使用DMA-80直接测汞仪测定煤灰中的汞含量（英文版）

The US EPA has recently announced that it will begin to regulate em ission of mercury from coal-fired plants, the largest source of hum an-made mercury pollution, generating approximately 43 tons of merc ury each year. Mercury is released not only in stack gasses, but i n plant waste and the coal cleaning process. The EPA will propose f inal regulations on coal-fired power plants by December 15, 2003. Mercury in coal has been traditionally measured by CVAAS (Cold Vapo r Atomic Absorption Spectrophotometry), which is a time and labor c onsuming method that relies on complicated wet chemistry sample pre paration. The DMA-80 Direct Mercury Analyzer from Milestone eliminates the sa mple preparation step, allowing you to completely process your coal samp le in about 10 minutes, instead of the hours needed for traditiona l methods. This rapid testing (which is as accurate, if not more s o, that CVAAS) gives you the answers you need without consuming val uable time and effort. Other benefits include: Process both liquid and solid samples – no matter the matrix you w ill get an accurate total mercury reading. Process coal, coal ash, sludge, etc… The built-in 40-position autosampler allows unattended operation fo r a large number of samples The DMA-80 is portable enough to be stationed where you need it mos t. Sample the coal deliveries as they come in and the plant waste befo re it goes out. No chemicals are used in the process so no additional toxic wastes are generated. Completely compatible with US EPA Method 7473 and ASTM Method D672 2-01