Procedure for the determination of 2,4‐D and dicamba in inhalation, dermal, hand‐wash, and urine samples from spray applicators

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Abstract
Analytical procedures for the simultaneous determination of residues of 2,4-D and dicamba from polyurethane foam plug air samplers, ethylene glycol impregnated glass-fiber filter paper dermal samplers, 1% NaHCO3 hand wash solution and workers'' urine were presented. Residues were derivatized with diazomethane and quantitated using electron capture gas chromatography. Recoveries were > 80% at the limit of detection in all substrates. The limits of detection for both herbicides were 0.1 .mu.g/foam plug and 0.5 .mu.g/filter paper, and in the urine, 1.7 .mu.g/100 ml and 5.0 .mu.g/100 for dicamba and 2,4-D, respectively.