NDLI: A Method for Determination of Imazapic and Imazethapyr Residues in Soil Using an Ultrasonic Assisted Extraction and LC-MS/MS

Content Provider	Springer Nature Link
Author	Assalin, Márcia Regina Queiroz, Sonia C. N. Ferracini, Vera L. Oliveira, Taciana Vilhena, Eder Mattos, Maria Laura T.
Copyright Year	2014
Abstract	At least 52 % of the planted rice area in Rio Grande do Sul, a major rice producing state in Brazil, employs Clearfield® production system, corresponding to 580,000 ha of cultivated area. To grow rice with Clearfield® technology, producers combine imazethapyr and imazapic herbicides. However, these herbicides leave residual activity in soil; consequently, the repeated application of imazethapyr and imazapic on Brazilian Clearfield® rice fields has increased these herbicides persistence in treated soils. In this study, a method has been developed for removal and quantification of imazethapyr and imazapic residues in soil through ultrasonic assisted extraction using methanol–phosphoric acid aqueous solution (pH 2.0). The detected response was linear for both herbicides within the range of 0.25–5 ng mL−1 with correlations coefficients >0.99. The quantification limit was limit of quantification 0.2 µg Kg−1 for both pesticides. The good recovery rate from all pesticides, which ranges between 70 % and 120 %, demonstrates the method’s validity.
Starting Page	360
Ending Page	364
Page Count	5
File Format	PDF
ISSN	00074861
Journal	Bulletin of Environmental Contamination and Toxicology
Volume Number	93
Issue Number	3
e-ISSN	14320800
Language	English
Publisher	Springer US
Publisher Date	2014-07-10
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Clearfield production system Imidazolinone Residue analysis Soil LC-MS/MS Pollution Environmental Health Ecotoxicology Soil Science & Conservation Environmental Chemistry Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Pollution Medicine Toxicology

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