摘要: The volume of the draft Mercury Study Report to Congress describes mercuryemissions from anthropogenic emissions summary estimates national mercury emissions rates by source category for area and point sources including combustion... 展开 The volume of the draft Mercury Study Report to Congress describes mercuryemissions from anthropogenic emissions summary estimates national mercury emissions rates by source category for area and point sources including combustion, manufacturing and miscellaneous point sources. Combustion point sources that dominate anthropogenic emissions are these: medical waste incineration, municipal waste combustion, utility boilers, and commercial/industrial boilers. National emission estimates are based on data from a 1990-1993 time-frame. Within the United States, numerous industrial and manufacturing processes contribute mercury emissions to the atmosphere. Sources of uncerainty and variability in these emissions categories are described in this volume. Data needed to improve these estimates are described in this volume. 收起