Particle tracking analysis (PTA) method using scattered light and apparatus for detecting and identifying particles of nanometer order size in any liquid

摘要

A method and apparatus for optically detecting particles (23) having the following features. (A) a cell wall (9) having a rectangular cross section and formed of black glass is attached to an L-shaped heating / cooling part (1) through its longitudinal and transverse planes, (b) a cell wall , The center of the lateral surface opposite to the lateral surface attached to the heating / cooling part (1) is irradiated by the illumination device, the cell wall (9) is observed from the direction orthogonal to the optical axis of the irradiation equipment by the observation device, and c) the focus of the irradiating device and the focus of the observation device are motorized by the control device to any position in the three-dimensional internal region defined by the cell wall (9), (d) in the cell wall (9) A further optical glass window is provided at the center of the surface facing the optical glass window through which the light irradiated from the thermistor passes, and (e) the surface temperature of the cell wall is higher than that of the two thermistors It is monitored by.(FIG.