【摘要】 近年来,农业源NH₃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NH₃在PM_2.5形成中的作用机理:在潮湿环境中NH₃与NO_x和SO₂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NH₃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NH₄⁺和SNA分别在PM_2.5中所占的质量分数,NH₄⁺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。更多还原

【Abstract】 In recent years,NH₃ emission by agricultural source,was found to be a key cause of high concentration of PM_2.5 and heavy haze,and increasingly attracted scholars’ attention. This paper reviewed the mechanism of NH₃ in PM_2.5 formation,explained that NH₃ interacting with NO_x and SO₂ in humid environment to form secondary inorganic particles was an important portion of atmospheric PM_2.5. The methods to evaluate the amount of NH₃ forming into PM_2.5 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 PM_2.5,and found that NH₄⁺ accounted for（ 6. 53 ± 2. 92） % and SNA accounted for（ 32. 03 ±11. 05） % in PM_2.5. Policy suggestions were proposed contrapuntally in order to control haze pollution in China.更多还原