Organophosphorus pesticide peaks separation
Posted: Mon Apr 05, 2010 2:48 pm
Good day everybody. Can anyone help me solve this problem in separating the peaks for organophosphorus pesticides.
Monocrotophos, quinalphos, pirimiphos-methyl, diazinon, dimethoate, phenthoate, malathion, fenitrothion, dichlorvos, prothiophos, parathion-methyl, trichlorfon, methamidophos, fenthion, profenofos, chlorpyrifos, sulfotep, acephate, azinphos-ethyl, triazophos.
I've tried various combinations of oven temperature programming, inlet temperature, detector temperature, and so on but to no success in separating all 20 peaks. So anybody have any idea on the best optimize GC parameters to separate these peaks? I'm still searching for the best optimization (columns, oven temperature programming [primary, secondary], inlet temperature, detector temperature) as I write this post
...
Really looking forward and appreciate any comments and suggestions from all of you. Thank you.
By the way, I'm using GC x GC (LECO/Agilent 7890) with FPD detector. Primary column = Rtx-5, secondary column = Rtx-17. Currently I just using the 1D mode.
Monocrotophos, quinalphos, pirimiphos-methyl, diazinon, dimethoate, phenthoate, malathion, fenitrothion, dichlorvos, prothiophos, parathion-methyl, trichlorfon, methamidophos, fenthion, profenofos, chlorpyrifos, sulfotep, acephate, azinphos-ethyl, triazophos.
I've tried various combinations of oven temperature programming, inlet temperature, detector temperature, and so on but to no success in separating all 20 peaks. So anybody have any idea on the best optimize GC parameters to separate these peaks? I'm still searching for the best optimization (columns, oven temperature programming [primary, secondary], inlet temperature, detector temperature) as I write this post
...Really looking forward and appreciate any comments and suggestions from all of you. Thank you.
By the way, I'm using GC x GC (LECO/Agilent 7890) with FPD detector. Primary column = Rtx-5, secondary column = Rtx-17. Currently I just using the 1D mode.