By Michael T on Tuesday, February 4, 2003 - 11:08 am:
I am trying to find the best method for analysis of oxadiazon and dithiopyr on the GC. The pesticides are contained in a sample of soil and I'm using soxhlet extraction with a 1:1 ratio of Dichloromethane and Acetone. There is no concentration on the GC analysis after a spiked sample has been ran. Does anyone know of a better solvent ratio?
By Anonymous on Wednesday, February 5, 2003 - 06:15 am:
Are you evaporating the solvent to a reduced volume or are you injecting the extract directly? What detector are you using? What are the analytical conditions? There is not enough information given to attempt an answer.