Peacock plasma, a useful cholinesterase source for inhibition residue analysis of insecticidal carbamates

The plasma cholinesterase of the peacock was found to be particularly sensitive to inhibition by certain insecticidal carbamates. This property was made use of in an automated procedure, which was originally developed for the analysis of enolphosphates. When human plasma solution was replaced by diluted peacock plasma, the limit of detection of these carbamates was lowered by a factor of ten. The principle of a simple clean-up procedure as well as recovery values and the limit of detection are given for the carbamate C-8353.