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Degradation of imazosulfuron in different soils—HPLC determination
Author(s) -
Morrica Patrizia,
Fidente Paola,
Seccia Serenella,
Ventriglia Mariacarla
Publication year - 2002
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.184
Subject(s) - chemistry , soil water , high performance liquid chromatography , chromatography , sulfonylurea , urea , chloride , acetonitrile , environmental chemistry , soil test , extraction (chemistry) , ecology , medicine , organic chemistry , insulin , biology , endocrinology
Imazosulfuron, 1‐(2‐chloroimidazo [1,2‐ a ] pyridin‐3‐ylsulfonyl)‐3‐(4,6‐dimethoxypyrimidin‐2‐yl)urea, is a new sulfonylurea herbicide applied once per growing season. It is highly active at low application levels and is used to control most annual and perennial broad‐leaf weeds and some grasses in cereal crop. In this work the degradation of imazosulfuron in four different soils was investigated under aerobic laboratory conditions to evaluate its environmental fate. Test soils were treated with this herbicide in acetonitrile to obtain a final concentration of 0.2 mg kg −1 (100 g ha −1 ), extracted with methylene chloride and analyzed by reversed‐phase liquid chromatography (RP‐HPLC) using a C 18 column coupled with UV detection. Recoveries of spiked soils ranged from 84.3 to 99.8% (RDS 0.0–4.9%; n = 4). The limits of quantitation ranged from 0.002 to 0.004 mg kg −1 . Imazosulfuron half‐life, t 1/2 , was calculated in each of the investigated soil. In aerobic conditions it ranged between 1 and 50 days. Copyright © 2002 John Wiley & Sons, Ltd.