title: Colorimetric determination of paraquat residues in soil and water.
mesh_terms: D003124:Colorimetry; D008722:Methods; D010269:Paraquat / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D012997:Solvents; D014876:Water Pollution / Q000032:analysis*
chemical_list: D010573:Pesticide Residues; D012987:Soil; D012997:Solvents; D010269:Paraquat