Micro-zone airtight device for simulating dry deposition of atmospheric dust

A dry deposition and dust technology, applied in the direction of analyzing materials, instruments, etc., can solve problems such as human health threats, and achieve the effect of simple structure

Active Publication Date: 2017-05-24
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Dietary intake of vegetables contaminated with heavy metals may pose serious long-term threat to human health

Method used

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  • Micro-zone airtight device for simulating dry deposition of atmospheric dust
  • Micro-zone airtight device for simulating dry deposition of atmospheric dust
  • Micro-zone airtight device for simulating dry deposition of atmospheric dust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the vegetable greenhouse, the dry dust deposition simulation of a certain block of vegetables was carried out.

[0028] Firstly, lift the device by moving the handle 6 and move it to the land that needs dust reduction, cover the device on the vegetables that need dust reduction, and make the device in airtight contact with the ground, then cover the movable baffle 1, plug in the disturbance layer activities Partition7. Put the prepared sediment into the injection hole 3, blow it in with a strong blower, close the sealing baffle 2 of the injection hole, and at the same time quickly turn on the power, turn on the fan 4 to disturb the sedimentation in the upper half of the layer fully disturbed. Turn off the fan 4, quickly pull out the two movable baffles 7 of the disturbance layer, and put down the movable baffle 5 of the disturbance layer, so that the sediment will naturally fall to the vegetable leaves and soil through the action of gravity. After the sediment is fu...

Embodiment 2

[0030] In the experimental field, the soil dry deposition simulation of a certain block was carried out.

[0031] First, lift the device by moving the handle 6 and move it to the land that needs dust reduction, cover the device on the land that needs dust reduction, and make the device in airtight contact with the ground, then cover the movable baffle 1, and insert the disturbance layer Movable partition 7. Put the prepared sediment into the injection hole 3, blow it in with a strong blower, close the sealing baffle 2 of the injection hole, and at the same time quickly turn on the power, turn on the fan 4 to disturb the sedimentation in the upper half of the layer fully disturbed. Turn off the fan 4, quickly pull out the two movable partitions 7 of the disturbance layer, put down the movable partition 5 of the disturbance layer, and let the sediment naturally fall to the soil by gravity, and remove the device after the sediment is fully settled.

[0032] By simulating the de...

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Abstract

The present invention discloses a micro-area closing apparatus for simulating atmospheric dust dry deposition. According to the present invention, the apparatus is a five-sided rectangular box structure, wherein the middle portion is provided with a disturbance layer movable separation plate so as to divide into an upper space and a lower space, the top portion is provided with a movable baffle, both side surfaces of the upper space are respectively provided with a fan and a disturbance layer movable baffle, the front surface of the upper space is provided with a sample inlet hole, the sample inlet hole is provided with a sealing baffle, and the front surface and the back surface of the upper space are provided with moving handles; and with the apparatus of the present invention, the closed environment can be created, and the dust can be subjected to sufficient disturbance so as to make the dust be distributed in the whole disturbance space and make the heavy metal-containing dust can uniformly fall on the surface of vegetable leaves in a soil or the soil surface layer through the gravity effect, such that the technical support is provided for understanding of the heavy metal bioavailability in the atmospheric dry deposition-soil-vegetable system and the change characteristics thereof.

Description

technical field [0001] The invention relates to the technical field of urban environmental engineering, in particular to a device capable of realizing the micro-area simulation process of indoor atmospheric dry deposition, which provides technical support for in-depth understanding of heavy metal bioavailability and change characteristics in the atmospheric dry deposition-soil-vegetable system. Background technique [0002] Currently, atmospheric deposition has been identified as one of the main sources of heavy metals in crops and vegetables near urban industrial areas. Atmosphericly driven toxic metals can persistently contaminate cropland soil-vegetable ecosystems, even located far from the source of emissions. Dietary intake of vegetables contaminated with heavy metals may pose a serious long-term threat to human health. In recent years, the atmospheric deposition of trace metals has been on the rise all over the world. Therefore, it is necessary to conduct a more in-d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/04
Inventor 毕春娟陈振楼贾晋璞刘超刘峰
Owner EAST CHINA NORMAL UNIV
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