DETERMINATION OF STRONTIUM AT LOW CONCENTRATION LEVELS BY FLAME ATOMIC-ABSORPTION SPECTROMETRY ASSOCIATED ONLINE WITH CONTINUOUS COPRECIPITATION PRECONCENTRATION

被引：9

作者：

LIN, SL

ZHENG, CS

ZU, HJ

机构：

[1] Department of Applied Chemistry, China University of Geosciences, Wuhan

来源：

TALANTA | 1995年 / 42卷 / 08期

关键词：

D O I：

10.1016/0039-9140(95)01555-P

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sensitive method for the determination of strontium has been developed. In this work strontium was determined by flame atomic absorption spectrometry using a continuous copreconcentration dissolution procedure based on the formation of lead sulfate followed by elution with hot EDTA solution. Manifold parameters and chemical conditions are described in detail. A concentration factor of up to 61 can be achieved at a sampling rate of 20-30 h(-1). The detection limit for strontium was 0.9 ng ml(-1) (3 sigma) and the relative standard deviation was 3.5% (n = 8) at a concentration level of 100 ng ml(-1).

引用

页码：1143 / 1149

页数：7

共 15 条

[1] CRITICAL FACTORS IN DETERMINATION OF ALKALINE EARTH ELEMENTS IN GLASS BY ATOMIC ABSORPTION SPECTROMETRY [J].