title: Gas chromatographic determination of chlorothalonil in leaves and roots of Scrophularia and in soil.
abstract: A gas chromatographic method is described for determination of chlorothalonil residues in leaves and roots of Scrophularia and in soil. Samples were extracted with acetone and cleaned up on a Florisil column. Chlorothalonil residues are chromatographed directly on a glass column of 1.5% OV-17 and 2% QF-1 coated on 80-100 mesh Chromosorb W (HP) support and measured with a 63Ni electron capture detector. Detection limits are 0.001 ppm for leaf, 0.005 ppm for root, and 0.001 ppm for soil.
authors.affiliation: Zhejiang Traditional Chinese Medicine Research Institute, People's Republic of China.
authors.forename: L
authors.initials: L
authors.lastname: Zhao
authors.forename: D F
authors.initials: DF
authors.lastname: Fan
mesh_terms: D002849:Chromatography, Gas; D005659:Fungicides, Industrial / Q000032:analysis*; D009570:Nitriles / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012987:Soil / Q000032:analysis*
chemical_list: D005659:Fungicides, Industrial; D009570:Nitriles; D012987:Soil; C005806:tetrachloroisophthalonitrile