Lanthanide luminescence quenching as a detection method in ion chromatography. Chromate in surface and drinking water

M SCHREURS, G. W. Somsen, C. Gooijer, N. H. Velthorst, R W Frei

Research output: Contribution to JournalArticle

Abstract

Dynamic quenching of Eu(IIl) and TB(III) luminescence by inorganic anions as a detection method in ion chromatography was investigated. To obtain a high luminescence intensity lanthanide(III) complexes are formed with ligands which make indirect excitation of the ions possible. Only a few anions (e.g. nitrite, chromate) induce efficient dynamic luminescence quenching. Chromate is an efficient quencher of TB-acac luminescence. Samples of tap water and surface water spiked with chromate were injected into a high-performance liquid chromatographic system with post-column addition of the luminescent complex. In this way a detection limit of 1.1 · 10-37 M (13 ppb) of chromate could be obtained.

Original languageEnglish
Pages (from-to)351-359
Number of pages9
JournalJournal of Chromatography A
Volume482
Issue number2
DOIs
Publication statusPublished - 1 Dec 1989

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