Abstract:
This work includes two major parts.
The first part of the work concentrated on the studies of the application of the highperfonnance
liquid chromatography-particle beam interface-mass spectrometry system of
some pesticides. Factors that have effects on the detection sensitivity were studied. The
linearity ranges and detection limits of ten pesticides are also given in this work.
The second part of the work concentrated on the studies of the reduction phenomena of
nitro compounds in the HPLC-PB-MS system. Direct probe mass spectrometry and gas
chromatography-mass spectrometry techniques were also used in the work. Factors that
have effects on the reduction of the nitro compounds were studied, and the possible
explanation is proposed.
The final part of this work included the studies of reduction behavior of some other
compounds in the HPLC-PB-MS system, included in them are: quinones, sulfoxides, and
sulfones.
