title: 2,4-D levels in the South Saskatchewan River in 1973 as determined by GLC method.
abstract: 2,4-D levels in the South Saskatchewan River near Saskatoon in 1973 at the height of the spraying season, and at harvestime, were determined by a method involving direct glc analysis, ankaline hydrolysis, followed by n-butylation of the liberated free acid after acidification of the alkaline solution, and confirmed by subsequent n-octylation. GC/MS also confirmed the presence of 2,4-D. 2,4-D was detected during the spraying season but not at harvest time or in river mud samples. The average level was ca. 2mug of acid equivalent to 2,4-D per liter of river water at the height of the spraying season.
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000032:analysis*; D002849:Chromatography, Gas; D005618:Fresh Water / Q000032:analysis; D008722:Methods; D012525:Saskatchewan; D012987:Soil / Q000032:analysis
chemical_list: D012987:Soil; D015084:2,4-Dichlorophenoxyacetic Acid