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A New Sw-846 Method: Micro-Liquid Chromatography-Electrospray/Ion Trap Mass Spectrometry as Applied to the Detection and Identification of Organotins Method 8323

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Abstract:There is a growing body of evidence that humans and other animals (terrestrial and marine) are being exposed continually to potentially harmful species of organotins. One possible route of environmental exposure in the U.S. to organotins (specifically dibutyltin and triphenyltin) is via fresh surface waters. A unique methodology (developed in-house at EPA-Las Vegas) was used for specific detection (speciation) and quantitation of the organotins. Method 8323 is the one of the newest EPA SW-846 methods and is the first EPA-approved method for organotins. This green-chemistry method uses solid-phase extraction discs, coupled with @L-liquid chromatography-electrospray/ion trap mass spectrometry (u-LC-ES/ITMS) as the detection method for the determination of organotins (as cations) in waters. This technique would also be applicable to ES-quadrupole mass spectrometry (ES-MS). The following compounds can be determined: tributyltin chloride, dibutyltin dichloride, monobutyltin trichloride, triphenyltin chloride, diphenyltin dichloride, monophenyltin trichloride. Applications of this method have been directed towards detecting organotins leaching from PVC pipe, natural waters, and an industrial spill in Region 4.
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Citation:Joneslepp, T. A New Sw-846 Method: Micro-Liquid Chromatography-Electrospray/Ion Trap Mass Spectrometry as Applied to the Detection and Identification of Organotins Method 8323. Presented at National Environmental Monitoring Conference (NEMC), Crystal City, VA, July 21-24, 2003.
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Contact: Chris Siebert - (702) 798-2234 or siebert.christopher@epa.gov
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Division: Environmental Sciences Division
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Branch: Environmental Chemistry Branch
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Product Type: Abstrct/Oral
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Presented: 07/21/2003
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Related Entries:
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Bullet Item Advances in Sampling, Separation, Detection and Identification That Address Unmet Needs of Oswer and the Regions
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Last Updated on Monday, October 22, 2007
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