氨气污染与PM_(2.5)的关系研究进展

RESEARCH ADVANCES IN RELATIONSHIP BETWEEN AMMONIA POLLUTION AND PM_ (2.5)

近年来,农业源NH_3排放被认为会引起局部地区PM_(2.5)浓度过高,造成严重雾霾频发。氨排放作为在控霾环节长期以来被忽视的问题,现在日益受到关注。综述了NH_3在PM_(2.5)形成中的作用机理:在潮湿环境中NH_3与NO_x和SO_2反应形成的二次无机颗粒物成为PM_(2.5)的重要组成部分;介绍了NH_3形成PM_(2.5)的研究方法,包括源清单法、源模型法和受体模型法;定量分析了我国NH_4^+和SNA分别在PM_(2.5)中所占的质量分数,NH_4^+占(6.53±2.92)%,SNA占(32.03±11.05)%;最后提出了综合治霾的针对性政策建议。

In recent years,NH3 emission by agricultural source,was found to be a key cause of high concentration of PM2.5 and heavy haze,and increasingly attracted scholars＇ attention. This paper reviewed the mechanism of NH3 in PM2.5 formation,explained that NH3 interacting with NOx and SO2 in humid environment to form secondary inorganic particles was an important portion of atmospheric PM2.5. The methods to evaluate the amount of NH3 forming into PM2.5 were introduced,including source inventory method,source model method and receptor model method. We quantitatively analyzed the mass concentration proportion of NH4^＋ and SNA in PM2.5,and found that NH4^＋ accounted for（ 6. 53 ± 2. 92） % and SNA accounted for（ 32. 03 ±11. 05） % in PM2.5. Policy suggestions were proposed contrapuntally in order to control haze pollution in China.