OPTIMIZATION OF THE PROCEDURE FOR THE DETERMINATION OF ALKALI AND ALKALINE-EARTH ELEMENTS IN SEA-WATER BY SUPPRESSED ION CHROMATOGRAPHY

被引：17

作者：

BETTI, M

GIOVANNONI, G

ONOR, M

PAPOFF, P

机构：

[1] Institute of Instrumental Analytical Chemistry, CNR, Deparment of Chemistry, 56126 Pisa

来源：

JOURNAL OF CHROMATOGRAPHY | 1991年 / 546卷 / 1-2期

关键词：

D O I：

10.1016/S0021-9673(01)93024-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An ion chromatographic procedure is described for the determination of alkali and alkaline-earth metal ions in sea water the molar ratios of which, referred to lithium, are: 2.5 . 10(4) for sodium, 5 . 10(2) for potassium and calcium, and 3.5 . 10(3) for magnesium. Lithium, potassium, magnesium and calcium are simultaneously analyzed after a 50-fold dilution, sodium is determined separately after a 2000-fold dilution. For all these elements, a dynamic range of several orders of magnitude and a R.S.D. varying from 0.2-2.2%, though typically lower than 1%, were found.

引用

页码：259 / 271

页数：13