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首页> 外文期刊>Aerosol and Air Quality Research >An Efficient Multipollutant System for Measuring Real-World Emissions from Stationary and Mobile Sources
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An Efficient Multipollutant System for Measuring Real-World Emissions from Stationary and Mobile Sources

机译：用于测量固定和移动源实际排放量的高效多污染物系统

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A portable dilution sampling and measurement system was developed for measuring multipollutant emissions from stationary and mobile sources under real-world operating conditions. This system draws a sample of exhaust gas from the source, dilutes it with filtered air and quantifies total volatile organic compounds (VOCs), carbon monoxide (CO), carbon dioxide (CO2), nitric oxide (NO), nitrogen dioxide (NO2), sulfur dioxide (SO2), oxygen (O2), particle size distribution, particle number and mass concentrations, and black carbon (BC) concentration at 1–6 sec interval. Integrated samples by canisters and filter packs are acquired for laboratory analyses of VOC speciation, particle mass concentration, light absorption, elements, isotopes, ions, ammonia (NH3), hydrogen sulfide (H2S), sulfur dioxide (SO2), carbon, and organic compounds. Experiments were carried out to evaluate this system. The accuracy of key real-time instruments were found to deviate < ± 12% from references. CO2 was used as the tracer gas to verify the concentration uniformity in the three measurement modules and relative concentration difference was < 5.1%. Instrument response time was tested by emissions from lighting and burning matches. The DustTrak DRX and optical particle counter (OPC) had the fastest response time, while other instruments had 3.5–21.5 sec delay from the DustTrak DRX and OPC. This system was applied to measure emissions from burning pine logs in a wood stove. The real-time data showed flaming, transition, and smoldering phases, and allowed real-time emission ratios to be calculated. Combing real-time data and laboratory analysis, this measurement system allows the development of multipollutant emission factors and source profiles.
机译：开发了一种便携式稀释采样和测量系统，用于在实际操作条件下测量固定源和移动源的多种污染物排放。该系统从排放源中抽取废气样品，用过滤后的空气稀释并量化总挥发性有机化合物（VOC），一氧化碳（CO），二氧化碳（CO2），一氧化氮（NO），二氧化氮（NO2） ，二氧化硫（SO2），氧气（O2），粒度分布，颗粒数量和质量浓度以及1-6秒间隔内的黑碳（BC）浓度。通过滤罐和滤袋获得的集成样品用于实验室分析VOC形态，颗粒质量浓度，光吸收，元素，同位素，离子，氨（NH3），硫化氢（H2S），二氧化硫（SO2），碳和有机物化合物。进行了实验以评估该系统。发现关键实时仪器的准确度与参考相比偏差<±12％。使用CO2作为示踪气体，以验证三个测量模块中的浓度均匀性，并且相对浓度差<5.1％。仪器响应时间通过照明和燃烧火柴的排放量进行测试。 DustTrak DRX和光学粒子计数器（OPC）的响应时间最快，而其他仪器比DustTrak DRX和OPC延迟3.5–21.5秒。该系统用于测量在木炉中燃烧松木的排放量。实时数据显示出燃烧，过渡和阴燃阶段，并允许计算实时排放比。结合实时数据和实验室分析，该测量系统允许开发多种污染物的排放因子和源曲线。

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