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    • 5. 发明授权
    • Apparatus and method for analyzing particulate matter in gas and apparatus and method for carbon differentiating
    • 用于分析气体中的颗粒物质的装置和方法以及用于碳分解的方法
    • US06516654B2
    • 2003-02-11
    • US09730361
    • 2000-12-05
    • Hiroshi UchiharaJunji OkayamaAtsushi BandoMasahiko IkedaMasayuki AdachiIchiro AsanoHirokazu Fukushima
    • Hiroshi UchiharaJunji OkayamaAtsushi BandoMasahiko IkedaMasayuki AdachiIchiro AsanoHirokazu Fukushima
    • G01N100
    • G01N15/0618G01N15/0637G01N30/12G01N33/004G01N33/0042Y02A50/243Y02A50/244Y02A50/248Y02A50/25
    • The present invention provides a method for analyzing particulate matter in a gas for analyzing simply and with high precision the particulate matter in an engine emission and an apparatus therefor by which dry soot, SOF and sulfate in PM contained in an engine emission can be fractionated individually even in a trifle amount. The present invention further provides a carbon differentiating and analyzing apparatus capable of differentiating and analyzing with precision the organic carbon and the elemental carbon contained in a sample and capable of performing a predetermined analysis with precision in a short time by reducing the period of time required for the analysis. The present invention is constituted such that a heating furnace is provided with a filter which has caught PM contained in engine emission. The filter is heated at a predetermined temperature while passing an inert gas into the heating furnace to evaporate the SOF and sulfate contained in PM. The evaporated SOF is oxidized into CO2 and the evaporated sulfate is reduced into SO2. The CO2 and SO2 are analyzed with a gas analyzer unit, and thereafter, the filter is heated while passing oxygen into the heating furnace to oxidize the PM remaining on the filter to have it generate CO2. The CO2 is analyzed with the. gas analyzer unit. The present invention is constituted such that a thermal decomposition tube includes, successively from its upstream side a carrier gas inlet, a low temperature heating portion for evaporating organic carbon in the sample, and a high temperature heating portion for thermally decomposing elemental carbon in the sample, whereby the organic carbon is separated in the low temperature heating portion and the elemental carbon is separated in the high temperature heating portion.
    • 本发明提供了一种用于分析气体中的颗粒物质的方法,用于简单且高精度地分析发动机排放物中的颗粒物质及其装置,通过该方法可以单独分馏发动机排放物中含有的PM中的干烟灰,SOF和硫酸盐 即使在一个小的数量。 本发明还提供一种能够精确地对样品中含有的有机碳和元素碳进行微分析和分析的碳分析分析装置,能够在短时间内精确地进行规定的分析,通过减少所需的时间 分析。 本发明的结构使得加热炉设置有捕获发动机发射的PM的过滤器。 将过滤器加热至预定温度,同时将惰性气体通入加热炉中,蒸发PM中所含的SOF和硫酸盐。 蒸发的SOF被氧化成CO 2,蒸发的硫酸盐还原成SO 2。 用气体分析装置对二氧化碳和二氧化硫进行分析,然后在将氧气通入加热炉内加热过滤器,氧化残留在过滤器上的PM,使其产生二氧化碳。 用二氧化碳分析。 气体分析仪。 本发明构成为:热分解管从其上游侧依次包括载气入口,用于蒸发样品中的有机碳的低温加热部和用于热分解样品中的元素碳的高温加热部 由此,有机碳在低温加热部分分离,元素碳在高温加热部分分离。