Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of volatile organic compounds in water by purge and trap capillary gas chromatography/mass spectrometry
2016 ◽
2004 ◽
2016 ◽
1991 ◽
Vol 555
(1-2)
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pp. 297-301
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2001 ◽
2003 ◽
2018 ◽