Regulation respecting mercury - made under the Occupational Health and Safety Act Jurisdiction Canada - Ontario Year 1987 Published in English Source Ontario Ministry of Labour, Occupational Health and Safety Division, 400 University Ave., Toronto, Ont. M7A 1T7, Canada, 1987. 85p. Index. Serial number Ontario Regulation 141/82 Descriptors [Primary] Canada, Ontario, limitation of exposure, mercury, mercury and compounds, threshold limit values [Secondary] alkylmercury compounds, description of technique, determination in air, determination in blood, determination in urine, directive, law, medical supervision, sampling and analysis Subject category Chemical safety Abstract The Regulation (effective 9 March 1982, modified by Ontario Regulation 23/87 of 21 Feb. 1987) prescribes mercury (Hg) as a designated substance. Exposure limits for airborne mercury: TWA exposure - 0.05mg Hg/m3 (alkyl mercury compounds: 0.01mg Hg/m3); maximum concentration: 0.15mg Hg/m3 (alkyl mercury compounds: 0.03mg Hg/m3). Responsibilities of employers, rights of workers, contents of a control programme and requirements for medical monitoring and recordkeeping are outlined. Also included in the publication: codes for respiratory equipment; determination of Hg in blood and urine, measuring airborne Hg and medical surveillance for Hg. CIS No. 89-706 Database ID 51861