Static electric field and gravity centrifugation enhancing wet wall cyclonic high-flow-rate air sampler

Abstract

The invention provides a static electric field and gravity centrifugation enhancing wet wall cyclonic high-flow-rate air sampler, which comprises a collection pipeline, a humidification pipeline, a fan, a high-voltage direct current power supply, a liquid collection groove, a cyclone pipe and a liquid supplementing bottle, wherein the upper part of the collection pipeline is a cylinder; a tubularelectrode and a cylindrical electrode which are connected with the high-voltage direct current power supply are respectively arranged on the outer side pipe wall and the center; the top of the collection pipeline is connected with the fan; the lower part is a reversely installed round table tube; the bottom is provided with a gas-liquid separation plate and is connected with a liquid collection groove; air enters the sampler from one end of the humidification pipeline and is then introduced into the upper part of the collection pipeline; the liquid collection groove is connected with the cyclone pipe; the bottom of the cyclone pipe is provided with a sample opening; the top of the cyclone pipe is provided with an overflow opening; a liquid supplementing bottle lead-out pipeline is connected with the overflow opening of the cyclone pipe and the humidification pipeline through a tee joint; collection liquid flowing out from the liquid supplementing bottle or the overflow opening is conveyed to the humidification pipeline. A wet wall cyclonic sampling method is used; the static electric field sampling is combined; the cyclone enrichment is added; the high-flow-rate efficient collection on biological particles is realized; the sampler can be widely applied to the environment biological aerosol sampling.

Description

technical field [0001] The invention relates to an air sampler, especially a new wet wall cyclone aerosol sampler and sampling method enhanced by electrostatic field and gravity centrifugal, which can realize high concentration and enrichment of particles in the air, and can be widely used indoors The collection and detection of particulate matter in the air of the external environment, especially the rapid collection and detection of bioaerosols. Background technique [0002] In recent years, my country's air pollution has intensified, seriously endangering the health of residents. There are both chemical pollutants and a large number of biological aerosols in the air, such as bacteria, viruses, fungal particles, etc. Studies have shown that many health problems are related to exposure to air pollutants, especially bioaerosols, such as respiratory infections and allergies. The generation, diffusion, and transmission of bioaerosols are more likely to lead to the outbreak o...

AI Technical Summary

Problems solved by technology

The Anderson sampler collects air samples on solid medium with a flow rate of 28.3L / min. It is an international standard bioaerosol collection method, but its high impact speed will cause impact damage to microorganisms and cause loss of cultivability; Biosampler The sampler is used to collect air samples in a liquid medium with a flow rate of 12.5L / min. The sampling flow rate is too low to be developed for rapid detection of ambient air; the Bertin Coriolis sampler collects air samples into a liquid medium with a flow rate of 100-300L / min, but its secondary aerosolization problem is serious, causing a large amount of sample loss and resulting in a large deviation in sample quantification

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