Speciation analysis of thallium in water samples after separation/ preconcentration with the EmporeTM chelating disk
Artikel i vetenskaplig tidskrift, 2011

A simple, reliable and novel solid phase extraction procedure using the Empore chelating disk has been developed for determination of Tl(I) and Tl(III) in environmental water samples by electrothermal atomic absorption spectrometry (ETAAS). The influence of humic acids on separation/preconcentration of thallium species with the Empore chelating disk is investigated. The preconcentration factor and detection limit are 500 and 5 ng L-1, respectively. The recoveries are in the range 93-103% for mineral, pond, sea, snowmelt, waste waters at 28-500 ng L-1 Tl and in the range 82-112% for river waters at 18-28 ng L-1 Tl.

Speciation analysis

Humic acids

Absorption spectroscopy

Water absorption

Chelation

Solid-phase extraction

Pre-concentration

Water analysis

River water

Sewage

Humic acid

Interferences

Thallium speciation

Atomic absorption spectrometry

Seawater

Water samples

Thallium

Extraction

Environmental water samples

Electrothermal atomic absorption spectrometry

ETAAS

Snowmelt

Organic acids

Detection limits

Chelating disks

Empore chelating disk

Wastewater

Iodine

Biological materials

Författare

S. Arpadjan

Sofijski universitet

Pavleta Knutsson

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Jesper Knutsson

Chalmers, Bygg- och miljöteknik, Vatten Miljö Teknik

International Journal of Environmental Analytical Chemistry

0306-7319 (ISSN) 1029-0397 (eISSN)

Vol. 91 1088-1099

Drivkrafter

Hållbar utveckling

Ämneskategorier

Analytisk kemi

Miljövetenskap

DOI

10.1080/03067310903359476