The invention discloses a condensation
nucleus particle counter for deducing chemical components of particulate matters. The condensation
nucleus particle counter comprises a sheath gas structure, a saturation chamber, a growth chamber, a flow sensor, an optical counter, a pulse
signal analyzer, a
mass flow controller and the like, wherein all the components are sequentially connected to form a sample gas path and a gas supplementing path; the optical counter is used for counting particulate matters and collecting
signal pulse heights; the pulse
signal analyzer is used for analyzing the pulse signals collected by the optical counter; the
mass flow controller is used for adjusting sample gas and gas supplementing flow, and the sample gas flow is changed under the condition that the gas
inlet flow is stable, so that rapid switching of the
supersaturation degree of working liquid in the growth chamber can be realized, and according to the relationship between the
moisture absorption parameters of the particulate matters and the
mass fractions of the organic matters, the
moisture absorption of the particulate matters with different particle sizes is measured by rapidly changing the
supersaturation degree, and the proportion of the organic matters in the particulate matters can be obtained; meanwhile, since the pulse signal heights of the particulate matters with the same particle size and different chemical components in the optical counter are different, the chemical components of the particulate matters can be deduced after instrument calibration.