Pesticide Residue Methods





Category Others
Class Name Pesticide Specific Enforcement Method, Clethodim
Method Title The Determination of Clethodim Residues in Crops, Chicken and Beef Tissues, Milk, and Eggs Valent USA Method RM 26B 2.
Method Date 1990/08/15
Method Type Quantitative
Scope and Application For analysis of clethodim and its metabolites in crop and animal matrices. Should be adaptable to most vegetable matrices.
Method Summary This analytical method determines the residues of clethodim and its metabolites containing the 2 cyclohexen 1 one moiety. The total residue is expressed in clethodim equivalents. Briefly, the method involves extraction with methanol and/or water, followed by clean up with alkaline precipitation and acidic back extraction, oxidation to a dicarboxylic acid, derivatization to the dimethyl ester, further clean up by 1iquid liquid partitioning and measurement of the pentanedioic acid dimethyl esters by gas chromatography using a flame photometric detector in the sulfur mode.
Applicable Concentration Range Estimated LOQ: 0.05 mg/Kg
QC Requirements See Attached Method
Method Performance/Validation See Attached Method
Method Source U.S. EPA
Method SOP PDF icon SOP 
Citation VALENT U.S.A. CORPORATION, 1333 NORTH CALIFORNIA BLVD., WALNUT CREEK, CA. 94596 Method: RM-26B-2