title: [Residues analysis of pesticides and heavy metals in Whitmania pigra and its breeding base].
abstract: OBJECTIVE
  To give a reference to the safe and standardized production of Whitmania pigra, through the comparative research on residues of heavy metals and pesticide in W. pigra, breeding base soil and breeding water .
  
  
  METHODS
  Residues of heavy metals and pesticide in W. Pigra, soil and water were determined by atomic absorption spectrophotometers, atomic fluorescence spectrophotometers and GC-ECD.
  
  
  CONCLUSIONS
  With the exclusion of Pb residue, the residues of HCH, DDT and other heavy metals in W. pigra, soil and water in breding base met the requirements of the national standards. We suggest that the residues limits of animal drugs like W. pigra should be listed in a separate category when the national standards are revised in the fature.
authors.affiliation: Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China. gqs@herbstimes.com
authors.forename: Qiao-Sheng
authors.initials: QS
authors.lastname: Guo
authors.forename: Fei
authors.initials: F
authors.lastname: Liu
authors.forename: Hong-Zhuan
authors.initials: HZ
authors.lastname: Shi
mesh_terms: D000818:Animals; D003634:DDT / Q000032:analysis; D001556:Hexachlorocyclohexane / Q000032:analysis; D007854:Lead / Q000032:analysis*; D007865:Leeches / Q000737:chemistry*; D008419:Materia Medica / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D011786:Quality Control; D012987:Soil / Q000032:analysis*; D014867:Water / Q000032:analysis*
chemical_list: D008419:Materia Medica; D019216:Metals, Heavy; D010573:Pesticide Residues; D012987:Soil; D014867:Water; D007854:Lead; D001556:Hexachlorocyclohexane; D003634:DDT