Abstract
This paper reveals that ultrasonic jet atomization using a diaphragm enables the enclosure of microplastics in water into atomized mist, emitting them into the air. In particular, a strong correlation is found between the sizes of the atomized mist and the acrylic particles enclosed in the mist: Acrylic particles with an average diameter of 1.5 μm or smaller are selectively enclosed within the atomized mist with an average diameter of 2.2 μm. This result indicates that jet atomization has the ability to select particles with diameters of 1.5 μm or less from numerous micro-particles with different diameters and separate them into individual particles without aggregation. The results of this study can be applicable to the process of analyzing microplastics dispersed in rivers, lakes, and oceans for separating particles of a targeted diameter from numerous particles of different diameters without aggregation.
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