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  • Title: Volatile organic compounds in dwelling houses and stables of dairy and cattle farms in Northern Germany.
    Author: Beck JP, Heutelbeck A, Dunkelberg H.
    Journal: Sci Total Environ; 2007 Jan 01; 372(2-3):440-54. PubMed ID: 17118427.
    Abstract:
    Farmers are exposed to a complex mixture of airborne substances which can represent a health hazard. Especially animal production on a farm can be a risk factor for respiratory diseases. Most studies in this context focused on bioaerosols, compounds attached to bioaerosols or on gases such as ammonia or hydrogen sulfide. Less attention was paid to volatile organic compounds (VOCs) which may also cause respiratory diseases. This pilot study presents results of measuring VOCs in the air of the dwellings and stables, as well as in the outdoor environment, of cattle farms in Northern Germany in spring and autumn. Farmers on all selected farms complained of symptoms such as asthma, rhinitis and conjunctivitis which occurred especially during work in the stable but also in the dwellings. The mean concentration of total VOC (TVOC) for the outdoor environment, the dwellings, and the stables were 100 microg m(-3), 763 microg m(-3), 322 microg m(-3) in spring and 143 microg m(-3), 544 microg m(-3), 595 microg m(-3) in autumn, respectively. There was no significant difference in season. TVOC concentrations in dwellings on farms were elevated when compared to dwellings in other environments, probably because of an additional exposure to fuels and chemicals used in agriculture. Aliphatic and alicyclic hydrocarbons, aromatic compounds, and terpenes were main compounds of the dwellings and ketones, alcohols, and esters of the stables. Terpene concentrations in the stables were low probably because straw, which was not a strong terpene emitter, was used instead of sawdust as floor covering. Large amounts of methylethylketone were encountered in the air of one stable, probably from animal exhalation caused by increased animal activity. However, it was unlikely that this caused respiratory symptoms. Generally it was likely that the concentrations of VOCs were too low to have health effects on their own. On the other hand, the VOC concentrations were in a multifactor concentration range in which health effects could occur depending on the interaction with other exposure factors. Fungal spores and bacteria were observed in addition to VOCs at the examined locations. Therefore it is possible that the observed VOCs played a role in exacerbating respiratory symptoms in this multifactor exposure.
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