History
GCAnalytical Methods
•
All isomers/congeners can be separated from each other with a
minimum of two columns (
Ryan, J., 1991) andGCHRMS
•
Typicallyused:
60-MGC column, 5% phenyl liquid phase,
separatesmany congeners, but not with complete resolution
HOWEVER..
•
Confirmation still required, generallywith “high-cyano” liquid
phases
ex. for 2,3,7,8-TCDFMethod 1613 suggests a 225-phase
