Device and method for online measurement of trace water-soluble ions by collecting atmospheric fine particles
An atmospheric fine particle, water-soluble technology, which is used in measurement devices, preparation of test samples, material separation, etc., and can solve the problems of low content, easy reaction, and inability to realize real-time detection.
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[0034] (1) Put the collision type PM 2.5 The cutting head (7) is placed outside the window on the 6th floor of the Environment Building of Fudan University. 2.5 Under the action of cutting head (7), PM 2.5 Atmospheric fine particles with an aerodynamic equivalent diameter less than or equal to 2.5 microns are screened out and enter the water tank (9) relying on the suction provided by the main air circuit and the concentrated air circuit;
[0035] (2) Under the visible window (11), add deionized water to two-thirds of the height of the water tank, and use an electric heating rod (12) with a temperature sensor to heat the deionized water. The digital display device (13) controls the temperature at 35±2 degrees Celsius, so that the generated water vapor saturates the particles. The field experiment is carried out in summer, the ambient temperature is 25 degrees Celsius, the room temperature is 22 degrees Celsius, and the temperature of the water tank (9) is set at 35 degrees Ce...
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