title: Degradation of organophosphorus and carbamate pesticides in soils--HPLC determination.
abstract: Best conditions suited for the extraction and trace analysis of dimethoate, malathion, methyl-parathion, carbaryl, carbendazim and carbofuran in soils, using HPLC, were established. This was followed by studies related to persistence of residues in different soils. Half-life and time taken for 95% dissipation were determined in each case. Higher pH, moderate moisture and high calcium carbonate content aided degradation while organic matter increased persistence.
authors.affiliation: Department of Chemistry, University of Roorkee, India.
authors.forename: S
authors.initials: S
authors.lastname: Thapar
authors.forename: R
authors.initials: R
authors.lastname: Bhushan
authors.forename: R P
authors.initials: RP
authors.lastname: Mathur
mesh_terms: D001673:Biodegradation, Environmental; D002219:Carbamates; D002851:Chromatography, High Pressure Liquid; D006207:Half-Life; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007306:Insecticides / Q000032:analysis*; D009943:Organophosphorus Compounds; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D012997:Solvents
chemical_list: D002219:Carbamates; D007202:Indicators and Reagents; D007306:Insecticides; D009943:Organophosphorus Compounds; D010573:Pesticide Residues; D012987:Soil; D012997:Solvents