Chemistry: analytical and immunological testing – Metal or metal containing – Zn – cd – hg – sc – y – or actinides – or lanthanides
Reexamination Certificate
2006-12-05
2006-12-05
Soderquist, Arlen (Department: 1743)
Chemistry: analytical and immunological testing
Metal or metal containing
Zn, cd, hg, sc, y, or actinides, or lanthanides
C422S050000, C422S062000, C422S083000, C422S088000, C422S091000, C422S093000, C436S073000, C436S171000, C436S172000, C436S177000, C436S178000, C436S181000, C436S182000
Reexamination Certificate
active
07144736
ABSTRACT:
A method and an apparatus which continuously separate and measure mercury in an exhaust gas in accordance with each chemical conformation and display a measurement result in real time. According to the method and the apparatus, water-soluble mercury in a gas is absorbed into an absorption solution (7), the gas and the absorption solution (7) are then separated from each other, the water-soluble mercury in the absorption solution (7) is reduced to be converted into gaseous metal mercury and led to an analyzer (20), and metal mercury in the gas which is not absorbed into the absorption solution (7) is led to an analyzer (22) in the form of gas. As a result, the water-soluble mercury and the non-water-soluble mercury contained in the gas can be captured and measured/analyzed in respective measurement systems in accordance with each chemical conformation. In addition, a concentration of the metal mercury and that of the water-soluble mercury in the gas can be continuously monitored in real time. In this analysis, it is preferable to use the absorption solution (7) to absorb an acid gas which is an inhibitive component to mercury measurement, together with the water-soluble mercury.
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Hoshino Munehiro
Ito Shigeo
Marumoto Koji
Noda Naoki
Tanida Koji
Central Research Institute of Electric Power Industry
Nippon Instruments Corporation
Notaro & Michalos P.C.
Soderquist Arlen
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