[Waste sorting plants--recognition of exposure to biological agents (moulds)].

BACKGROUND The aim of the study was to recognize exposure to biological agents in the air of waste sorting plants. This publication contains the characteristics of technical solutions in use during sorting of waste and the results of quantitative analysis in terms of the presence of moulds and inhalable dust in the air. MATERIAL AND METHODS The study was conducted in the summertime inside two waste sorting plants with different production capacity ("big" and "small"). To evaluate inhalable dust in the air, 53 samples were collected using personal samplers on glass fiber filters. To assess mycological contamination of the air, 30 triple samples were directly collected on Petri dishes (Malt Extract Agar medium), using the volumetric impact method in the worker's respiratory zone. Samples were incubated for 5 days at 30 degrees C. Outcomes of the total number of moulds were provided in cfu/m3 (cfu--colony forming units). RESULTS The mean concentration of inhalable dust, determined in the "big" waste sorting plant, was 2.38 mg/m3 and in the "small" plant 1.12 mg/m3. The quantitative analysis revealed the following values of the total number of moulds present in the air: 1) "big" waste sorting plant, 2.9 x 10(4) cfu/m3 (work premises) and 3.6 x 10(3) jtk/m3 (office premises); 2) "small" waste sorting plant, 7.8 x 10(4) cfu/m3 (work premises) and 2.5 x 10(3) jtk/m3 (office premises). CONCLUSIONS Mould concentrations determined in the environment of waste sorting plants were high. To protect health of workers in this kind of plants, preventive programs focused on the protection of the skin and respiratory system should be implemented. Offices should be properly isolated from work premises to minimize spreading of inhalable dust.

[1]  N O Breum,et al.  Sorting and recycling of domestic waste. Review of occupational health problems and their possible causes. , 1995, The Science of the total environment.

[2]  Xavier Solans,et al.  [Occupational exposure to airborne fungi and bacteria in a household recycled container sorting plant ]. , 2007, Revista iberoamericana de micologia.

[3]  J. Thorn,et al.  Seasonal variations in exposure to microbial cell wall components among household waste collectors. , 2001, The Annals of occupational hygiene.

[4]  Benjamin Bach,et al.  Occupational Health Problems Due To Garbage Sorting , 1992 .

[5]  Suzanne Spaan,et al.  Overview of personal occupational exposure levels to inhalable dust, endotoxin, beta(1-->3)-glucan and fungal extracellular polysaccharides in the waste management chain. , 2006, The Annals of occupational hygiene.

[6]  Jacek Dutkiewicz,et al.  Bacteria and fungi in organic dust as potential health hazard , 1997 .

[7]  Rafał L. Górny,et al.  Biologiczne czynniki szkodliwe: normy, zalecenia i propozycje wartości dopuszczalnych , 2004 .

[8]  A. J. Streifel,et al.  ELEVATED AIRBORNE CONCENTRATIONS OF FUNGI IN RESIDENTIAL AND OFFICE ENVIRONMENTS , 1990 .

[9]  S C van der Zee,et al.  Occupational exposure and indoor air quality monitoring in a composting facility. , 1995, American Industrial Hygiene Association journal.

[10]  Jagjit Singh,et al.  Toxic Moulds and Indoor Air Quality , 2005 .

[11]  Jacek Dutkiewicz,et al.  Bacterial and fungal aerosols in indoor environment in Central and Eastern European countries. , 2002, Annals of agricultural and environmental medicine : AAEM.

[12]  J. Douwes,et al.  Bioaerosol health effects and exposure assessment: progress and prospects. , 2003, The Annals of occupational hygiene.

[13]  M Köck,et al.  Comparative investigations of airborne culturable microorganisms in selected waste treatment facilities and in neighbouring residential areas. , 1999, Zentralblatt fur Hygiene und Umweltmedizin = International journal of hygiene and environmental medicine.