A MECHANIZED SYSTEM FOR THE DETERMINATION OF LOW-LEVELS OF QUICKLY REACTING ALUMINUM IN NATURAL-WATERS

被引：19

作者：

DANIELSSON, LG ^{[1
]}

SPAREN, A ^{[1
]}

机构：

[1] ROYAL INST TECHNOL,DIV ANALYT CHEM,S-10044 STOCKHOLM,SWEDEN

来源：

ANALYTICA CHIMICA ACTA | 1995年 / 306卷 / 2-3期

关键词：

ATOMIC ABSORPTION SPECTROMETRY; LOW INJECTION; ALUMINUM; METALS; SPECIATION; TRACE METAL ANALYSIS;

D O I：

10.1016/0003-2670(94)00680-K

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A continuous flow system has been connected to a graphite furnace atomic absorption spectrometer. The system is used to determine low levels of ''quickly reacting Al'' (Al-qr) in natural waters. In the flow system, aluminium reacts with oxine for 2.3 s and the formed complex is then extracted into toluene. Iron interference is minimized with a masking buffer present in the reagent. Via a simple interface, the toluene extract is introduced into the graphite tube. Good repeatabilities (R.S.D. ca. 2%, n = 10) were obtained, both for standard solutions and for natural waters. The detection limit is < 0.5 mu g l(-1), and the sample throughput using 3 injections/sample, is ca. 10 samples h(-1). The system has been used for determining Al-qr in tap water, and is well suited for aluminium fractionation in near-neutral waters.

引用

页码：173 / 181

页数：9

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