DETERMINATION OF FREE CALCIUM AND MAGNESIUM CONCENTRATIONS IN URINE SAMPLES BY AN ION EXCHANGE-INDUCTIVELY COUPLED PLASMA-ATOMIC EMISSION-SPECTROSCOPY METHOD

被引：7
作者：
REN, H
KRATOCHVIL, B
机构：
[1] Department of Chemistry, University of Alberta, Edmonton
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 1995年 / 60卷 / 2-4期
关键词：
CHEMICAL SPECIATION; URINE; ION-EXCHANGE; IONIZED CALCIUM; IONIZED MAGNESIUM; FREE ION MEASUREMENT;
D O I：
10.1080/03067319508042886
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An ion exchange-inductively coupled plasma emission spectroscopy method was developed to measure free calcium and magnesium concentrations simultaneously in urine under non-trace ion exchange conditions. A single set of standards was sufficient for calibration of a given ion-exchange column over a range of concentrations of sodium, potassium, calcium, and magnesium. Zinc and urea at typical urine levels do not interfere. Analyses of four normal urines showed that from 40 to 66 percent of the calcium and magnesium was present in the free, or non-complexed, form.
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页码：303 / 312
页数：10
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