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cretion of trichloroacetic acid, 100 r,.-_ being associated with an 17. Haas,P.A.: In, hygienische Untersuc hungen uber das Trichloro-
<br /> 8-hour exposure to 30 ppm of trichloroethylene,time-weighted ex- aethylen. Thesis No. 2979. Technische Hochschule, Zurich (1960).
<br /> posure. Another recent study"" looked at the mortality of 2117 18. Grandjean,E.,R.Muchinger,V.Turrian et al:Brit.1.Ind.Med. 12:131
<br /> - workers exposed to trichloroethylene in Finland between 1963 and (1955).
<br /> 1976 and found no correlation between cancer and occupational 19. Bardodej, Z- and J. Vyskocil:Arch. Ind. Health 73:581 (1956).
<br /> exposure. 20. Lillis, R., D.Stanescu, N.Mucia et all:Med. d. Lavoro 60:595 (1969).
<br /> A TLV of 50 ppm, as a time-weighted average, is recommended 21. Stopps,G.J.and M.McLaughlin:Am.Ind.Hyg.Assoc.J. 28:43(1967).
<br /> to control subjective complaints such as headaches, fatique, and 22. Stewart, R.D., N.C. Dodd, H.N. Gay et a1:Arch. Env. Health 20:64
<br /> irritability. A STEL of 200 ppm is recommended to protect against (1970)_
<br /> incoordination and other beginning anesthetic effects form trichloro- 23. Stewart,R.D.,C.L.Hake,H.V.Forster et all:Trichloroethylene:Develop-
<br /> ethylene. These levels provide a wide margin of safety in prevent- ment of a Biological Standard for the Industrial Worker by Breathing
<br /> ing liver injury. Currently, this substance is under review by the Analysis, pp. 11-13. NIOSH-MCOW-TCE-74-8.wledical College of Wis-
<br /> Committee. consin, Milwaukee, WI (1974).
<br /> 24. Triebig,G.,H.G.Essing,K.H.Schaller and H.Valentin:Sbl.Bakt.Hyg.
<br /> 1. AbL Orig. B. 163:383 (1976).
<br /> 25. Ertle,T., D. Henschler, G.Muller and M.Spassowski:Arch. Toxikol.
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<br /> .died. 4:469 (1951). 37. Stott,W.T.,J.F.Quast and P.G.Watanabe:Tox.Appl. Pharm, 82:137
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