Electrostatic field-based air sampler and sampling method thereof

An air sampler and electrostatic field technology, which is applied in the field of environmental monitoring of air quality, can solve problems such as bottlenecks and low air condensation rate, and achieve the effect of achieving integration and good application prospects.

Active Publication Date: 2012-07-04
北京鼎蓝科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the current electrostatic field sampler has a low condensation rate to air, which creates a technical bottleneck for the detection of low-concentration microorganisms

Method used

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  • Electrostatic field-based air sampler and sampling method thereof
  • Electrostatic field-based air sampler and sampling method thereof
  • Electrostatic field-based air sampler and sampling method thereof

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Embodiment Construction

[0028] figure 1 Is the schematic diagram of the structure of the electrostatic field sampler. The sampler consists of a hemispherical electrode and an insulating base to form a hemispherical sampling space. 1- hemispherical electrode; 2- circular electrode; 3- external voltage interface; 4- sample collection tank; 5- particle charger; 6- insulating base; 7- screw nut; 8- sample delivery outlet; 9- collection Liquid input port; 10-air outlet, 11-air inlet. The optimum hemispherical diameter of the hemispherical electrode is 95mm (it can fluctuate 20-30mm up and down according to the situation), and the two symmetrical long arms and threaded holes are used to fix and seal with the insulating base. The hemispherical electrode and the insulating base are fixedly connected by M5 screw nuts, and the material of the screw nuts is copper, which is used as the lead-out electrode of the hemispherical electrode and connected to one end of the high-voltage power supply. The material of...

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Abstract

The invention discloses an electrostatic field-based air sampler and a sampling method thereof. The air sampler mainly comprises a hemispherical electrode (1), a round electrode (2) and a sampling tank (4). Microorganisms with electric charges in air in a sampling space are concentratedly deposited in a liquid medium in a relatively small area in the center of a hemisphere along the direction of an electrostatic field under the action of the electrostatic field, and an air sample is dynamically conveyed under the drive of a micro peristaltic pump simultaneously. The defects that efficiency islow, an automatic sample conveying system is not provided and the like in the prior art are overcome, and the air sample is sampled to the trace liquid medium through the electrostatic field by a novel electrostatic field sampling method, and is dynamically conveyed to a biological / chemical sensor through an inlet and outlet. The air sample is highly concentrated, and the air sampler can be integrated with the sensor and has a good application prospect in the fields of environment monitoring and the like.

Description

technical field [0001] The invention relates to an air sampler, in particular to a novel air sampling device and sampling method based on an electrostatic field, which can be mainly applied to environmental monitoring of air quality. Background technique [0002] At present, major environmental problems occur frequently in our country, and environmental pollution has seriously threatened the health of residents. In addition to chemical pollutants, there are also a large number of biological components such as bacteria, viruses, and fungi in the air. Studies have shown that these microorganisms have caused many health problems through respiratory exposure (such as the global outbreak of SARS in 2003 and H1N1 in 2009), and the monitoring of bacteria and viruses in the air is particularly important. However, as an important step in monitoring the environment, effective collection of air samples has always been a challenge. At present, the BioSampler (SKC) designed using the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N1/24G01N1/40
Inventor 要茂盛朱彤谭苗苗申芳霞
Owner 北京鼎蓝科技有限公司
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