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Speciation analysis of thallium in water samples after separation/ preconcentration with the EmporeTM chelating disk

S. Arpadjan ; Pavleta Petrova (Institutionen för teknisk fysik, Mikroskopi och mikroanalys) ; Jesper Knutsson (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik)
International Journal of Environmental Analytical Chemistry (0306-7319). Vol. 91 (2011), 11, p. 1088-1099.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Empore chelating disk, ETAAS, Humic acids, Interferences, Thallium speciation, Water analysis, Chelating disks, Detection limits, Electrothermal atomic absorption spectrometry, Environmental water samples, Humic acid, Pre-concentration, River water, Snowmelt, Solid-phase extraction, Speciation analysis, Water samples, Absorption spectroscopy, Atomic absorption spectrometry, Biological materials, Chelation, Iodine, Organic acids, Seawater, Sewage, Thallium, Wastewater, Water absorption, Extraction



Denna post skapades 2011-12-13. Senast ändrad 2014-09-17.
CPL Pubid: 150017

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Mikroskopi och mikroanalys (2005-2012)
Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik (2005-2017)

Ämnesområden

Hållbar utveckling
Analytisk kemi
Tungmetaller och övriga metaller
Miljötoxikologi

Chalmers infrastruktur