Factors affecting the excretion of industrial poisons.
Massachusetts Department of Labor and Industries, Division of Occupational Hygiene, Boston, Massachusetts, 1974 Jan; :1-4
A study of the effects of methylene-chloride (75092) exposure on carboxyhemoglobin of workers in a plastic film plant indicates that nonsmoking workers at the end of the work shift with carboxyhemoglobin of 10 percent have exposures to methylene chloride in excess of a CGIH TLV of 250 ppm for that solvent. Three methods of expressing urine concentration of toxic compounds and their metabolites are discussed. A study of benzene (71432) exposure in the rubber coating industry is reviewed. A good correlation is found between exposure and urinary mercury (7439976) excretion in a study of the hazards of vacuum cleaning the rugs in a dental office. Mercury elimination takes a long time to complete even after the stoppage of exposure. Surveillance of workers exposed to chloroform (67663) shows the need for regular blood tests and urine tests. Methyl-ethyl-ketone (78933) is not metabolized to any great extent, but rapidly excreted in the urine, returning to normal levels overnight.
NIOSH-Grant; Toxic-substances; Blood-analysis; Rubber-industry; Urinalysis; Mercury-poisoning; Blood-disorders
Labor and Industries 39 Boylston Street Boston, Mass 02116
75-09-2; 71-43-2; 7439-97-6; 67-66-3; 78-93-3
Final Grant Report
Massachusetts Department of Labor and Industries, Division of Occupational Hygiene, Boston, Massachusetts, 4 pages, 5 references
Massachusetts Dept of Labor & Industries, Boston, Massachusetts