请介绍一下测汞仪！

Milestone DMA-80测汞仪，EPA7473方法制定仪器。
链接：
http://www.instrument.com.cn/netshow/SH100523/C11082.htm

该方法在“6.0 EQUIPMENT AND SUPPLIES”这样写道：“6.2 The DMA 80 automatic mercury analyzer (Milestone, Inc.) is the instrument used for the scheme outlined above. It has been tested for use with this method. ”（大意：上面所描述方案用的仪器是DMA 80自动测汞仪（Milestone, Inc.）。它已被证实可与本方法一起使用。）

EPA7473方法简介（1.0 SCOPE AND APPLICATION）：1.1 Method 7473 is designated for the determination of mercury (CAS No. 7439-97-6) in solids, aqueous samples, and digested solutions in both the laboratory and field environments. Integration of thermal decomposition sample preparation and atomic absorption detection reduces the total analysis time of most samples to less than five minutes in either the laboratory or field setting. Total mercury (organic and inorganic) in soils, sediments, bottom deposits, and sludge¬type materials as well as in aqueous wastes and ground waters can be determined without sample chemical pretreatment using this method, except as noted. Alternatively, this method can be used for the detection of total mercury from total decomposition sample preparation methods, such as Method 3052, or for detection of extracted or leached mercury compounds or species from methods such as the SW-846 3000 series methods (as detailed in Chapter Three).
7473方法是为分析实验室和野外环境固体样、水样和消解溶液中的汞而设计的。它整合了热解析样品前处理和原子吸收检测，使实验室或野外大部分样品的整个分析过程降低到5分钟以下。除特别说明外，不但水样废弃物和地下水，而且土壤、沉积物、底层沉淀物和污泥类物质中的汞（有机和无机）都可以直接通过这种方法检测而无须样品化学前处理。另外，这种方法还可以用于诸如3052方法等完全分解样品前处理方法中汞的检测，或从诸如SW-846 3000系列方法（第三章中详介）中萃取和过滤得来的汞化合物或种类的检测。