S. Stout, A. daCunha, J. Fletcher
Sep 1, 1996
Citations
0
Influential Citations
2
Citations
Journal
Journal of AOAC International
Abstract
Imazapyr, an imidazolinone class herbicide, was developed recently for weed control in imidazolinone-tolerant corn. Current methods for determining imidazolinone herbicides in crops involve laborious, time-consuming cleanup procedures after extraction. We developed an extremely simple cleanup procedure for imazapyr in corn commodities after extraction with acidic acetone-water by using gas chromatography/mass spectrometry with electron capture negative ion chemical ionization for final detection. Method sensitivity was 50 ppb, with controls showing <5 ppb. Average recoveries from corn forage, fodder, and grain were 98, 106, and 101%, respectively.