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7 GUIDELINES FOR CYANIDE
Pages 49-54

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From page 49...
... Cyanide is primarily an environmental contaminant of industrial processes and usually enters the drinking water as industrial waste. It is used in the metal-processing industry for electroplating, heat treating, and metal polishing (California State Water Resources Control Board, 1963; leeks, 1979)
From page 50...
... Table 7-1 lists Me whole-blood cyanide concentrations at which health effects occur in animals and humans. ~ In the table, the first six entries are examples of "background" concentrations of cyanide measured In healthy people.
From page 51...
... CSNP, sodium nitroprusside. Blood concentration after a lethal dose (intraperitoneal administration)
From page 52...
... Therefore, mean blood cyanide concentrations are not necessarily indicative of toxicity. Other symptoms noted for the workers including pain and irritation in the throat and eyes are attributable to the irritating properties of the alkali cyanide salt aerosols rather than to cyanide itself (NIOSH, 19761.
From page 53...
... (1988) concluded that a blood cyanide concentration of 0.5 mg/L is a reasonable threshold concentration for changes in blood chemistry and that clinical symptoms of cyanide intoxication are likely above a concentration of approximately 2 mgiL.


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