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Odour impact

odour release, dispersion and influence on human well-being with specific focus on animal production

Nimmermark, Sven (2004). Odour impact. Diss. (sammanfattning/summary) Alnarp : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae. Agraria, 1401-6249 ; 494
ISBN 91-576-6774-8
[Doctoral thesis]

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Our sense of smell provides us with the opportunity to explore our chemical environment. Upon perceiving an odour our reactions can be approach as well as avoidance. Emissions from a number of different operations are common causes of complaints. This thesis deals primarily with odours from livestock and poultry operations, which are common causes of annoyance. The main hypothesis of the thesis was that odours and odorants may affect health and that a correlation between measurements of various parameters of odours and health exists. The main objective was to contribute to improved well-being and health and to reduce conflicts by studying factors affecting odour release, odour dispersion in the neighbourhood and factors of importance for well-being and health. Another objective was to discuss measurements of the odours in question using electronic noses. Electronic noses can be sensitive enough to measure odours related to farms and a correlation between their response and odour concentrations has been found. Studies of factors affecting odour release in a climate chamber equipped with a floor housing system for laying hens resulted in significant correlations between temperature and humidity and odour as well as ammonia concentrations and emissions. Odour observations reported by neighbourhood monitors indicated that setback distances predicted by the OFFSET (Odour from Feedlot Setback Estimation Tool) model for stable weather conditions were correlated to the exposure. Variation of emission rates and variations in concentration in an odour plume contribute to difficulties in predicting intensities in the neighbourhood. Observed increased frequencies of respiratory symptoms and symptoms like sleeping difficulties, headache, nausea, palpitations and alternations of mood in neighbours of large scale animal operations can be caused by odours mediating the symptoms through stress and annoyance, by the odorants or co-existing compounds or by combined effects. Regarding annoyance, cognition and coping are important as well as odour pleasantness. Odour pleasantness for odours from pigs, poultry and cows showed a consistent decrease by concentration. Low concentrations of these odours are likely to be rated as quite unpleasant. An important factor affecting perceived odour pleasantness is the individual odour sensitivity.

Authors/Creators:Nimmermark, Sven
Title:Odour impact
Subtitle:odour release, dispersion and influence on human well-being with specific focus on animal production
Series Name/Journal:Acta Universitatis Agriculturae Sueciae. Agraria
Year of publishing :November 2004
Number of Pages:58
ALLI. Nimmermark, S. 2001. Use of electronic noses for detection of odour from animal production facilities: a review. Water Science and Technology 44, 33-41. II. Nimmermark, S. & Gustafsson, G. 2004. Influence of temperature, humidity and ventilation rate on the release of odour and ammonia in a floor housing system for laying hens. Submitted to an international peer reviewed journal. Nimmermark carried out odour measurements and parts of the other measurements. Nimmermark was responsible for analyzing the data and for writing the paper. III. Nimmermark, S., Jacobson, L.D., Wood Gay, S. & Schmidt, D. 2004. Predictions by the OFFSET odor setback model compared to observations by neighbourhood monitors. Submitted to an international peer reviewed journal. Nimmermark was involved to a minor extent in the experiment. Nimmermark was responsible for analyzing the data and for writing the paper. IV. Nimmermark, S. 2004. Odour influence on well-being and health with specific focus on animal production emissions. Submitted to an international peer reviewed journal. V. Nimmermark, S. 2004. Measurements of hedonic tone of odour from animal production facilities. VDI-Report 1850, 209-218. Reprints are reproduced by kind permission of the journals concerned.
Place of Publication:Alnarp
ISBN for printed version:91-576-6774-8
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:T Pollution > T01 Pollution
N Machinery and buildings > N10 Agricultural structures
Subjects:Not in use, please see Agris categories
Agrovoc terms:smell, olfaction, humidity, temperature, pollution, stress, health, agriculture, livestock, poultry
Keywords:odour measurement, olfactometry, electronic nose, emission, humidity, temperature, setback distance, stress, annoyance, health, agriculture, livestock, poultry
Permanent URL:
ID Code:692
Department:(LTJ, LTV) > Institutionen för jordbrukets biosystem och teknologi
Deposited By: Sven Nimmermark
Deposited On:17 Nov 2004 00:00
Metadata Last Modified:02 Dec 2014 10:06

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