title: Liquid chromatography coupled to molecular fluorescence with postcolumn UV sensitization for thimerosal and derivative compounds monitoring in environmental samples.
abstract: A HPLC coupled with molecular fluorescence (MF) spectrometry method for determination of thimerosal (THM, sodium ethylmercurythiosalicylate, C9H9HgNaO2S), and derivatives is proposed. A sensitization of MF was provoked by UV irradiation of analytes in a home-made photoreactor that served as interface between the LC column and MF spectrometer. This method is applied to determination of THM, ethyl mercury, and thiosalicylic acid in samples of pharmaceutical industry effluents, and waters of La Carolina and Jáchal rivers situated in the center-west side of San Luis city and in the east of San Juan city (Middle West, Argentine) where the effluents are dumped. The LODs calculated on basis of 3σ criterion were 1.8, 5, and 0.05 μmol/L for THM, ethyl mercury, and for thiosalicylic acid, respectively.
authors.affiliation: Instituto de Química de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, CCT-San Luis), San Luis, Argentina.|Área de Gestión en Calidad y Salud, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, San Luis, Argentina.
authors.forename: Gimena
authors.initials: G
authors.lastname: Acosta
authors.affiliation: Instituto de Química de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, CCT-San Luis), San Luis, Argentina.|Área de Química Analítica, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, San Luis, Argentina.
authors.forename: Sabier
authors.initials: S
authors.lastname: Torres
authors.affiliation: Instituto de Química de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, CCT-San Luis), San Luis, Argentina.|Área de Química Analítica, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, San Luis, Argentina.
authors.forename: Marcos
authors.initials: M
authors.lastname: Kaplan
authors.affiliation: Instituto de Química de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, CCT-San Luis), San Luis, Argentina.|Área de Química Analítica, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, San Luis, Argentina.
authors.forename: Liliana P
authors.initials: LP
authors.lastname: Fernández
authors.affiliation: Instituto de Química de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, CCT-San Luis), San Luis, Argentina.|Área de Farmacología y Toxicología, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, San Luis, Argentina.
authors.forename: Pablo H
authors.initials: PH
authors.lastname: Pacheco
authors.affiliation: Instituto de Química de San Luis, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, CCT-San Luis), San Luis, Argentina. ragil@unsl.edu.ar.|Área de Química Analítica, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, San Luis, Argentina. ragil@unsl.edu.ar.
authors.forename: Raúl A
authors.initials: RA
authors.lastname: Gil
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004784:Environmental Monitoring; D057230:Limit of Detection; D016014:Linear Models; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D013849:Thimerosal / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D013849:Thimerosal
keywords: Contaminated river waters; HPLC-UV-postcolumn photochemical sensitization; Molecular fluorescence; Pharmaceutic industry effluents; Thimerosal