title: [Determination of sulfur dioxide in traditional Chinese medicine by derivative fluorometry].
abstract: OBJECTIVE
  To establish a derivative fluorometry method for the determination of sulfur dioxide residues in traditional Chinese medicine.
  
  
  METHODS
  The optimal derivation condition was established. The fluorescence intensity was detected at excitation wavelength of 321 nm, and emission wavelength of 384 nm.
  
  
  RESULTS
  A linear relationship was obtained between the fluorescence intensity and the addition of reference substance in the range of 0.999 7-17.99 nmol with a correlation coeffient of 0.999 9, and the average recovery was 102.3% with RSD 4.6%.
  
  
  CONCLUSIONS
  This method is simple and sensitive with quick and correct result. It can provide a reference for the determination of sulfur dioxide residues in traditional Chinese medicine.
authors.affiliation: Laboratory Constructed by PRC and Sichuan Province in Systematically Research and Development Utilization of Traditional Chinese Medicine Resources, Department of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. youwell-done@163.com
authors.forename: Yue
authors.initials: Y
authors.lastname: Peng
authors.forename: Xue-Lian
authors.initials: XL
authors.lastname: Li
authors.forename: Ling
authors.initials: L
authors.lastname: Yin
authors.forename: Hong-Ping
authors.initials: HP
authors.lastname: Chen
authors.forename: Dan-Qing
authors.initials: DQ
authors.lastname: Fan
authors.forename: You-Ping
authors.initials: YP
authors.lastname: Liu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000032:analysis*; D005453:Fluorescence; D008516:Medicine, Chinese Traditional; D012680:Sensitivity and Specificity; D013045:Species Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013458:Sulfur Dioxide / Q000032:analysis*; D013696:Temperature
chemical_list: D004365:Drugs, Chinese Herbal; D013458:Sulfur Dioxide