title: [Determination of phosphoric acid in the air of workplace by ion chromatography].
abstract: OBJECTIVE
  To develop a method to determine phosphoric acid in the air of workplace by ion chromatography.
  
  
  METHODS
  Phosphoric acid was collected by millipore filter and washed by deionized water then detected by ion chromatography.
  
  
  RESULTS
  Linearity range of test was 0 ∼ 20 µg/ml, relative standard deviation (RSD) was 1.95% ∼ 3.31%, the elution efficiency was 103.0% ∼ 109.6%, determination limit was 0.1 µg/ml (when sample size was 20.01) concentration limit was 0.01 mg/m(3) (when the collected air was 75 L).
  
  
  CONCLUSIONS
  This method is convenient for air collection, simple, with high sensitivity and good precision, is a good method for determination of phosphoric acid in the air of workplace.
authors.affiliation: Shenzhen Prevention and Treatment Center for Occupational Disease, Shenzhen 518001, China.
authors.forename: Shuang-feng
authors.initials: SF
authors.lastname: Li
authors.forename: Juan
authors.initials: J
authors.lastname: Yi
authors.forename: Jin-min
authors.initials: JM
authors.lastname: Cai
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D002845:Chromatography; D007477:Ions / Q000032:analysis; D010756:Phosphoric Acids / Q000032:analysis*; D017132:Workplace
chemical_list: D000395:Air Pollutants, Occupational; D007477:Ions; D010756:Phosphoric Acids