In Situ Measurement of Ammonia Concentration in Soil Headspace Using Fourier Transform Mid-Infrared Photoacoustic Spectroscopy

• Published in: Pedosphere Vol. 25; no. 4; pp. 605 - 612
• Main Authors: DU, Changwen, WANG, Jiao, ZHOU, Zijun, SHEN, Yazhen, ZHOU, Jianmin
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2015; State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 China
• Subjects: absorption; alkaline soils; ammonia; ammonia volatilization; application rate; cantilevel-type microphone; China; disturbed soils; emissions; field experimentation; FTIR-PAS; headspace analysis; irrigation; nitrogen; photoacoustic spectroscopy; prediction; principal component regression; soil incubation; soil temperature; urea; volatilization; 中红外; 傅里叶变换; 光谱测量; 土壤培养; 氨浓度; 碱性土壤; 红外光声光谱; China; cantilevel-type microphone; ammonia volatilization; principal component regression; nitrogen; soil incubation

Ammonia （NH3） volatilization is one of the important pathways of nitrogen loss in alkaline soil, and the NH3 concentration in soil headspace is directly linked with the NH3 volatilization. Ammonia was characterized by Fourier transform mid-infrared photoacoustic spectroscopy （FTIR-PAS） and two typic...