Study of the volatile organic compounds (VOCs(in the exhaust air from low heat sterilizer devices of four hospitals in Tehran city in 2011
Message:
Abstract:
Background And Aims
Application of low heat devices was increased for infectious waste sterilizing in many hospitals in Iran. Studies have shown that generation of volatile organic compounds (VOCs) and hazardous materials is most probable in the exhaust air of these devices. The main objective of this research is study of the volatile organic compounds (VOCs (in the exhaust air from low heat sterilizer devices of four hospitals in Tehran city.
Methods
This research was accomplished in some hospitals which use a sterilizer device such as: Hydroclave, Autoclave-shredder, Autoclave without shredder and Heat dryer. Ten samples were taken from each device every week from April to July 2011. Sampling was done by NIOSH 1501 method. Samples were analyzed in two qualitative and quantitative phases by GC-MASS and the obtained results were compared with occupational exposure short term limits (OEL- STEL) related to center for environmental and occupational health, Iranian ministry of health.
Results
In the first phase of research (qualitative analysis), only BTEX compounds (Benzene, Toluene, Ethyl Benzene and Xylene) were observed in 90% of samples. Based on the results of the second phase, the highest and the lowest concentration of BTEX with 9.35 ppm and 1.25 ppm were related to Autoclave-shredder and Autoclave without shredder, respectively. According to exhaust air clarity, Autoclave without shredder, Hydroclave, Heat dryer and Autoclave-shredder were scored from 1 to 4, respectively.
Conclusion
The concentration of Benzene, Toluene, Ethyl Benzene and Xylene in all samples were lower than the occupational exposure short term limits. Presence of volatile organic compounds in a large number of samples, due to the short lifetime of these devices (between 3 to 9 months), confirmed that there is a high risk potential for these devices. So, the monitoring of exhaust air quality of these devices was very appreciated.
Language:
Persian
Published:
Iran Occupational Health, Volume:11 Issue: 1, 2014
Page:
44
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