HORIZONTAL COMPONENT CATCHER OF DUSTFALL IN ATMOSPHERE AND MEASURING METHOD OF HORIZONTAL COMPONENT

摘要

A horizontal atmospheric dustfall component trap includes: a dust sampling port that includes a ceiling plate, a side wall, and four or more partition plates; an air pipe; and a trap container, wherein the side wall is a plate that has a vertical center axis and has a side surface having a shape of a substantially circular truncated cone or a polygonal truncated cone widened upward, wherein the side wall is provided with four or more external air inlets each having an opening disposed at the same interval in the circumferential direction of the side wall and disposed at a specific height near the upper end thereof, wherein the ceiling plate has a substantially disk shape, wherein the center axis of the ceiling plate is aligned with the center axis of the side wall, wherein the four or more partition plates are connected to each other on the center axis of the ceiling plate, and wherein the four or more partition plates divide a space surrounded by the side wall into fan-shaped areas having an equal size in a horizontal cross-section.