Quick airborne dust sampling method

[0025] Example

[0026] The method for rapid sampling of atmospheric dust reduction according to the present invention involves devices including a dust collecting cylinder, a fixed basket, a pipe clamp, a support rod, a fixed pile, a prefabricated base, a fixed ring, a pull wire, a pull wire fixture, a handle, It is composed of loading and unloading rod, hook, sample collection bag, fixed ring or rope and glass beads. Dig a hole on the ground of the observation point, put the prefabricated base 6 vertically into the pit, and fill the soil firmly. The prefabricated base 6 is an integral cement prefabricated block or top surface The open box body, the bottom is made of metal, the four walls are prefabricated cement boards or wooden boards, and the fixed pile 5 is welded to the metal bottom surface. The box body can be filled with excavated soil or stones on the prefabricated base 6. Three cable fixtures 10 are tied to the surrounding ground, and the horizontal angle between the fixtures 10 is 120°; one end of the cable 9 is fixed on the fixing ring 8 welded on the upper part of the support rod 4, and the other end is fixed on the fixture 10. (10) Metal anchors or sandbags or stone weights; the top of the support rod 4 is connected to the pipe clamp 3 welded at the bottom of the fixed basket 2 through threads, the dust collecting tank 1 is put into the fixed basket 2, and then the plastic samples are collected Put the bag 15 in the dust collection tank 1, and put the glass beads 17 in the sample collection bag 15 so that the bottom of the sample collection bag 15 is in contact with the bottom of the dust collection tank 1, and then the 15 mouth of the sample collection bag is folded and sleeved in the dust collection tank. 1 The upper edge is fixed with a fixing ring or a rope 16; the support rod 4 is erected, and the support rod 4 is moved so that the lower end of the support rod 4 is aligned with the hole of the fixing pile 5 sleeved on the prefabricated base 6, and the fixing bolt 7 is inserted to fix, start Observation

[0027] When sampling, hold the loading and unloading rod 13, which is a plurality of short rods connected together. The material is wood rod, steel pipe or aluminum alloy tube. The hook 14 welded on the upper end of the loading and unloading rod 13 is picked up and fixed on the dust collecting cylinder 1. Handle 12, move the dust collection tank 1 out of the fixed basket 2, slowly put the dust collection tank 1 upright on the ground, remove the fixing ring or strapping rope 16, lift out the sample collection bag 15, seal it, write a mark, and put it in For the sample collection bag 15, use the hook 14 on the loading and unloading rod 13 to pick up the handle 12 on the dust collecting tank 1, and then put the dust collecting tank into the fixed basket 2 to start a new observation.

[0028] The method of the present invention simplifies the structure of the mounting bracket of the dust collecting tank, and ensures the firmness; the dust collecting tank is more convenient to load and unload, without manual climbing, and the operation risk is reduced; sampling is more convenient and fast, and the dust collecting tank does not need Replacement can be used continuously, reducing the workload of on-site sampling. This method has a wide range of applications, and can be used in both humid and arid areas, and is especially suitable for large-scale multi-point observation areas in the wild.