title: [Determination a variety of acidic gas in air of workplace by Ion Chromatography].
abstract: OBJECTIVE
  To establish a method for determination of a variety of acid gas in the workplace air by Ion Chromatography. (hydrofluoric acid, hydrogen chloride or hydrochloric acid, sulfur anhydride or sulfuric acid, phosphoric acid, oxalic acid).
  
  
  METHODS
  The sample in workplace air was collected by the porous glass plate absorption tube containing 5 ml leacheate. (Sulfuric acid fog, phosphoric acid aerosol microporous membrane after collection, eluted with 5 ml of eluent.) To separated by AS14+AG14 chromatography column, by carbonate (2.0+1.0) mmol/L (Na(2)CO(3)-NaHCO(3)) as eluent, flow rate of 1 ml/min, then analyzed by electrical conductivity detector. The retain time was used for qualitative and the peak area was used for quantitation.
  
  
  RESULTS
  The each ion of a variety of acid gas in the air of workplace were excellent in carbonate eluent separation. The linear range of working curve of 0∼20 mg/L. The correlation coefficient r>0.999; lower detection limit of 3.6∼115 µg/L; quantitative limit of 0.012∼0.53 mg/L; acquisition of 15L air were measured, the minimum detection concentration is 0.004 0∼0.13 mg/m(3). The recovery rate is 99.7%∼101.1%. In the sample without mutual interference ions. Samples stored at room temperature for 7 days.
  
  
  CONCLUSIONS
  The same analysis method, the detection of various acidic gases in the air of workplace, simple operation, good separation effect, high sensitivity, high detection efficiency, easy popularization and application.
authors.affiliation: Zaozhuang Center for Disease Control and Prevention, Shandong Zaozhuang 277101, China.
authors.forename: Shiyong
authors.initials: S
authors.lastname: Li
mesh_terms: D000148:Acids, Noncarboxylic / Q000032:analysis*; D000388:Air / Q000032:analysis; D000395:Air Pollutants, Occupational / Q000032:analysis*; D002845:Chromatography / Q000379:methods*; D005740:Gases; D006851:Hydrochloric Acid; D006858:Hydrofluoric Acid; D007477:Ions / Q000032:analysis; D057230:Limit of Detection; D010756:Phosphoric Acids; D013464:Sulfuric Acids; D017132:Workplace
chemical_list: D000148:Acids, Noncarboxylic; D000395:Air Pollutants, Occupational; D005740:Gases; D007477:Ions; D010756:Phosphoric Acids; D013464:Sulfuric Acids; C030242:phosphoric acid; C033158:sulfuric acid; D006851:Hydrochloric Acid; D006858:Hydrofluoric Acid