Standard Chain of Custody
BottleType/Preservation/Holding Time Chart UPDATED
Pyrethroid Pesticide Analysis by Negative Chemical Ionization Gas Chromatography with Mass Spectrometer Detector operated in the Selected Ion Monitoring mode (NCI GCMS SIM)
This NCI GCMS SIM technique allows us to achieve about ten times better sensitivity with increased selectivity compared to previous methods. At present we have extract cleanup steps that have proven helpful in tests of wastewater treatment plant effluent spiked at low levels. We offer this information as a progress report on the state of the method development. If you choose to send samples in for analyses we ask that you supply at least two additional one liter bottles for matrix spike and matrix spike duplicate sample volumes to help us trend the method’s performance in matrix.