Indirect Anodic Stripping Voltammetric Determination of Tl(I) and Tl(III) in the Baltic Seawater Samples Enriched in Thallium Species

The sensitive method DPASV with HMDE in the presence of DTPA and acetic buffer was used for determination of Tl(I) and Tl(III) in spiked seawater sample. The proposed method was based on the appropriate chemical conservation of Tl speciation. To determine the total amount of Tl, an addition of ascor...

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Published in:Electroanalysis (New York, N.Y.) N.Y.), 2011-03, Vol.23 (3), p.605-610
Main Authors: Krasnodębska-Ostręga, Beata, Pałdyna, Joanna, Wawrzyńska, Marta, Stryjewska, Ewa
Format: Article
Language:English
Subjects:
Anodic stripping
Ascorbic acid
Buffers (chemistry)
Conservation
DTPA
Inductively coupled plasma
Sea water
Seawater
Speciation
Stability
Thallium speciation
Voltammetric determination
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container_title Electroanalysis (New York, N.Y.)
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creator Krasnodębska-Ostręga, Beata
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description The sensitive method DPASV with HMDE in the presence of DTPA and acetic buffer was used for determination of Tl(I) and Tl(III) in spiked seawater sample. The proposed method was based on the appropriate chemical conservation of Tl speciation. To determine the total amount of Tl, an addition of ascorbic acid to sub‐sample was necessary, but to determine Tl(I) to the second sub‐sample addition of DTPA was needed. Various factors influencing the stability of Tl(III) and electrochemical parameters were investigated. The quantification limit of 1.8 ng mL−1 Tl(I) was found for 8 min preconcentration. The procedure was validated using recovery study and HPLC ICP MS determinations.
doi_str_mv 10.1002/elan.201000399
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1521-4109
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source Wiley
subjects Anodic stripping
Ascorbic acid
Buffers (chemistry)
Conservation
DTPA
Inductively coupled plasma
Sea water
Seawater
Speciation
Stability
Thallium speciation
Voltammetric determination
title Indirect Anodic Stripping Voltammetric Determination of Tl(I) and Tl(III) in the Baltic Seawater Samples Enriched in Thallium Species
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