空气中氮氧化物的便携式红外光谱仪快速检测法  

Detecting the nitrogen oxide in air with portable infrared pectrometer

作　　者：刘坚[1] 张锋[2] 朱宝立[2] 夏超一[1] 

机构地区：[1]东南大学公共卫生学院,南京210009 [2]江苏省疾病预防控制中心,南京210009

出　　处：《中华劳动卫生职业病杂志》2011年第11期862-864,共3页Chinese Journal of Industrial Hygiene and Occupational Diseases

基　　金：基金项目：卫生部公益课题：职业卫生快速检测与健康监护技术研究（200902006）

摘　　要：目的建立作业场所空气中NO、NO2浓度的红外光谱快速检测方法。方法在实验室建立便携式红外光谱仪检测氮氧化物的方法，然后在作业场所使用该技术，对空气中氮氧化物浓度进行检测，并与国家标准检测方法比较。结果空气中NO、NO的浓度可以同时使用便携式红外光谱仪检测，两者互不干扰。在标准状况下，NO、NO2的最低检测浓度分别为0．13和0．21mg／m^3，定量下限分别为0．67和1．03mglm^3。NO浓度在0．67～133．93mg／m^3、NO2浓度在1．03～102．68mg／m^3时具有较高的准确度和精密度。与国家标准方法检测结果相比，两者检测结果比值为86．96％，112．56％。结论便携式红外光谱仪直接检测空气中氮氧化物浓度方法准确、简便、快速，能反映空气中氮氧化物的真实浓度，适合于工作场所空气中氮氧化物浓度的检测。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%. Conclusion The method of infrared spectrometer is a rapid, simple and accurate method for detecting the concentrations of nitrogen oxide in the workplace air.

关 键 词：工作场所 氮氧化物 快速检测 

分 类 号：O65[理学—分析化学] X83[理学—化学]