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Received April 08, 1992,Revised , Accepted , Available online

Volume 4,1992,Pages 116-121

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Total suspended particles (TSP),sulphur dioxide (SO2),polycyclic aromatic hydrocarbons (PAHs)and inorganic metal elements(IME)in the emission from coal boilers used in factory and power station,and the mutagenicities of extract materials of the stack samples were measured and discussed.When coal briquettes were burned instead of conventional raw coal for boilers,the TSP and SO27 emission decreased approximately by 60—70%and 40-50%respectively.as well as the Ames mutagenicities of emissions from burning coal briquettes are lower than those from the latter.

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