Speciation analysis of organomercurial compounds in Fish Tissue by capillary gas chromatography coupled to microwave-induced plasma atomic emission detection

• Main Authors: Dorfe Díaz, Miguel Murillo*, Nereida Carrión, Manuel Ríos
• Format: Article
• Language: English
• Published: Universidad de Los Andes 2008-01-01
• Series: Avances en Química
• Subjects: Organomercurial compounds; speciation analysis; fish tissue; capillary gas chromatography; microwave-induced plasma emission spectrometry; surfatron resonance cavity.
• Online Access: http://123456789/26068/1/articulo4.pdf
• ISSN: 1856-5301

This paper describes a novel approach for analysis of mercury speciation in fish using gas chromatography coupled with microwave-induced plasma optical emission spectrometry (GC-MIP-OES) in surfatron resonant cavity. Sample treatment was based on quantitative leaching of mercury species from fish tissue with ultrasound-assisted acid-toluene extraction. The extracted mercury species analyzed with GC-MIP-OES attained detection limits of 5 and 9 pg for methylmercury (MeHg) and ethylmercury (EtHg), respectively. A complete chromatogram could be completed in 1.5 min. MeHg values obtained with GC-MIP-OES were matched with organic mercury values obtained with selective reduction cold vapour- atomic absorption spectrometry (CV-AAS).