Seedorf J, Schröder M, Hartung J
Institut für Tierhygiene und Tierschutz der Tierärtzlichen Hochschule Hannover.
Zentralbl Hyg Umweltmed. 1998 Dec;201(4-5):387-403.
In a field study emissions and immissions (receptor exposition) of bioaerosols emitted from and near a duck fattening house (25 m distance) were investigated. Within the livestock building mean concentrations of 3,342,289 CFU m-3 for airborne total mesophilic bacteria were determined. Total dust and endotoxin yields were 1.9 mg m-3 and 7,132.4 ng m-3, respectively. Additionally, enterobacteria, mesophilic and thermotolerante fungi as well as mesophilic actinomycetes were detectable. Measurements of immissions have shown, that downwind in the rear of the house a mean total germ concentration of 10,007 CFU m-3 was measurable in contrast to the upwind side of the building, where no airborne mesophilic bacteria were found. Higher concentrations downwind were generally determined for total dust, mesophilic fungi and actinomycetes, too, but not so for endotoxins. A supporting application of a numeric dispersion model confirmed the immissions for total mesophilic bacteria near by the duck fattening house. From this viewpoint immission predictions can be made in future for varying input data, i.e. wind conditions, of different components of bioaerosols.
在一项实地研究中，对一座鸭舍（距离25米）及其附近排放的生物气溶胶的排放和暴露（受体暴露）情况进行了调查。在畜舍内，测定了空气中总嗜温细菌的平均浓度为3,342,289 CFU/m³。总粉尘和内毒素产量分别为1.9毫克/立方米和7,132.4纳克/立方米。此外，还检测到了肠杆菌、嗜温和耐热真菌以及嗜温放线菌。暴露测量结果表明，与建筑物上风侧未发现空气中嗜温细菌相比，在鸭舍后方下风处可测量到平均总细菌浓度为10,007 CFU/m³。下风处的总粉尘、嗜温真菌和放线菌浓度通常也较高，但内毒素并非如此。数值扩散模型的辅助应用证实了鸭舍附近总嗜温细菌的暴露情况。从这个角度来看，未来可以针对生物气溶胶不同成分的不同输入数据（即风况）进行暴露预测。
