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Atmospheric gaseous mercury sampling device

A sampling device and technology for gaseous mercury, applied in the direction of sampling device, etc., can solve the problem of inability to sample gaseous mercury, and achieve the effect of ensuring adsorption efficiency and penetration rate, high instrument precision, and good sampling effect

Active Publication Date: 2014-12-03
WUHAN TIANHONG INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly solves the problem that the gaseous mercury in the atmosphere cannot be sampled in the prior art, and proposes an atmospheric gaseous mercury sampling device

Method used

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  • Atmospheric gaseous mercury sampling device
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  • Atmospheric gaseous mercury sampling device

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Embodiment

[0024] Such as figure 1 As shown, an atmospheric gaseous mercury sampling device includes: a constant temperature box 1, a dryer 2, a filter 3, a flow controller 4, an air pump 5 connected in sequence, and an adsorption gas pipe 6 partially located in the constant temperature box 1, wherein the adsorption The suction port of the air pipe 6 is fixed outside the constant temperature box 1, and the air outlet is connected to the dryer 2 through the air nozzle 7, in which the dryer 2, the filter 3, the flow controller 4, the air pump 5, the adsorption air pipe 6, and the air nozzle 7 Both are two and connected in turn to form two parallel airflow passages.

[0025] The working process of the instrument of the present invention is as follows: first, the air enters the adsorption tube 6 heated by the constant temperature box 1, then enters the dryer 2 and filter 3 to remove moisture and particulate matter in the air, then enters the flow measurement and control part, and finally pas...

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Abstract

The invention relates to a gas sampling device, belongs to the field of environment monitoring, and in particular relates to an atmospheric gaseous mercury sampling device. The atmospheric gaseous mercury sampling device comprises a constant-temperature box, dryers, filters, flow controllers and gas pumps which are connected with one other in sequence, and adsorption gas pipes partially positioned in the constant-temperature box, wherein a gas suction opening of each adsorption gas pipe is fixed outside the constant-temperature box; a gas outlet of each adsorption gas pipe is connected with the corresponding dryer through a gas nozzle. Therefore, the atmospheric gaseous mercury sampling device has the advantages that atmospheric gaseous mercury sampling can be carried out, and the national condition requirement in China can be met; the sampling effect is good, and the constant-temperature heating box guarantees the adsorption efficiency and the penetrating rate of the adsorption pipes, and the special volume flow controllers enable the sampling flow range to be wide and the gas flow to be stable; the precision of the sampling device is high, and by virtue of a stainless steel structure, the reliability of the sampling device is also improved.

Description

technical field [0001] The invention relates to a gas sampling device, which belongs to the field of environmental monitoring, in particular to an atmospheric gaseous mercury sampling device. Background technique [0002] Due to the impact of my country's gaseous mercury emissions on the environment, my country urgently needs to understand factors such as the composition and emission concentration of gaseous mercury pollutants. The gaseous mercury sampler of the pollution source is blank for the gaseous mercury sampling equipment in the atmosphere. [0003] Since the concentration of gaseous mercury in the atmosphere is not very high, if the sampling time is not long enough, the content of mercury adsorbed by the adsorption tube will be very low, and the difficulty of detecting the concentration of gaseous mercury by analytical instruments will be greatly increased. The stability and reliability of the instrument put forward higher requirements. [0004] Therefore, the exis...

Claims

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Application Information

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IPC IPC(8): G01N1/24
Inventor 李虹杰范新峰杨凯刘晓姜帆
Owner WUHAN TIANHONG INSTR
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