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Evidence for Strong HONO Emission from Fertilized Agricultural Fields and its Remarkable Impact on Regional O-3 Pollution in the Summer North China Plain
Xue, Chaoyang; Ye, Can; Zhang, Chenglong; Catoire, Valery; Liu, Pengfei; Gu, Rongrong; Zhang, Jingwei; Ma, Zhuobiao; Zhao, Xiaoxi; Zhang, Wenqian; Ren, Yangang; Krysztofiak, Gisele; Tong, Shengrui; Xue, Likun; An, Junling; Ge, Maofa; Mellouki, Abdelwahid; Mu, Yujing
2021-02-18
Source PublicationACS EARTH AND SPACE CHEMISTRY
ISSN2472-3452
Volume5Issue:2Pages:340-347
AbstractSummertime HONO concentrations were synchronously measured at two (agricultural and nonagricultural) sites in the North China Plain (NCP). Daytime HONO (1.4 +/- 0.6 ppbv) and HONO/NO2 ((12 +/- 8)%) over the agricultural field after fertilization were found to be remarkably higher than those before fertilization, implying strong HONO emission from the fertilized fields. Synchronous enhancements of HONO and O-3 after fertilization at both sites suggested that the emitted HONO accelerated the local and the regional O-3 pollution. HONO budget analysis further revealed that its emission was significantly enhanced after fertilization. Soil HONO emission flux and its uncertainty were estimated and discussed. The estimated emission flux exhibited a distinct diurnal variation with a noontime maximum. The net OH production rate from HONO photolysis greatly exceeded that from O-3 photolysis over the agricultural field, and their maximum ratio of 4.7 was obtained after fertilization. We provide field evidence that fertilized fields in the NCP act as a strong HONO source, which accelerates daytime photochemistry, leading to an increase of regional photo-oxidants such as O-3. Considering the severe O-3 pollution in the summer NCP and that the large area of the agricultural field is regularly treated with high fertilization amount in this region, HONO emission should be taken into account in the regional air quality deterioration.
Department大气环境与污染控制实验室
KeywordHONO nitrogen fertilization agricultural fields emission flux O-3
WOS Research AreaChemistry, Multidisciplinary ; Geochemistry & Geophysics
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45618
Collection大气环境与污染控制实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
2.Univ Orleans, Lab Phys & Chim Environm & Espace LPC2E, CNRS, CNES, F-45071 Orleans, France
3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
4.Shandong Univ, Environm Res Inst, Qingdao 266237, Shandong, Peoples R China
5.Chinese Acad Sci, Inst Atmospher Phys IAP, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xue, Chaoyang,Ye, Can,Zhang, Chenglong,et al. Evidence for Strong HONO Emission from Fertilized Agricultural Fields and its Remarkable Impact on Regional O-3 Pollution in the Summer North China Plain[J]. ACS EARTH AND SPACE CHEMISTRY,2021,5(2):340-347.
APA Xue, Chaoyang.,Ye, Can.,Zhang, Chenglong.,Catoire, Valery.,Liu, Pengfei.,...&Mu, Yujing.(2021).Evidence for Strong HONO Emission from Fertilized Agricultural Fields and its Remarkable Impact on Regional O-3 Pollution in the Summer North China Plain.ACS EARTH AND SPACE CHEMISTRY,5(2),340-347.
MLA Xue, Chaoyang,et al."Evidence for Strong HONO Emission from Fertilized Agricultural Fields and its Remarkable Impact on Regional O-3 Pollution in the Summer North China Plain".ACS EARTH AND SPACE CHEMISTRY 5.2(2021):340-347.
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