PMID- 15665972 OWN - NLM STAT- MEDLINE DCOM- 20050913 LR - 20121115 IS - 0003-2654 (Print) IS - 0003-2654 (Linking) VI - 130 IP - 2 DP - 2005 Feb TI - Determination of phthalates in water using fiber introduction mass spectrometry. PG - 188-92 AB - Fiber introduction mass spectrometry (FIMS)-a direct coupling of SPME and MS-using selective ion monitoring (SIM) was used to detect and quantify dimethylphthalate (DMP), diethylphthalate (DEP) and dipropylphthalate (DPP) in mineral water. In FIMS, a chromatographic silicone septum is the only barrier between ambient and the high-vacuum mass spectrometer, permitting direct introduction of the SPME fiber into the ionization region of the equipment. After their thermal desorption and ionization and dissociation, the extracted phthalates are detected and quantitated by MS. Three types of SPME fibers were screened for best analyte sorption/desorption behaviors: 100 microm polydimethylsiloxane (PDMS), 65 microm polydimethylsiloxane/divinylbenzene (PDMS/DVB) and 65 microm Carbowax/divinylbenzene (CW/DVB). The PDMS/DVB and CW/DVB fibers were then evaluated for precision, and quantitative figures of merit were assessed for extractions using the PDMS/DVB fiber, which displayed the best overall performance. FIMS with the PDMS/DVB fiber allows simple extraction and MS detection and quantitation of DMP in water with good linearity and precision, and at concentrations as low as 3.6 microg L(-1). The LD and LQ of FIMS are below the maximum phthalate concentration allowed by the USEPA for drinking water (6 microg L(-1)). FAU - Silva, Rogerio C AU - Silva RC AD - Institute of Chemistry, State University of Campinas (Unicamp), CP 6154, 13083-974 Campinas, Sao Paulo, Brazil. FAU - Meurer, Eduardo C AU - Meurer EC FAU - Eberlin, Marcos N AU - Eberlin MN FAU - Augusto, Fabio AU - Augusto F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20041206 PL - England TA - Analyst JT - The Analyst JID - 0372652 RN - 0 (Mineral Waters) RN - 0 (Phthalic Acids) RN - 0 (Water Pollutants, Chemical) RN - 0 (fiberglass) RN - 6O7F7IX66E (phthalic acid) SB - IM MH - Glass MH - Mass Spectrometry/instrumentation/methods MH - Mineral Waters/*analysis MH - Phthalic Acids/*analysis MH - Water Pollutants, Chemical/*analysis EDAT- 2005/01/25 09:00 MHDA- 2005/09/15 09:00 CRDT- 2005/01/25 09:00 PHST- 2005/01/25 09:00 [pubmed] PHST- 2005/09/15 09:00 [medline] PHST- 2005/01/25 09:00 [entrez] AID - 10.1039/b411708e [doi] PST - ppublish SO - Analyst. 2005 Feb;130(2):188-92. doi: 10.1039/b411708e. Epub 2004 Dec 6.