Identification and Quantification of Pesticides in Environmental Waters With Solid Phase Microextraction and Analysis Using Field-Portable Gas Chromatography-Mass Spectrometry
Abstract
A solid-phase microextraction (SPME) and gas-chromatography-mass spectrometry (CG-MS) sampling and analysis method was developed for 1-Naphthyl methylcarbamate (Carbaryl) and gamma-benzenehexachloride (gamma-BHC) in water. A 15 minute sampling time of 40 degrees centigrade with a carbowax/divinylbenzene-coated SPME fiber for carbaryl and a polydimethylsiloxane-coated SPME fiber for lindane was employed. This allowed detection of carbaryl at concentrations in environmental water sources that included modeled ground water, simulated post-production water, and raw surface water while using the MS detector in full scan mode. The method was also successfully used with a field-portable CG-MS instrument using a low thermal mass, resistively heated column (LTM/RHC). Total analysis time using the field-portable CG-MS system was 30 minutes. The method avoids the use of complex sample preparation steps and thereby enhances analyst safety through the elimination of the need to handle solvents in the field environment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 10, 2004
- Accession Number
- ADA434815
Entities
People
- Michael J. Nack
Organizations
- Uniformed Services University of the Health Sciences