家用臭氧机副产物氮氧化物的产量及控制  

Output and Control of Nitrogen Oxides Produced by Household Ozone Generator as By-products

作　　者：刘海龙[1] 王相文[1] 焦茹媛[1] 李政剑[1] 杨慧[1] 程芳琴[1] 

机构地区：[1]山西大学环境与资源学院,山西太原030006

出　　处：《环境与健康杂志》2009年第3期235-236,共2页Journal of Environment and Health

基　　金：山西大学科研训练基金资助项目

摘　　要：目的了解家用臭氧机副产物氮氧化物(尤其是NO2)的产量并研究控制措施。方法利用离子色谱法、pH测定、碘量法等臭氧测定方法对市售某型号家用臭氧机在正常工作状态下臭氧及其副产物NO2的产量进行测定,并使用纯水作为吸收液对NO2的控制进行研究。结果家用臭氧机工作约15min后产生NO2,随工作时间的延长,NO2产量增大;60min后,臭氧机工作时间和吸收液中NO3-含量成正比,造成吸收液pH值显著降低。家用臭氧机副产物NO2经过一级纯水(有效水深12cm)吸收后,经0.1mol/LNaOH吸收,吸收液中NO3-<0.01mg/L,对臭氧产量影响不明显。结论家用臭氧机副产物NO2的产量随工作时间的延长呈增加趋势。NO2可通过纯水吸收得到有效控制。Objective To investigate the NOx （nitrogen oxides, esp. NO2） output of household ozone generator and the control method. Methods Ion chromatogram, pH detection and iodine titration were used to study the outputs of ozone and the by-product, NOx, generated by some certain household ozone generator in normal operation condition. The method of controlling NO2 simply by pure water absorption was also studied. Results At about 15 min, the ozone generator produced NO2 and turned into NO3^-, the amount increased along with the operating time. After 60 min, the NO3^- was almost in proportion to the operating time, the pH value decreased clearly, pH value was a proper and simple substitute parameter to display the generation and accumulation of NO2, NO2 could be efficiently controlled by pure water absorption. NO3^- absorbed in a 0.1 mol/L NaOH solution was less than 0.01 mg/L afterapurewaterabsorberwhich had an effective depth of 12cm, withlittleinfluenceofozone production. Conclusion NO2 will be generated inevitably and the amount of the by-product increases with the running time of the household ozone generator. Pure water absorption is efficient to control NO2 generation.

关 键 词：空气污染 臭氧 氮氧化物 臭氧机 

分 类 号：R122.2[医药卫生—环境卫生学]