The focus of this study was to determine the viability of selectively mining low-Hg coal based upon mercury (Hg) distribution from within a lignite seam. This study was part of a large research effort investigating maximum attainable control technologies to be potentially implemented by power plants in order to meet near-future mandates imposed by the Clean Air Mercury Rule. Understanding the distribution of Hg throughout a coal seam is important for coal burning electrical utilities in evaluating Hg emission reduction technologies and practices. This research measured Hg concentrations in three detailed (0.10 ft. segments) and 28 regular lignite cores (sectioning based on visual mineral/lithotype content changes). ASTM Method 6414-01 was modified for a Perkin Elmer AAnalyst 700 Spectrophotometer with FIAS 100 (flow injection analysis system) to optimize instrumental sensitivity, accuracy, and precision when measuring mercury in lignite coal. (Abstract shortened by UMI.)
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