title: [Determination of tin dioxide in workplace air by atomic fluorescence spectrometry after alkali fusion].
abstract: OBJECTIVE
  To establish the method of atomic fluorescence spectrometry (AFS) after alkali fusion for determination of tin dioxide in workplace air.
  
  
  METHODS
  Tin dioxide in workplace air was collected with microporous membrane, directly digested by alkali fusion with solid sodium hydroxide heated by electric furnace, and determined by AFS.
  
  
  RESULTS
  The linear range of tin dioxide (as Sn) determined by AFS was 1.5~100 μg/L (excluding zero) , and the correlation coefficient was 0.9993. The detection limit of this method was 0.5 μg/L, the lower limit of quantification was 1.5 μg/L, and the minimum detectable concentration was 0.05 mg/m(3) (the volume of the air sample was 75 L) . The relative standard deviation was 1.94%~3.55%, and the average recovery of standard addition was 95.0%~96.0%.
  
  
  CONCLUSIONS
  The method of AFS after alkali fusion for determination of tin dioxide in workplace air is proved to be simple, rapid, sensitive, and accurate, with complete digestion.
authors.affiliation: Shenzhen Prevention and Treatment Center for Occupation Diseases, Shenzhen 518000, China.
authors.forename: F
authors.initials: F
authors.lastname: Liu
authors.forename: J P
authors.initials: JP
authors.lastname: Yun
authors.forename: S F
authors.initials: SF
authors.lastname: Li
authors.forename: Y R
authors.initials: YR
authors.lastname: Lin
mesh_terms: D000395:Air Pollutants, Occupational; D000468:Alkalies; D013050:Spectrometry, Fluorescence; D017971:Tin Compounds; D017132:Workplace
chemical_list: D000395:Air Pollutants, Occupational; D000468:Alkalies; D017971:Tin Compounds; C045358:stannic oxide