Speciation of aluminium in tea infusions studied by size exclusion chromatography with detection by post-column reaction

被引：36

作者：

Flaten, AK ^{[1
]}

Lund, W ^{[1
]}

机构：

[1] UNIV OSLO, DEPT CHEM, N-0315 OSLO, NORWAY

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 1997年 / 207卷 / 01期

关键词：

size exclusion chromatography; tea infusions; aluminium species; post-column reaction; pyrocatechol violet;

D O I：

10.1016/S0048-9697(97)00239-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aluminium-organic species in tea infusions were studied by size exclusion chromatography, using a Superose 12 HR column, a mobile phase of 0.12 mol l(-1) tris(hydroxymethyl)aminomethane adjusted to pH 5.5 and detection by UV-visible spectrophotometry. Aluminium was detected after post-column reaction with pyrocatechol violet at 585 nm and the organic material was detected at 280 nn. Teas of different origin were analyzed; the results indicate that aluminium is bound to the same relatively narrow size-range of large organic molecules in the tea infusions, irrespective of the origin of the tea. (C) 1997 Elsevier Science B.V.

引用

页码：21 / 28

页数：8

共 27 条

[1]

BAXTER MJ, 1989, ALUMINIUM FOOD ENV, P77

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