Nighttime N2O5 chemistry in an urban site of Beijing in winter based on the measurements by cavity ring-down spectroscopy
Nighttime N2O5 chemistry in an urban site of Beijing in winter based on the measurements by cavity ring-down spectroscopy
复制标题
基于腔衰荡光谱测量的北京城区冬季夜间 N2O5 化学
DOI：
10.1007/s11869-021-01125-4
复制
发表时间：
2022-01
期刊：
影响因子：
--
通讯作者：
Chuan Lin
中科院分区：
文献类型：
--
作者：
Zhiyan Li;Dan Wang;Pinhua Xie;Renzhi Hu;Hao chen;Chuan Lin
五氧化二氮（N2O5）在夜间化学中起着重要作用。2016年11月13日至12月3日，在北京某城区开展了空腔衰荡光谱法N2O5野外测量。在此次活动中，由于近地面nox排放高，N2O5浓度超过检测限的天数只有4天。4 d内N2O5平均浓度为23.4±25.9 pptv。NO3产率变化范围为0.03 ~ 6.26 ppbv/h，平均值为0.94±0.83 ppbv/h， N2O5寿命平均值为2.5±2.5 min，表明北京城区冬季N2O5化学活性较好。讨论了N2O5的不同损失途径。结果表明，冬季城区N2O5的损失主要来源于N2O5的直接非均相吸收反应和NO3与NO的间接反应，分别占N2O5总损失的28-89.6%和9.8-65%。NO3与VOC的间接损失反应不太重要。生物源性VOCs是NO3反应的主要伙伴，烯烃和芳烃对NO3反应的贡献较小。
Dinitrogen pentoxide (N2O5) plays an important role in nighttime chemistry. A field campaign was conducted to measure N2O5 by cavity ring-down spectroscopy method from November 13 to December 3, 2016, in an urban site in Beijing. During the campaign, there were only 4 days that N2O5 concentrations were above the detection limit due to high NO emissions near the ground. The average N2O5 concentration in these 4 days was 23.4 ± 25.9 pptv. The calculated NO3 production rate varied between 0.03 and 6.26 ppbv/h, with a mean value of 0.94 ± 0.83 ppbv/h, and the average N2O5 lifetime was 2.5 ± 2.5 min, indicating the N2O5 chemistry in urban Beijing during winter time was active. The different loss pathways of N2O5 were discussed. The results show that the loss of N2O5 in winter urban area mainly attributed to the direct heterogeneous uptake reaction of N2O5, and indirect loss of NO3 reaction with NO, which contributed 28–89.6% and 9.8–65% to the overall N2O5 loss, respectively. Indirect loss reaction of NO3 with VOC was of lesser importance. Biogenic VOCs were the dominant NO3 reaction partners, and alkenes along with aromatics contributed less to NO3 reactivity.
登录
查看更多内容
北京城区观测到的高 N2O5 浓度：大硝酸盐形成途径的影响
影响因子：
10.9
作者：
Wang Haichao;Lu Keding;Chen Xiaorui;Zhu Qindan;Chen Qi;Guo Song;Jiang Meiqing;Li Xin;Shang Dongjie;Tan Zhaofeng;Wu Yusheng;Wu Zhijun;Zou Qi;Zheng Yan;Zeng Limin;Zhu Tong;Hu Min;Zhang Yuanhang
通讯作者：
Zhang Yuanhang
中国北京大气 N2O5 现场 CRDS 与 CEAS 测量对比
影响因子：
9.8
作者：
Li Zhiyan;Hu Renzhi;Xie Pinhua;Wang Haichao;Lu Keding;Wang Dan
通讯作者：
Wang Dan
DOI：
10.1021/j100101a009
发表时间：
1994
期刊：
The Journal of Physical Chemistry
影响因子：
--
作者：
R. Yokelson;J. B. Burkholder;R. Fox;R. Talukdar;A. Ravishankara
通讯作者：
R. Yokelson;J. B. Burkholder;R. Fox;R. Talukdar;A. Ravishankara
影响因子：
6.3
作者：
N. Sobanski;Mingjin Tang;J. Thieser;G. Schuster;D. Pöhler;H. Fischer;W. Song;C. Sauvage;Jonathan Williams;J. Fachinger;F. Berkes;P. Hoor;U. Platt;J. Lelieveld;J. Crowley
通讯作者：
N. Sobanski;Mingjin Tang;J. Thieser;G. Schuster;D. Pöhler;H. Fischer;W. Song;C. Sauvage;Jonathan Williams;J. Fachinger;F. Berkes;P. Hoor;U. Platt;J. Lelieveld;J. Crowley
DOI：
10.1016/j.scitotenv.2017.11.352
发表时间：
2018-05
期刊：
The Science of the total environment
影响因子：
--
作者：
H. Yun;Tao Wang;Weihao Wang;Y. J. Tham;Qinyi Li;Zhe Wang;S. Poon
通讯作者：
H. Yun;Tao Wang;Weihao Wang;Y. J. Tham;Qinyi Li;Zhe Wang;S. Poon