A novel calibration method for atmospheric NO3 radical via high reflectivity cavity
A novel calibration method for atmospheric NO3 radical via high reflectivity cavity
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一种新的高反射率腔大气NO3自由基标定方法
DOI：
10.1088/1361-6501/ab8833
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发表时间：
2020-05
影响因子：
2.4
通讯作者：
Li Zhiyan
中科院分区：
文献类型：
--
作者：
Wang Dan;Hu Renzhi;Xie Pinhua;Li Zhiyan
NO3自由基是夜间大气氧化能力的重要指标之一，其准确检测已被广泛研究。NO3自由基检测一般采用高反射率的腔体仪器，如腔体衰荡光谱（CRDS）和腔体增强吸收光谱（CEAS）。然而，取样检测容易在表面吸附自由基，这会导致并发症甚至额外的损失。根据NO3自由基与NO2的化学转化关系，结合CRDS和CEAS仪器对NO3自由基和NO2分别采用不同于以往相对定标方法的绝对定标方法。实验结果表明，当流量为6.5 SLPM时，CRDS仪器对NO3自由基的整体传输效率约为75%±9%。通过两种方法的对比实验，验证了该方法的准确性。实验结果表明，绝对校准是一种可靠可行的实验室径向校准方法。此外，绝对校准方法在现场测量中具有实现精确实时校准的潜力。
The NO3 radical is one of the important indicators of atmospheric oxidation capability at night, and its accurate detection has been extensively investigated. High reflectivity cavity instruments, such as cavity ring-down spectroscopy (CRDS) and cavity-enhanced absorption spectroscopy (CEAS), are generally employed for NO3 radical detection. However, sampling detection easily adsorbs radicals on surfaces, which causes complications and even additional loss. According to the chemical conversion relationship between NO3 radical and NO2, a method of absolute calibration different from the previous relative calibration method is applied by combining the CRDS and CEAS instruments for the NO3 radical and NO2, respectively. Experimental results show that the overall transmission efficiency of the NO3 radical for the CRDS instrument is approximately 75% ± 9% at a flow rate of 6.5 SLPM. Comparative experiments between the two methods are conducted to estimate the accuracy of this method. The achieved results indicate that absolute calibration is a reliable and feasible method for radical calibration in the laboratory. Furthermore, the absolute calibration method has the potential to realize accurate real-time calibration in field measurements.
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影响因子：
1.6
作者：
凌六一 Ling Liuyi;谢品华 Xie Pinhua;秦敏 Qin Min;胡仁志 Hu Renzhi;方武 Fang Wu;郑尼娜 Zheng Nina;司福祺 Si Fuqi
通讯作者：
凌六一 Ling Liuyi;谢品华 Xie Pinhua;秦敏 Qin Min;胡仁志 Hu Renzhi;方武 Fang Wu;郑尼娜 Zheng Nina;司福祺 Si Fuqi
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
影响因子：
3.8
作者：
N. Wagner;W. Dubé;R. Washenfelder;C. Young;I. Pollack;T. Ryerson;S. Brown
通讯作者：
N. Wagner;W. Dubé;R. Washenfelder;C. Young;I. Pollack;T. Ryerson;S. Brown
DOI：
10.1002/chin.201248241
发表时间：
2012-11
期刊：
ChemInform
影响因子：
--
作者：
S. Brown;J. Stutz
通讯作者：
S. Brown;J. Stutz