TY - RPRT TI - Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group--Update and additions to the determination of chloroacetanilide herbicide degradation compounds in water using high-performance liquid chromatography/mass spectrometry AU - E.A. Lee AU - J.L. Kish AU - L.R. Zimmerman AU - E. Thurman PY - 2001 DO - 10.3133/ofr0110 UR - https://pubs.usgs.gov/publication/ofr0110 ID - ofr0110 ER -