Separation and detection of 23 organochlorine pesticides and 4 synthetic pyrethroids by GC-MS

Instrument Type: GCMS

The Thermo Scientific Trace 1310 ISQ system is applied for the direct injection of extracted organochlorine pesticide and pyrethroid samples. Separation is performed on a Thermo Scientific TraceGOLD TG-5SilMS column with MS SIM detection.

Targeted analysis of 6 pesticides in milk utilising a QuEChERS sample preparation approach and GC-MS detection

Instrument Type: GCMS

The Thermo Scientific Trace 13xx series GC with ISQ is applied for the detection of pesticides in milk. Sample analysis was performed utilising a QuEChERS extraction/cleanup workflow followed by separation on a Thermo Scientific TraceGOLD TG-5SilMS 30m x 0.25mm, 0.25µm column with MS detection.

The importance of autosampler vial selection in the GC-MS analysis of pyrethroid pesticides at low concentration

Instrument Type: GCMS

The selection of the correct autosampler vial type is vital to the success of analyzing pyrethroid pesticides at low levels. A method for the determination of pyrethroids at 0.1 ng/mL was developed using solid phase extraction (SPE) for pre-concentration with subsequent analysis by GC with PTV simulated on-column injection. Careful selection of the autosampler vial type was needed to minimize adsorption effects.