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    • 82. 发明申请
    • METHOD AND APPARATUS FOR DETECTING THE PRESENCE OF ELEMENTAL MERCURY IN A GAS SAMPLE
    • 用于检测气体样品中元素汞的存在的方法和装置
    • WO2006119424A2
    • 2006-11-09
    • PCT/US2006/017144
    • 2006-05-02
    • THERMO ELECTRON CORPORATIONGRASSI, James H.APPEL, DirkKITA, DieterSOCHA, Jeffrey
    • GRASSI, James H.APPEL, DirkKITA, DieterSOCHA, Jeffrey
    • G01N33/00
    • B01D53/64B01D53/30G01N33/0013G01N33/0045
    • An improved elemental mercury analyzer utilizes a fluorescence assembly in combination with a fluorescence quenching reduction mechanism to detect the concentration of elemental mercury within an emission gas sample, via fluorescence of the mercury within the gas sample, while minimizing fluorescence quenching of the gas sample. In one arrangement, the analyzer contains the emission gas sample under a vacuum or negative pressure while detecting fluorescence of the elemental mercury within the emission gas sample. By performing fluorescence detection of the emission gas sample at reduced pressure relative to the pressure of the as-sampled emission gas, the analyzer reduces the number of particle collisions within the emission gas sample over a certain period of time. Such collisional deactivation, and/or the addition of oxygen depleted gas such as nitrogen to the gas sample, reduces fluorescence quenching of the emission gas sample, improving accuracy of detection of mercury.
    • 改进的元素汞分析仪利用荧光组合与荧光淬灭降低机制结合,以通过气体样品中汞的荧光检测发射气体样品中的元素汞的浓度,同时最小化气体样品的荧光猝灭。 在一种布置中,分析仪在真空或负压下包含发射气体样品,同时检测排放气体样品中的元素汞的荧光。 通过相对于采样排放气体的压力在减压下进行发射气体样品的荧光检测,分析仪在一定时间内减少了排放气体样品内的颗粒碰撞次数。 这种碰撞失活和/或向气体样品中添加贫氧气体如氮气可以减少发射气体样品的荧光猝灭,提高汞的检测精度。
    • 83. 发明申请
    • METHOD AND APPARATUS FOR GENERATING OXIDIZED MERCURY HAVING A MEASURABLE CONCENTRATION
    • 用于产生具有可测量浓度的氧化汞的方法和装置
    • WO2006119193A1
    • 2006-11-09
    • PCT/US2006/016636
    • 2006-05-02
    • THERMO ELECTRON CORPORATIONGRASSI, James, H.KITA, Dieter
    • GRASSI, James, H.KITA, Dieter
    • B01D47/00
    • B01D53/64B01D53/30G01N33/0013G01N33/0045
    • A calibration assembly generates oxidized mercury in known concentrations for calibrating components of a mercury monitoring system. The calibrator generates an elemental mercury stream having a known elemental mercury concentration, [Hg 0 ] 1 , and combines an oxidizing component with the elemental mercury stream, thereby reducing the concentration of elemental mercury [Hg 0 ] 2 within the sample. The calibrator measures the concentration of elemental mercury [Hg 0 ] 2 within the stream and calculates a difference between the known elemental mercury concentration, [Hg 0 ] 1 and the reduced concentration [Hg 0 ] 2 . The difference between [Hg 0 ] 1 and [Hg 0 ] 2 is substantially equal to the concentration of oxidized mercury produced by the calibrator. By providing oxidized mercury at a known concentration, the calibrator allows a user to calibrate continuous emission monitoring systems for accurate response to both elemental mercury and oxidized mercury.
    • 校准组件产生已知浓度的氧化汞,用于校准汞监测系统的组件。 校准器产生具有已知元素汞浓度的元素汞流,并将氧化组分与元素汞流结合,从而降低浓度 样品中的元素汞[Hg 2+] 2 。 校准器测量流内元素汞的浓度,并计算已知元素汞浓度[Hg] 0 ] 1&lt; 1&gt;和降低的浓度[Hg 2 O 2] 2。 [Hg <0> 0> 1 和[Hg 2 O 2] 2之间的差异基本上等于氧化的 由校准器产生的汞。 通过提供已知浓度的氧化汞,校准器允许用户校准连续排放监测系统,以准确响应元素汞和氧化汞。