title: Analysis of 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone (MX) and its brominated analogues in chlorine-treated water by gas chromatography coupled to triple quadrupole tandem mass spectrometry (GC-QqQ-MS/MS).
abstract: A simple, selective and sensitive method for the analysis of the strong mutagen 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone (MX) and its brominated analogues (BMXs) in chlorine-treated water has been developed. The method is based on gas chromatography coupled to triple quadrupole tandem mass spectrometry (GC-QqQ-MS/MS), previous liquid-liquid extraction (LLE) of a smaller sample volume compared to other methods and on-line derivatization with a silylation reactive. GC-QqQ-MS/MS has been raised as an alternative easier to perform than gas chromatography coupled to high resolution mass spectrometry (GC-HRMS) for the analysis of MX and BMXs, and it allows to achieve low LODs (0.3 ng/L for MX and 0.4-0.9 ng/L for BMXs). This technique had not been previously described for the analysis of MX and BMXs. Quality parameters were calculated and real samples related to 3 drinking water treatment plants (DWTPs), tap water and both untreated and chlorinated groundwater were analyzed. Concentrations of 0.3-6.6 ng/L for MX and 1.0-7.3 ng/L for BMXs were detected. Results were discussed according to five of the main factors affecting MX and BMXs formation in chlorine-treated water (organic precursors, influence of bromide ions, evolution of MX and BMXs in the drinking water distribution system, groundwater chlorination and infiltration of water coming from chlorination processes in groundwater).
authors.affiliation: Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research, CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: Carles
authors.initials: C
authors.lastname: Planas
authors.affiliation: Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research, CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: Francesc
authors.initials: F
authors.lastname: Ventura
authors.affiliation: Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research, CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: josep.caixach@cid.csic.es.
authors.forename: Josep
authors.initials: J
authors.lastname: Caixach
authors.affiliation: AGBAR, Aigües de Barcelona S.A., C/General Batet 5-7, 08028 Barcelona, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Martín
authors.affiliation: AGBAR, Aigües de Barcelona S.A., C/General Batet 5-7, 08028 Barcelona, Spain.
authors.forename: M Rosa
authors.initials: MR
authors.lastname: Boleda
authors.affiliation: AGBAR, Aigües de Barcelona S.A., C/General Batet 5-7, 08028 Barcelona, Spain.
authors.forename: Miquel
authors.initials: M
authors.lastname: Paraira
mesh_terms: D002713:Chlorine / Q000737:chemistry; D002849:Chromatography, Gas; D004202:Disinfectants / Q000737:chemistry; D060766:Drinking Water / Q000032:analysis* / Q000737:chemistry; D005663:Furans / Q000032:analysis*; D060587:Groundwater / Q000032:analysis* / Q000737:chemistry; D054879:Halogenation; D009153:Mutagens / Q000032:analysis*; D053719:Tandem Mass Spectrometry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification
chemical_list: D004202:Disinfectants; D060766:Drinking Water; D005663:Furans; D009153:Mutagens; D014874:Water Pollutants, Chemical; D002713:Chlorine; C054121:3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone
keywords: BMXs; DWTPs; GC-QqQ-MS/MS; MX; Triple quadrupole: chlorine-treated water