NDLI: On-line preconcentration of aluminium, gallium and indium with quinolin-8-ol for determination by atomic absorption spectrometry

Content Provider	Royal Society of Chemistry (RSC)
Author	Mohammad, Bashir Littlejohn, David Ure, Allan M.
Copyright Year	1993
Abstract	A study of the chemistry of aluminium, gallium and indium ions in solution, their behaviour under different pH conditions and their complexation with different buffering reagents was used to develop on-line preconcentration procedures for the determination of the elements by flame atomic absorption spectrometry. The buffers investigated were acetate, ammonium chloride, citrate, maleate, malonate, oxalate, picolinate and tartrate. A column of quinolin-8-ol, immobilized or controlled-pore glass, was used to collect the elements from the buffered solutions. The best buffer for aluminium was 0.1 mol l–1 malonate at pH 10. The optimum buffer for gallium and indium was also 0.1 mol l–1 malonate at pH ranges of 8–10 and 9.2–10, respectively. The use of malonate buffer makes a common procedure possible for all three elements. The collected analyte was eluted from the column with a mixture of hydrochloric and nitric acids, each at a concentration of 1 mol l–1. For a collection time of 3 min, at a flow rate of 6 ml min–1, the detection limit for all three elements was approximately 3 ng ml–1, with enrichment factors of between 70 and 80. Interference effects were studied and the procedures developed were applied to the analysis of natural waters.
Starting Page	325
Ending Page	331
Page Count	7
File Format	PDF
ISSN	02679477
Volume Number	8
Issue Number	2
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/JA9930800325
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Organic chemistry Aluminium Gallium Indium PH Absorption spectroscopy Ammonium chloride Citric acid Malonic acid Picolinic acid Tartaric acid Analyte
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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