ONLINE PRECONCENTRATION OF ALUMINUM WITH IMMOBILIZED 8-HYDROXYQUINOLINE FOR DETERMINATION BY ATOMIC-ABSORPTION SPECTROMETRY

被引:49
作者
MOHAMMAD, B
URE, AM
LITTLEJOHN, D
机构
[1] Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, Cathedral Street
关键词
ALUMINUM; RIVER AND SEA-WATER ANALYSIS; FLAME ATOMIC ABSORPTION SPECTROMETRY; ONLINE PRECONCENTRATION WITH 8-HYDROXYQUINOLINE;
D O I
10.1039/ja9920700695
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Knowledge of the chemistry of Al in solution, its behaviour under different pH conditions and its complexation with different buffering reagents has been used to devise and optimize an on-line preconcentration procedure for the determination of Al by flame atomic absorption spectrometry. A column of 8-hydroxyquinoline immobilized on controlled-pore glass is used to collect Al in a buffer of 0.1 mol dm-3 malonate at pH 10. The Al is eluted into the nebulizer of a dinitrogen oxide-acetylene flame with a mixture of 1 mol dm-3 HCl and 1 mol dm-3 HNO3. For a collection period of 3 min at a flow rate of 6 cm3 min-1, the detection limit is 3 ng cm-3 with an enrichment factor of 76. The method has been applied successfully to river and sea-waters.
引用
收藏
页码:695 / 699
页数:5
相关论文
共 29 条
[11]   SENSITIVITY ENHANCEMENTS FOR FLOW-INJECTION ANALYSIS INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION-SPECTROMETRY USING AN ONLINE PRECONCENTRATING ION-EXCHANGE COLUMN [J].
HARTENSTEIN, SD ;
RUZICKA, J ;
CHRISTIAN, GD .
ANALYTICAL CHEMISTRY, 1985, 57 (01) :21-25
[12]  
INCZEDY J, 1976, ANAL APPLICATIONS CO
[13]   AUTOMATION IN ELEMENT PRECONCENTRATION WITH CHELATING ION-EXCHANGERS - PLENARY LECTURE [J].
KNAPP, G ;
MULLER, K ;
STRUNZ, M ;
WEGSCHEIDER, W .
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1987, 2 (06) :611-614
[14]   DETERMINATION OF ALUMINUM LEVELS IN TEA AND COFFEE BY INDUCTIVELY COUPLED PLASMA OPTICAL-EMISSION SPECTROMETRY AND GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY [J].
KOCH, KR ;
POUGNET, MAB ;
DEVILLIERS, S .
ANALYST, 1989, 114 (08) :911-913
[15]  
Kotrly S., 1985, HDB CHEM EQUILIBRIA
[16]   ONLINE TRACE-METAL ENRICHMENT AND MATRIX-ISOLATION IN ATOMIC-ABSORPTION SPECTROMETRY BY A COLUMN CONTAINING IMMOBILIZED 8-QUINOLINOL IN A FLOW-INJECTION SYSTEM [J].
MALAMAS, F ;
BENGTSSON, M ;
JOHANSSON, G .
ANALYTICA CHIMICA ACTA, 1984, 160 (JUN) :1-10
[17]  
MASON B, 1966, PRINCIPLES GEOCHEMIS, P195
[18]  
MASSEY RC, 1988, ALUMINIUM FOOD ENV
[19]  
MINCZEWSKI J, 1982, SEPARATION PRECONCEN, P51
[20]  
MURAS Y, 1985, ANAL CHEM, V57, P1706