title: Degradation of thiram in water, soil and plants: a study by high-performance liquid chromatography.
abstract: A comprehensive study was conducted to evaluate the persistence of thiram in water and soil under controlled conditions and on two plants, namely tomato and radish, in field conditions. In order to follow the decay of the pesticide, an HPLC procedure was developed employing an octadecyl endcapped RP-C18 column using a mixture of acetonitrile and water as the mobile phase and an ultraviolet detector. Studies conducted in water at different temperature, pH and organic content revealed that the persistence of the pesticide decreases with the increase in all the three variables. In the three different types of soils studied, the effect of pH was more or less apparent on a similar line. On average a slower decay was observed in the case of plants than in water and soil.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India. bvgcyfcy@iitr.ernet.in
authors.forename: Bina
authors.initials: B
authors.lastname: Gupta
authors.forename: Manviri
authors.initials: M
authors.lastname: Rani
authors.forename: Rahul
authors.initials: R
authors.lastname: Kumar
mesh_terms: D055598:Chemical Phenomena; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006812:Humic Substances; D006863:Hydrogen-Ion Concentration; D018551:Solanum lycopersicum / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis / Q000737:chemistry*; D010944:Plants / Q000737:chemistry*; D031224:Raphanus / Q000737:chemistry; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry; D013696:Temperature; D013893:Thiram / Q000032:analysis / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry
chemical_list: D006812:Humic Substances; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D014867:Water; D013893:Thiram