title: The use of ultrasonic extraction in the determination of some s-triazine herbicides in soils.
mesh_terms: D001280:Atrazine / Q000032:analysis; D005069:Evaluation Studies as Topic; D006540:Herbicides / Q000032:analysis*; D008722:Methods; D012987:Soil / Q000032:analysis*; D012995:Solubility; D014465:Ultrasonics
chemical_list: D006540:Herbicides; D012987:Soil; D001280:Atrazine