Organic Geochemistry Research Laboratory
Gas Chromatography/Mass Spectrometry (GC/MS)
Gas chromatography/mass spectrometry is an analytical method by which a sample is
vaporized and separated into individual organic compounds. These compounds then are
simultaneously ionized and fragmented in a vacuum by means of electron bombardment.
Each compound has a unique spectrum, providing identification.
GC/MS analyses performed by the Organic Geochemistry Research Laboratory are completed on a custom request basis.
The laboratory code is indicated in parentheses after the method description.
- Geosmin, MIB - Taste and Odor (GCG)
Selected GC/MS References
- Kish, J.L., Thurman, E.M., Scribner, E.A., and Zimmerman, L.R., 2000,
Methods of analysis by the U.S.
Geological Survey Organic Geochemistry Research Group--Determination of selected
herbicides and their degradation products in water using solid-phase extraction
and gas chromatography/mass spectrometry: U.S. Geological Survey Open-File
Report 00-385, 13 p.
- Meyer, M.T., Mills, M.S., and Thurman, E.M., 1993,
extraction of herbicides from water for gas chromatographic-mass spectrometric
analysis: Journal of Chromatography, v. 629, p. 55-59.
- Thurman, E.M., Meyer, M.T., Pomes, M., Perry, C.A., and Schwab, A.P., 1990,
assay compared with gas chromatography/mass spectrometry for the determination of
triazine herbicides in water: Analytical Chemistry, v. 62, p. 2043-2048.
- Zimmerman, L.R., and Thurman, E.M., 1999,
Method of analysis by the U.S.
Geological Survey Organic Geochemistry Research Group--Determination of triazine
and chloroacetanilide herbicides in water by solid-phase extraction and
capillary-column gas chromatography/mass spectrometry with selected-ion
monitoring: U.S. Geological Survey Open-File Report 98-634, 21 p.
- Thurman, E.M., Zimmerman, L.R., Aga, D.S., and Gilliom, R.J., 2001,
Regional Water-Quality Analysis of 2,4-D and
Dicamba in River Water using Gas Chromatography-Isotope Dilution Mass Spectrometry,
Intern. J. Environ. Anal. Chem., v. 79(3), p. 185-198.
- Zimmerman, L.R., Strahan, A.P., and Thurman, E.M., 2001,
Method of Analysis and
Quality-Assurance Practices by the U.S. Geological Survey Organic Geochemistry
Research Group--Determination of Four Selected Mosquito Insecticides and a
Synergist in Water Using Liquid-Liquid Extraction and Gas Chromatography/Mass
Spectrometry: U.S. Geological Survey Open-File Report 01-273, 11 p.
- Zimmerman, A.C. Ziegler, and E.M. Thurman, 2002,
Method of Analysis and Quality-Assurance Practices
by U.S. Geological Survey Organic Geochemistry Research Group--Determination of
Geosmin and Methylisoborneol in Water Using Solid-Phase Microextraction and Gas
Chromatography/Mass Spectrometry: U.S. Geological Survey Open-File Report 02-337, 12 p.