title: [Detecting the nitrogen oxide in air with portable infrared spectrometer].
abstract: OBJECTIVE
  To establish a method for rapid detecting nitric oxide (NO) and nitrogen dioxide(NO2) in the workplace air with infrared spectrometer.
  
  
  METHODS
  The method of infrared spectrometer was developed to detect nitrogen oxide in laboratory, then applied to detect the concentration of nitrogen oxide in workplace air. The present method was compared with National Standard Methods.
  
  
  RESULTS
  NO and NO2 in air were detected simultaneously with the infrared spectrometer, not interfering each other. In standard condition, the minimum detectable concentrations of NO and NO2 were 0.67 and 1.03 mg/m3, the inferior limits of concentrations were 0.67 and 1.03 mg/m3 respectively. When the concentrations of NO and NO2 were 0.67-133.93 mg/m3 and 1.03-102.68 mg/m3, the accuracy and precision of detection were higher. As compared with National Standard Methods, the ratio of the results of two methods was 86.96% and 112.56%.
  
  
  CONCLUSIONS
  The method of infrared spectrometer is a rapid, simple and accurate method for detecting the concentrations of nitrogen oxide in the workplace air.
authors.affiliation: Public Health College, Southeast University, Nan Jing, Jiangsu Province, 210009 China.
authors.forename: Jian
authors.initials: J
authors.lastname: Liu
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Bao-li
authors.initials: BL
authors.lastname: Zhu
authors.forename: Chao-yi
authors.initials: CY
authors.lastname: Xia
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D009589:Nitrogen Oxides / Q000032:analysis*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D017132:Workplace
chemical_list: D000395:Air Pollutants, Occupational; D009589:Nitrogen Oxides