TY  - JOUR
A1  - Druckenmüller, Katharina
A1  - Günther, Klaus
A1  - Elbers, Gereon
T1  - Near-infrared spectroscopy (NIRS) as a tool to monitor exhaust air from poultry operations
JF  - Science of the Total Environment
N2  - Intensive poultry operation systems emit a considerable volume of inorganic and organic matter in the surrounding environment. Monitoring cleaning properties of exhaust air cleaning systems and to detect small but significant changes in emission characteristics during a fattening cycle is important for both emission and fattening process control. In the present study, we evaluated the potential of near-infrared spectroscopy (NIRS) combined with chemometric techniques as a monitoring tool of exhaust air from poultry operation systems. To generate a high-quality data set for evaluation, the exhaust air of two poultry houses was sampled by applying state-of-the-art filter sampling protocols. The two stables were identical except for one crucial difference, the presence or absence of an exhaust air cleaning system. In total, twenty-one exhaust air samples were collected at the two sites to monitor spectral differences caused by the cleaning device, and to follow changes in exhaust air characteristics during a fattening period. The total dust load was analyzed by gravimetric determination and included as a response variable in multivariate data analysis. The filter samples were directly measured with NIR spectroscopy. Principal component analysis (PCA), linear discriminant analysis (LDA), and factor analysis (FA) were effective in classifying the NIR exhaust air spectra according to fattening day and origin. The results indicate that the dust load and the composition of exhaust air (inorganic or organic matter) substantially influence the NIR spectral patterns. In conclusion, NIR spectroscopy as a tool is a promising and very rapid way to detect differences between exhaust air samples based on still not clearly defined circumstances triggered during a fattening period and the availability of an exhaust air cleaning system.
Y1  - 2018
U6  - http://dx.doi.org/10.1016/j.scitotenv.2018.02.072
SN  - 0048-9697
VL  - 630
SP  - 536
EP  - 543
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
T1  - Messung von Ruß in der Außenluft - Praktische Erfahrungen und Meßergebnisse aus NRW
JF  - Aktuelle Aufgaben der Messtechnik in der Luftreinhaltung : Kolloquium Heidelberg, 2. bis 4. Juni 1993 / Kommission Reinhaltung der Luft im VDI und DIN
Y1  - 1993
SN  - 3-18-091059-3
N1  - VDI-Berichte ; 1059
SP  - 337
PB  - VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - BOOK
A1  - Elbers, Gereon
T1  - Entwicklung eines Schnellmessverfahrens zur Charakterisierung der Wirkung von Umweltschadstoffen auf Pflanzen mit der Nahinfrarot-Spektroskopie : Schlussbericht zum Forschungsvorhaben ; Vorhabensbezeichnung: Schnellmessverfahren zur Charakterisierung der Wirkung von Umweltschadstoffen ; Laufzeit des Vorhabens: 01.09.2002 bis 29.02.2004 ; Verlängerung der Laufzeit: 01.03.2004 bis 30.04.04 ; Berichtszeitraum: 01.09.2002 bis 30.04.2004 / Zuwendungsempfänger: FH-Aachen, Abt. Jülich, FB Chemie und Biotechnik. Gereon Elbers
Y1  - 2004
N1  - Förderkennzeichen BMBF 1704502 ; weitere elektr. Ausgabe der TIB Hannover : http://edok01.tib.uni-hannover.de/edoks/e01fb05/485188317.pdf
PB  - Fachhochschule Aachen
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
T1  - Identification of marker peptides in hair for discrimination with regard to species and breed / Koerner, Andrea ; Ring, Maike ; Fabry, Marlies ; Elbers, Gereon ; Moeller, Martin
JF  - Proceedings of the Aachen-Dresden International Textile Conference, 3rd, Aachen, Germany, Nov. 26-27, 2009
Y1  - 2009
N1  - Aachen-Dresden International Textile Conference ; (3 : ; 2009.11.26-27 : ; Aachen)
PB  - DWI
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Bauer, H. D.
A1  - Buck, Manfred
A1  - Dahmann, D.
T1  - Rußmessungen am Arbeitsplatz und in der Außenluft - Vergleich zweier Meßmethoden  / H.D. Bauer, M. Buck, D. Dahmann, G. Elbers, H.-H. Fricke
JF  - Staub, Reinhaltung der Luft : air quality control. 54 (1994)
Y1  - 1994
SN  - 0039-0771
SP  - 55
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Behner, T.
A1  - Remme, S.
A1  - Prissok, F.
T1  - Interstitial Metal Impurities as a Possible Cause of Enhanced Reactivities / T. Behner, G. Elbers, S. Remme, F. Prissok, P. Stegger, and G. Lehmann
JF  - Berichte der Bunsen-Gesellschaft : physical chemistry, chemical physics. 90 (1986)
Y1  - 1986
SN  - 0005-9021
SP  - 698
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Buck, Manfred
T1  - Soot Concentration in Ambient Air / M. Buck, G. Elbers
JF  - Erdöl & Kohle, Erdgas, Petrochemie : EKEP. 45 (1992)
Y1  - 1992
SN  - 0014-0058
SP  - 219
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Gäb, Martina
A1  - Hoffmann, Katharina
A1  - Lobe, Melanie
T1  - NIR-spectroscopic investigation of foliage of ozone-stressed Fagus sylvatica trees / Gäb, Martina ; Hoffmann, Katharina ; Lobe, Melanie ; Metzger, Rut ; Ooyen, Sven van ; Elbers, Gereon ; Köllner, Barbara
JF  - Journal of Forest Research. 11 (2006), H. 2
Y1  - 2006
SN  - 1341-6979
SP  - 69
EP  - 75
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Lehmann, G.
T1  - Electron paramagnetic resonance of Vanadyl ion impurities in crystalline solids: A comment
JF  - Journal of Physics and Chemistry of Solids. 46 (1985), H. 6
Y1  - 1985
SN  - 0022-3697
SP  - 761
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Lehmann, G.
T1  - Electron Paramagnetic Resonance and Optical Absorption Spectra of VO2+ in CsCl Single Crystals
JF  - Zeitschrift für Naturforschung / Section A, a journal of physical sciences. 40 (1985)
Y1  - 1985
SN  - 0932-0784
SP  - 511
ER  -