Corrigendum to ‘Cold season ammonia emissions from land spreading with anaerobic digestates from biogas production’ [Atmos. Environ. 84 (2014) 35–38]
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In: Atmospheric Environment, Vol. 90, 06.2014, p. 149-149.
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TY - JOUR
T1 - Corrigendum to ‘Cold season ammonia emissions from land spreading with anaerobic digestates from biogas production’ [Atmos. Environ. 84 (2014) 35–38]
AU - Köster, Jan Reent
AU - Dittert, Klaus
AU - Mühling, Karl Hermann
AU - Kage, Henning
AU - Pacholski, Andreas
PY - 2014/6
Y1 - 2014/6
N2 - In the original report on our FTIR approach for measuring ammonia emissions after land spreading of anaerobic digestates a systematic error has occurred. In our quantitative analysis of single-beam FTIR spectra, subtraction of background IR radiation has been missed out, which is necessary for the bistatic OP FTIR configuration used in the study. This is mandatory because the thermal emission of near field objects contributes to the spectral continuum, while the NH3 absorption lines are not equally enhanced.Therefore now, prior to quantitative analysis of single-beam spectra, passive FTIR spectra (IR source off) were subtracted from the single beam spectra to compensate for background IR radiation (Jarvis, 2003). After this correction, the NH3 background concentration (i.e. the NH3 concentration before AD field spreading) was determined to be 5.19 ppb, which was taken into account during the flux calculation.
AB - In the original report on our FTIR approach for measuring ammonia emissions after land spreading of anaerobic digestates a systematic error has occurred. In our quantitative analysis of single-beam FTIR spectra, subtraction of background IR radiation has been missed out, which is necessary for the bistatic OP FTIR configuration used in the study. This is mandatory because the thermal emission of near field objects contributes to the spectral continuum, while the NH3 absorption lines are not equally enhanced.Therefore now, prior to quantitative analysis of single-beam spectra, passive FTIR spectra (IR source off) were subtracted from the single beam spectra to compensate for background IR radiation (Jarvis, 2003). After this correction, the NH3 background concentration (i.e. the NH3 concentration before AD field spreading) was determined to be 5.19 ppb, which was taken into account during the flux calculation.
KW - Sustainability Science
KW - Ecosystems Research
UR - http://www.scopus.com/inward/record.url?scp=84898428005&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2014.03.014
DO - 10.1016/j.atmosenv.2014.03.014
M3 - Comments / Debate / Reports
AN - SCOPUS:84898428005
VL - 90
SP - 149
EP - 149
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
ER -