title: Determination of 2,3,7,8-tetrachlorodibenzo-1,4-dioxin at parts per billion levels in technical-grade 2,4,5-trichlorophenoxyacetic acid, in 2,4,5-T alkyl ester and 2,4,5-T amine salt herbicide formulations by quadrupole mass fragmentography.
mesh_terms: D015085:2,4,5-Trichlorophenoxyacetic Acid / Q000032:analysis*; D000588:Amines; D002722:Chlorobenzenes / Q000032:analysis; D002849:Chromatography, Gas; D004147:Dioxins / Q000032:analysis*; D004952:Esters; D008722:Methods
chemical_list: D000588:Amines; D002722:Chlorobenzenes; D004147:Dioxins; D004952:Esters; D015085:2,4,5-Trichlorophenoxyacetic Acid