Confirmation of atrazine and fenuron by alkylation at the ppm level.
D000478:Alkylation; D001280:Atrazine / Q000031:analogs & derivatives / Q000032:analysis*; D002849:Chromatography, Gas; D006540:Herbicides / Q000032:analysis*; D008722:Methods; D010671:Phenylurea Compounds / Q000032:analysis
D006540:Herbicides; D010671:Phenylurea Compounds; D001280:Atrazine