FLAME AAS DETERMINATION OF LEAD IN WATER WITH FLOW-INJECTION PRECONCENTRATION AND SPECIATION USING FUNCTIONALIZED CELLULOSE SORBENT

被引：59

作者：

NAGHMUSH, AM ^{[1
]}

PYRZYNSKA, K ^{[1
]}

TROJANOWICZ, M ^{[1
]}

机构：

[1] UNIV WARSAW,DEPT CHEM,PL-02093 WARSAW,POLAND

来源：

TALANTA | 1995年 / 42卷 / 06期

关键词：

D O I：

10.1016/0039-9140(95)01499-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The on-line solid phase extraction of trace amount of lead in flow-injection system with flame AAS detection was investigated using cellulose sorbents with phosphonic acid and carboxymethyl groups, C-18 sorbent non-modified and modified with Pyrocatechol Violet or 8-quinolinol, commercial chelating sorbents Chelex 100 and Spheron Oxin 1000, non-polar sorbent Amberlite XAD-2 modified with Pyrocatechol Violet and several cation-exchange resins. The best dynamic characteristics of retention were observed for functionalized cellulose sorbents. For Cellex P assumed as optimum sorbent, elution with a separate fractions of nitric acid and ethanol allows the differentiation between tetraalkyllead and sum of inorganic lead and organolead species of smaller number of alkyl groups. The detection limit for the determination of inorganic Pb(II) was estimated as 0.17 mu g/l, at preconcentration from 50 ml sample at a how rate of 7 ml/min.

引用

页码：851 / 860

页数：10

共 28 条

[1] SPECIATION OF PARTS-PER-BILLION OF METAL-IONS USING SILICA AND C18-BONDED SILICA COLUMNS AND GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY [J].