| 光谱学与光谱分析 |
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| Cruise Observation of SO2, NO2 and Benzene with Mobile Portable DOAS in the Industrial Park |
| SHEN Lan-lan1, QIN Min1*, SUN Wei2, FANG Wu1, SUN Ye2, GAO Li-xiao3, XIE Pin-hua1, 4, DUAN Jun1, WANG Dan1, LU Xue1 |
1. Key Laboratory of Environmental Optical & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
2. Baicheng Ordnance Test Center of China, Baicheng 137001, China
3. China Defense Science and Technology Information Center, Beijing 100036, China
4. School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China |
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Abstract The self-developed portable DOAS instrument based on differential optical absorption spectroscopy(DOAS) and composed of optical fiber spectrograph and multiple-pass cell was introduced. The standard gases of SO2 and NO2 were employed to test the accuracy and stability of the system, and then cruise observation of SO2, NO2 and benzene was carried out using the system in Tongling industrial park. During the entire period, the polluted gases showed high concentrations near the contaminated areas and the maximum concentrations of SO2, NO2 and benzene were 5 023.2, 2 195.2 and 162.5 μg·m-3, respectively. With 12.6 m optical path, the detection limits of SO2, NO2 and benzene were 67.0, 169.9, 30.6 μg·m-3, respectively. The portable DOAS system provides a convenient and effective technique for industrial park about emergency and supervisory monitoring and evaluation of gas leakage and fugitive emissions of gaseous pollutants.
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Received: 2015-01-20
Accepted: 2015-04-28
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Corresponding Authors:
QIN Min
E-mail: mqin@aiofm.ac.cn
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