Evaluation of Microwave Digestion as the Preparation Method for Mercury-in-coal Measurement

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چکیده

The 1990 Clean Air Act Amendment (CAAA) empowered the U.S. Environmental Protection Agency (EPA) to set emission standards for a number of potentially hazardous air pollutants (HAPS) generated by a variety of specific combustion sources. Eleven elements (or compounds of these elements) present in coal are among the 189 pollutants identified as air toxics by the CAAA legislation. Mercury is included in this list. Generally mercury concentrations in coal are well below 1 ppm (1 pglg). However, because such a large tonnage of coal is consumed for electric power generation, coal combustion represents a potentially significant source of mercury entering the environment (I) .

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تاریخ انتشار 2006