TY - JOUR
T1 - In-situ monitoring of ammonia gas using an optical fibre based approach
AU - Dooly, G.
AU - Manap, H.
AU - O'Keeffe, S.
AU - Lewis, E.
PY - 2011
Y1 - 2011
N2 - An optical fibre sensor for the monitoring of low level atmospheric ammonia concentrations is presented. The measuring technique employed is based on a differential optical absorption approach, rather than a semiconductor based technique which is generally exploited within comparable commercially available products. The sensor described herein demonstrates vast improvements in terms of sensitivity, selectivity and lifespan over ammonia sensors currently available commercially. Extensive laboratory-based experimental tests demonstrate the sensor's ability to monitor concentrations as low as 1ppm without any notable cross-sensitivity issues to atmospheric gases such as nitrogen, oxygen and carbon dioxide. Furthermore, in-situ experimental tests within an agricultural cattle enclosure demonstrate sensor's suitability to environments where low concentration monitoring of ammonia over extended periods of time is necessary.
AB - An optical fibre sensor for the monitoring of low level atmospheric ammonia concentrations is presented. The measuring technique employed is based on a differential optical absorption approach, rather than a semiconductor based technique which is generally exploited within comparable commercially available products. The sensor described herein demonstrates vast improvements in terms of sensitivity, selectivity and lifespan over ammonia sensors currently available commercially. Extensive laboratory-based experimental tests demonstrate the sensor's ability to monitor concentrations as low as 1ppm without any notable cross-sensitivity issues to atmospheric gases such as nitrogen, oxygen and carbon dioxide. Furthermore, in-situ experimental tests within an agricultural cattle enclosure demonstrate sensor's suitability to environments where low concentration monitoring of ammonia over extended periods of time is necessary.
UR - http://www.scopus.com/inward/record.url?scp=83055187918&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/307/1/012058
DO - 10.1088/1742-6596/307/1/012058
M3 - Conference article
AN - SCOPUS:83055187918
SN - 1742-6588
VL - 307
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012058
T2 - 16th Conference in the Biennial Sensors and Their Applications
Y2 - 12 September 2011 through 14 September 2011
ER -