In situ monitoring of atmospheric nitrous acid based on multi-pumping flow system and liquid waveguide capillary cell

doi:10.1016/j.jes.2015.11.034

CORC > 北京大学 > 环境科学与工程学院

	In situ monitoring of atmospheric nitrous acid based on multi-pumping flow system and liquid waveguide capillary cell
	Yuhan Liu ; Keding Lu ; Huabin Dong ; Xin Li ; Peng Cheng ; Qi Zou ; Yusheng Wu
刊名	环境科学学报（英文版）
	2016
关键词	HONO Photometry Field campaign Atmospheric chemistry DIFFERENTIAL OPTICAL-ABSORPTION GAS-PHASE SOURCE URBAN ATMOSPHERE HONO FORMATION NITRIC-ACID CHINA NO2 CHEMISTRY MECHANISM AREA
DOI	10.1016/j.jes.2015.11.034
英文摘要	In the last four decades, various techniques including spectroscopic, wet chemical and mass spectrometric methods, have been developed and applied for the detection of ambient nitrous acid (HONO). We developed a HONO detection system based on long path photometry which consists of three independent modules i.e., sampling module, fluid propulsion module and detection module. In the propulsion module, solenoid pumps are applied. With solenoid pumps the pulsed flow can be computer controlled both in terms of pump stroke volume and pulse frequency, which enables the attainment of a very stable flow rate. In the detection module, a customized Liquid Waveguide Capillary Cell (LWCC) is used. The customized LWCC pre-sets the optical fiber in-coupling with the liquid wave guide, providing the option of fast startup and easy maintenance of the absorption photometry. In summer 2014, our system was deployed in a comprehensive campaign at a rural site in the North China Plain. More than one month of high quality HONO data spanning from the limit of detection to 5 ppb were collected. Intercomparison of our system with another established system from Forschungszentrum Juelich is presented and discussed. In conclusion, our instrument achieved a detection limit of 10 pptV within 2 min and a measurement uncertainty of 7%, which is well suited for investigation of the HONO budget from urban to rural conditions in China. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.; supported by the National Natural Science Foundation of China,the Strategic Priority Research Program of the Chinese Academy of Sciences,the special fund of State Key Joint Laboratory of Environment Simulation and Pollution Control,supported by the Collaborative Innovation Center for Regional Environmental Quality; SCI(E); EI; PubMed; 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); y.h.liu@pku.edu.cn; k.lu@pku.edu.cn; yhzhang@pku.edu.cn; 5; 273-284; 43
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/451025]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yuhan Liu,Keding Lu,Huabin Dong,et al. In situ monitoring of atmospheric nitrous acid based on multi-pumping flow system and liquid waveguide capillary cell[J]. 环境科学学报（英文版）,2016.
APA	Yuhan Liu.,Keding Lu.,Huabin Dong.,Xin Li.,Peng Cheng.,...&Yusheng Wu.(2016).In situ monitoring of atmospheric nitrous acid based on multi-pumping flow system and liquid waveguide capillary cell.环境科学学报（英文版）.
MLA	Yuhan Liu,et al."In situ monitoring of atmospheric nitrous acid based on multi-pumping flow system and liquid waveguide capillary cell".环境科学学报（英文版） (2016).