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Accession number;03A0275222
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| Title;Risk Assessment of Chemicals Used in Educational Courses of University-A Case Study on Infringement of Comfort by Odor of Volatile Compound- |
| Author;
SEKINE YOSHIKA
(Tokai Univ., School of Science)
MASUDA FUMINORI
(Tokai Univ., School of Science)
HASHIMOTO SHIN'ICHIRO
(Tokai Univ., School of Science)
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Journal Title;Proc Sch Sci Tokai Univ
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Journal Code:S0439A
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ISSN:0919-5025
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VOL.38;NO.;PAGE.195-205(2003)
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| Figure&Table&Reference;FIG.5, REF.13 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Most of chemicals have acute or chronic toxicity to people or other living things. Risk assessment of chemicals is a basic demand to build up environmental management systems even in educational courses of university where many chemicals are used in experimental subjects of chemistry. Then, authors conducted a case study on exposure and environmental assessment of volatile compounds used in the educational experiment on chemistry. Since amounts of reagents used were small, endpoint of this study was set on infringement of comfort by odor of ammonia according to its volatile property and relatively higher volume of use. A personal diffusion sampler was introduced to determine exposure concentrations of instructors and students during the experiment. The highest concentration was found in the sampler attached to one student who used ammonia solution and resulted in 1.4 ppm which equaled to odor threshold of ammonia. This suggests more air ventilation should be needed to avoid uncomfortable odor. Based on measurements of indoor concentration of ammonia in the class, we estimated atmospheric concentration of ammonia at the edge of the campus using an air diffusion model. The estimated highest concentration was 1.0*10-3 ppm and much less than allowable level by law and odor threshold. This means that residents living near campus have no possibility to be annoyed from ammonia. (author abst.) |
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