The need for the reliable determination of
organophosphates and carbamates has led to the
development of a number of sophisticated methods
that offer high selectivity and sensitivity for
their identification and quantification (HPLCUV-
DAD, GC-MS). These methods require time
consuming sample preparation with application of
different extraction methods using toxic organic
solvents. However, in laboratories where large
numbers of samples must be processed rapidly, a
method with sufficient sensitivity that can be used
for preliminary screening is a good alternative [3].