TY - RPRT TI - Determination of glyphosate, its degradation product aminomethylphosphonic acid, and glufosinate, in water by isotope dilution and online solid-phase extraction and liquid chromatography/tandem mass spectrometry AU - Michael T. Meyer AU - Keith A. Loftin AU - Edward A. Lee AU - Gary H. Hinshaw AU - Julie E. Dietze AU - Elisabeth A. Scribner PY - 2009 DO - 10.3133/tm5a10 UR - https://pubs.usgs.gov/publication/tm5A10 ID - tm5A10 ER -