• IPCC National Greenhouse Gas Inventories Programme now focusing on emission estimation of aerosols relevant to climate change there is a need to measure black carbon levels in the atmosphere at microgram per cubic metre or lower mass concentrations • emission standards for Diesel particulate matter (PM) are being lowered dramatically, resulting in the adoption of Diesel particulate filters (DPFs) by manufacturers there is a need to measure solid carbon levels in the exhaust and in dilution tunnels at microgram per cubic metre or lower mass concentrations • develop high sensitivity LII to measure soot concentration at ambient levels for monitoring emissions from post-2007 Diesel engines, urban air quality, black carbon in atmosphere, and emissions from aircraft at altitude 激光誘導(dǎo)白熾光（LII）煙氣分析儀 德國(guó)LaVision PIV/PLIF粒子成像測(cè)速場(chǎng)儀 PLIF平面激光誘導(dǎo)熒光火焰燃燒檢測(cè)系統(tǒng)