Multiresidue method for determination of post-emergence herbicides in water by HPLC/ESI/MS in positive lonization mode
Article Abstract:
Post-emergence (POE) herbicides are foliage-applied products utilized to control weeds that have started to affect the developing crop. A sensitive and specific multiresidue method has been developed, based or reversed-phase liquid chromatograph/mass spectrometry, with an electrospray interface (IC/ESI/MS), for identifying 15 of most representative compounds of a new type of POE herbicides in water samples. The method involved requires passing 2 L of groundwater and 4 L of drinking water samples, respectively, through a 0.5 g graphitized carbon black (GCB) extractor cartridge.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Automated procedure for extraction of metolachlor from soil
Article Abstract:
An automated robotic procedure was developed to extract metolachlor efficiently from soil. The procedure was demonstrated on a fine-loamy, mixed Udic Haploboroll using existing robotic stations. Results have indicated that duration of equilibration and initial soil pH have no substantial effect on the recovery of metolachlor. Metolachlor recovery, however, is slightly affected by the temperature during perfusion gas interaction. The automated robotic procedure also proved cost effective with regards to reagent cost and reduces hazardous waste generation by 67%.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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Metolachlor and Alachlor Breakdown Product Formation Patterns in Aquatic Field Mesocosms
Article Abstract:
Researchers in Kansas added herbicides to outdoor water tanks simulating various naturally-occurring ecosystems to determine what chemicals result from their breakdown. Tables and figures accompany the article.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1999
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