Diquat and Paraquat, free 2,2’-bipyridyl

 

Content Handbook H

 

Outline of method

The dimethoate is separated from other components by gas chromatography on a non-polar column and determined by flame ionisation detection using dibutyl phthalate as internal standard.

 

 

Scope

For method see Handbook G, method extension SL and SG formulation.

Free 2,2’-bipyridyl: The method is usable for SL and SG-formulations.