Survival of Microorganisms on Filtering Respiratory Protective Devices Used at Agricultural Facilities
| Autor: | Katarzyna Majchrzycka, Anita Jachowicz, Justyna Szulc, Beata Gutarowska, Małgorzata Okrasa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Biocide
business.product_category filtering facepiece respirators (FFRs) Health Toxicology and Mutagenesis Microorganism lcsh:Medicine Air Pollutants Occupational 010501 environmental sciences 01 natural sciences Article Toxicology 03 medical and health sciences 0302 clinical medicine Occupational Exposure Humans Occupational exposure limit Respiratory Protective Devices Respirator Workplace microorganisms 0105 earth and related environmental sciences Moisture lcsh:R Public Health Environmental and Occupational Health Agriculture Contamination Particulates workplaces 030210 environmental & occupational health Environmental science dust business Bioaerosol |
| Zdroj: | International Journal of Environmental Research and Public Health, Vol 16, Iss 16, p 2819 (2019) International Journal of Environmental Research and Public Health Volume 16 Issue 16 |
| ISSN: | 1660-4601 |
| Popis: | Bioaerosol is a threat at workplaces, therefore the selection and safe use of filtering facepiece respirators (FFRs) is important in preventive activities. The aim of the study was to assess the survival of microorganisms on materials used for FFRs construction. The parameters for microorganism growth under model conditions were described using the Gompertz equation, model verification was also carried out using FFRs at the farmers&rsquo workplaces. We found that the factors determining a high survival of microorganisms were as follows: moisture corresponding to the conditions of use and storage of FFRs at workplaces, the presence of sweat and organic dust inorganic dust and addition of biocide in nonwovens limited the growth of microorganisms, resulting in a shortening of the stationary growth phase and decreased cell numbers (5&ndash 6 log). Dust concentration at workplaces was higher than EU occupational exposure limit values and WHO recommendations for airborne particulate matter. Microbial contaminations of the air (103&ndash 104 CFU/m3), settled dust (104&ndash 106 CFU/g) and FFRs (105 CFU/4cm2) during the grain harvest were high, the main contamination being bacteria (actinomycetes, Pseudomonas fluorescens) and xerophilic fungi. A high correlation was found between the number of microorganisms and the weight of dust on FFRs (R2 = 0.93&ndash 0.96). |
| Databáze: | OpenAIRE |
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