X-ray fluorescence(XRF) analysis of single aerosol particles is a useful tool for identifying origins of aerosol particles.A micro-XRF spectrometer based on a monolithic capillary X-ray lens(MCXRL) and laboratory X-ray source is designed in order to carry out the XRF analysis of single aerosol particles.The order of magnitude of the gain of power density of the MCXRL is 103 at the focal spot,and the focal spot size of the MCXRL is about 30 μm.The minimum detection limit(MDL) of this spectrometer is 0.7 pg f...