A Novel Measurement Method of the Emission Rules of Greenhouse Gases from Fertilized Soil Based on Fourier Transform Infrared Spectrometry with Long Optical Path
文献类型: 外文期刊
作者: Xiao, Guangdong 1 ; Dong, Daming 1 ; Liao, Tongqing 2 ; Zheng, Ling 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Natl Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China
2.Anhui Univ, Sch Elect Informat Engn, Hefei 230039, Peoples R China
关键词: FTIR;greenhouse gases;optical path;soil
期刊名称:SPECTROSCOPY LETTERS ( 影响因子:1.179; 五年影响因子:1.176 )
ISSN: 0038-7010
年卷期: 2015 年 48 卷 8 期
页码:
收录情况: SCI
摘要: Farm soil is the main source of greenhouse gas emission. We developed an optical system for measuring nitrous oxide and carbon dioxide from soil using infrared spectrometer and long optical path gas cell based on multi-reflecting mirrors. The spectral characteristics of nitrous oxide at 2198-2223cm(-1) and of carbon dioxide at 2258-2283cm(-1) were observed with the system. We studied the rules of greenhouse gas emission and found that nitrous oxide increased with soil moisture whereas carbon dioxide showed no obvious relationship with moisture. We also studied the diurnal variation rules of nitrous oxide and carbon dioxide from fertilized soil. These results are consistent to the previous results obtained with other analytical methods. The results indicate that the infrared spectroscopy with long optical path is an effective way to measure greenhouse gas emission from soil.
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