Direct determination of bismuth, indium and lead in sea water by Zeeman ETAAS using molybdenum containing chemical modifiers

• Published in: Talanta (Oxford) Vol. 49; no. 1; pp. 135 - 142
• Main Authors: Acar, Orhan, Türker, A.Rehber, Kılıç, Ziya
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.06.1999; Oxford Elsevier
• Subjects: Analysis methods; Analytical chemistry; Applied sciences; Bismuth; Chemical modifiers; Chemistry; ETAAS–Zeeman background correction; Exact sciences and technology; Indium; Lead; Natural water pollution; Pollution; Sea water; Spectrometric and optical methods; Water treatment and pollution; Bismuth; Lead; Chemical modifiers; Indium; Sea water; ETAAS–Zeeman background correction; Water; Pyrolysis; Tartaric acid; Molybdenum; Recovery; Zeeman effect; Chemical modification; Accuracy; Thermoelectric atomization; Seawater; Atomic absorption spectrometry
• ISSN: 0039-9140; 1873-3573
• DOI: 10.1016/S0039-9140(98)00358-0

Direct determination of Bi, In and Pb in sea water samples has been carried out by ETAAS with Zeeman background correction using molybdenum containing chemical modifiers and tartaric acid as a reducing agent. Maximum pyrolysis temperatures and the effect of mass ratios of the mixed modifier components on analytes have been investigated. Mo+Pd+TA or Mo+Pt+TA mixture was found to be powerful for the determination of 50 μg l −1 of Bi, In and Pb spiked into synthetic and real sea waters. The accuracy and precision of the determination were thereby enhanced. The recoveries of analytes spiked were 94–103% with Mo+Pd+TA or Mo+Pt+TA and they are only 49–61% without modifier.