哈尔滨工业大学的科研人员研制出了一种能直接测量煤燃烧产生的工业NO2排放量的低成本蓝光LED探测技术。与其他同精度的光学技术相比,这是一种实时、简便的方法。NO2是一种主要的空气污染物,但其吸收谱非常宽难于测量。先前的方法是利用氙弧灯 Researchers at Harbin Institute of Technology have developed a low-cost blue LED detection technology that directly measures industrial NO2 emissions from coal combustion. This is a real-time, easy way to compare with other optical technologies of the same precision. NO2 is a major air pollutant, but its absorption spectrum is very wide and difficult to measure. The previous method used Xenon arc lamps