spectrometry (AAS) was used. RESULTS: The satisfactory recoveries [102.0% (Na^+), 101.0% (K^+), 99.8% (Ca^2+) and 100.5% (Mg^2+)] were obtained with RSD of 1.6%, 1.32%, 1.78% and 1.21%, respectively. The interference from coexistent elements (Na^+,K^+,Ca^2+,Mg^2+) was eliminated by adding 10 g·L^-1 CsCl and 10 g·L^-1 La(NO_3)_3 solution respectively. CONCLUSION: The method is sensitive, rapid and accurate.