A dual dynamic chamber system based on IBBCEAS for measuring fluxes of nitrous acid in agricultural fields in the North China Plain

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	A dual dynamic chamber system based on IBBCEAS for measuring fluxes of nitrous acid in agricultural fields in the North China Plain
	Tang, Ke ; Qin, Min ; Duan, Jun ; Fang, Wu ; Meng, Fanhao ; Liang, Shuaixi ; Xie, Pinhua ; Liu, Jianguo ; Liu, Wenqing ; Xue, Chaoyang
刊名	ATMOSPHERIC ENVIRONMENT
	2019
卷号	196 页码:2020-10-19
关键词	Dynamic chamber IBBCEAS Soil Fertilization HONO emission
ISSN号	1352-2310
英文摘要	A dual dynamic chamber system combined with incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS) was first developed to measure nitrous acid (HONO) emission fluxes from agricultural fields in the North China Plain. The concentrations of HONO were measured with two IBBCEAS instruments in the sample and blank chambers, respectively. To ensure the accuracy and reliability of flux measurement, before the dynamic chamber system was deployed in an agricultural field, the correlation and accuracy of the two IBBCEAS instruments were tested, and the mixing uniformity of the gas in the chamber was verified. Within a week after fertilization, the observed HONO flux exhibited a pronounced diurnal variation profile with a maximum of 20.25 ng m(-2) s(-1) at noontime and a minimum of -0.86 ng N m(-2) s(-1) in the early morning, one order of magnitude higher than the flux observed in previously reported literature from fields. During this period, the concentrations of HONO in both of the chambers was higher in the daytime than that nighttime, and the concentration of HONO in blank chamber reached the maximum of 18.88 ppbv at noon on the 5th day after fertilization. HONO and NO2 in the sample chambers showed opposite diurnal profiles. The field observation results suggested that the high HONO flux is mainly from the direct emission of soil rather than from the heterogeneous reaction of NO2. Agricultural fertilization will affect the balance of the HONO budget, and then affect the atmospheric oxidation in the North China Plain.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43127]
专题	生态环境研究中心_大气环境科学实验室
作者单位	1.Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, CAS Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Tang, Ke,Qin, Min,Duan, Jun,et al. A dual dynamic chamber system based on IBBCEAS for measuring fluxes of nitrous acid in agricultural fields in the North China Plain[J]. ATMOSPHERIC ENVIRONMENT,2019,196:2020-10-19.
APA	Tang, Ke.,Qin, Min.,Duan, Jun.,Fang, Wu.,Meng, Fanhao.,...&Mu, Yujing.(2019).A dual dynamic chamber system based on IBBCEAS for measuring fluxes of nitrous acid in agricultural fields in the North China Plain.ATMOSPHERIC ENVIRONMENT,196,2020-10-19.
MLA	Tang, Ke,et al."A dual dynamic chamber system based on IBBCEAS for measuring fluxes of nitrous acid in agricultural fields in the North China Plain".ATMOSPHERIC ENVIRONMENT 196(2019):2020-10-19.