Chemical exposures in research laboratories in a university.
Research laboratories in a university were investigated for air-borne levels of legally designated organic solvents and specified chemical substances. Repeated surveys in 2004-5 (four times in the two years) of about 720 laboratories (thus 2,874 laboratories in total) revealed that the solvent concentrations were in excess of the Administrative Control Levels only in a few laboratories (the conditions improved shortly after the identification) and none with regard to specified chemicals. Thus, working environments were in Control Class 1 in almost all (99.5%) laboratories examined. Such conditions were achieved primarily by extensive installation and use of local exhaust systems. The survey further revealed that types of chemicals used in research laboratories were extremely various (only poorly covered by the regulation) whereas the amounts of each chemical to be consumed were quite limited. For protection of health of researchers (including post- and under-graduate students) in laboratories, therefore, it appeared more appropriate to make personal exposure assessment rather than evaluation of levels of chemicals in air of research laboratories. Considering unique characteristics of research activity, it is important to educate each researcher to make his/her own efforts to protect his/her health, through supply of knowledge on toxicity of chemicals as well as that on proper use of protective equipments including exhaust chambers.
Takada
Shiro
S
Kyoto Industrial Health Association, Japan.
Okamoto
Satoru
S
Yamada
Chikahisa
C
Ukai
Hirohiko
H
Samoto
Hajime
H
Ohashi
Fumiko
F
Ikeda
Masayuki
M
D000395:Air Pollutants, Occupational / Q000032:analysis*; D006801:Humans; D007564:Japan; D007753:Laboratories; D019995:Laboratory Chemicals / Q000032:analysis*; D016273:Occupational Exposure / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis*; D012997:Solvents; D014495:Universities
D000395:Air Pollutants, Occupational; D019995:Laboratory Chemicals; D009930:Organic Chemicals; D012997:Solvents