| 摘要 |
PROBLEM TO BE SOLVED: To highly precisely detect mercury in exhaust gas according to individual chemical form by suppressing production of hardly-soluble mercury and reduction of oxidized mercury during sampling the exhaust gas. SOLUTION: This method includes a first step in which a gas 11 sampled by introducing into a conduit 2 is contacted with a first solution 3 for absorbing oxidized mercury to collect the oxidized mercury in the gas, a second step in which gas out of the collection into the first solution in the first step is contacted with a mercury collector 5 for capturing metal mercury or a second solution 21 for absorbing metal mercury to collect metal mercury in the gas, and a third step in which the concentration of the oxidized mercury collected into the first solution in the first step and the concentration of the metal mercury collected into the solid or the second solution in the second step are respectively measured. In the first step, the gas flowing in the conduit is gradually cooled along the gas flow direction. COPYRIGHT: (C)2011,JPO&INPIT
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