Your browser doesn't support javascript.
loading
Simultaneous analysis of haloacetonitriles, haloacetamides and halonitromethanes in chlorinated waters by gas chromatography-mass spectrometry.
Carter, Rhys A A; Liew, Deborah S; West, Nigel; Heitz, Anna; Joll, Cynthia A.
Afiliación
  • Carter RAA; Curtin Water Quality Research Centre (CWQRC), Chemistry, School of Molecular and Life Sciences, Curtin University, Perth, WA, Australia.
  • Liew DS; Curtin Water Quality Research Centre (CWQRC), Chemistry, School of Molecular and Life Sciences, Curtin University, Perth, WA, Australia.
  • West N; ChemCentre, Perth, WA, Australia.
  • Heitz A; School of Civil and Mechanical Engineering, Curtin University, Perth, WA, Australia.
  • Joll CA; Curtin Water Quality Research Centre (CWQRC), Chemistry, School of Molecular and Life Sciences, Curtin University, Perth, WA, Australia. Electronic address: C.Joll@curtin.edu.au.
Chemosphere ; 220: 314-323, 2019 Apr.
Article en En | MEDLINE | ID: mdl-30590297
Nitrogenous classes of disinfection by-products (DBPs), such as haloacetamides (HAAms), haloacetonitriles (HANs) and halonitromethanes (HNMs), while generally present at lower concentrations in disinfected waters than carbonaceous DBPs, such as trihalomethanes or haloacetic acids, have been shown to be more detrimental to human health. While several methods have been shown to be suitable for the analysis of some nitrogenous DBPs (N-DBPs) in disinfected waters, many are unable to quantify HAAms, the most detrimental to health of these three N-DBP classes. Here, we report the first method for the simultaneous analysis of twenty-five N-DBPs (nine HANs, nine HNMs and seven HAAms) in disinfected waters using liquid-liquid extraction followed by gas chromatography-mass spectrometry. The use of a programmable temperature vaporiser injector minimises degradation of the thermally labile HNMs, while avoiding the concomitant decreases in HANs and HAAms which occur when using lower injector temperatures. Extraction parameters, including sample pH, solvent volume, salt addition and sample pre-concentration, were investigated to determine the optimal conditions across all target N-DBPs. Good detection limits were achieved for all analytes (0.8-1.7 µg L-1) and both laboratory and instrumental runtimes were significantly reduced compared to previous methods. The method was validated for the analysis of N-DBPs in drinking, swimming pool and spa waters, and concentrations of up to 41 µg L-1 of some N-DBPs were measured in some pools.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Acetonitrilos / Contaminantes Químicos del Agua / Purificación del Agua / Etano / Acetamidas / Cromatografía de Gases y Espectrometría de Masas / Nitrocompuestos Límite: Humans Idioma: En Revista: Chemosphere Año: 2019 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Acetonitrilos / Contaminantes Químicos del Agua / Purificación del Agua / Etano / Acetamidas / Cromatografía de Gases y Espectrometría de Masas / Nitrocompuestos Límite: Humans Idioma: En Revista: Chemosphere Año: 2019 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Reino Unido