Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 106, Issue -, Pages 79-84Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2014.09.011
Keywords
Thimerosal, Ethylmercury and mercury determination; Pharmaceutical industry effluents; Liquid chromatography; UV-CV-AFS
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Funding
- Insituto de Quimica de San Luis
- Universidad Nacional de San Luis [PROICO UNSL-2-1512]
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) [PIP-112 201101 00123]
- Agencia Nacional de Pomocion Cientifica y Tecnologica (ANPCyT) [PICT-2010-1899]
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A high performance liquid chromatography coupled with atomic fluorescence spectrometry method for the determination of thimerosal (sodium ethylmercury thiosalicylate, C9H9HgNaO2S), ethylmercury, and inorganic mercury is proposed. Mercury vapor is generated by the post-column reduction of mercury species in formic acid media using UV-radiation. Thimerosal is quantitatively converted to Hg(II) followed by the reduction of Hg(II) to Hg(0). This method is applied to the determination of thimerosal (THM), ethylmercury (EtHg) and inorganic Hg in samples of a pharmaceutical industry effluent, and in waters of the San Luis River situated in the west side of San Luis city (Middle West, Argentine) where the effluents are dumped. The limit of detections, calculated on the basis of the 3 sigma criterion, where 0.09, 0.09 and 0.07 mu g L-1 for THM, EtHg(II) and for Hg(II), respectively. Linearity was attained from levels close to the detection limit up to at least 100 mu g L-1. (C) 2014 Elsevier B.V. All rights reserved.
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