Efficient atomized capturing sampler

Abstract

The invention discloses an efficient atomized capturing sampler. The efficient atomized capturing sampler is mainly composed of a liquid storage chamber, an atomized capturing chamber and a gas-mist separation chamber, wherein the liquid storage chamber is used for containing the absorption liquid, the atomized capturing chamber converts the absorption liquid into fine mist of which the grain size has the characteristics of aerosol size, and the gas-mist separation chamber prevents the fine mist from overflowing out the sampler. The fine mist has big-enough exchange contact surface area between the gas-liquid interface, so that the fine mist can be mixed uniformly with the pollutant in the air with high efficiency, the conversation efficiency of the pollutant from gas state to liquid state is improved effectively, and the pollutant in the air of the environment can be efficiently absorbed and captured. The sampler provided by the invention is made of glassy inert material, and is interference-free and pollution-free to the obtained sample, the sampling flow is wide in range and steady, the sample acquisition time is short, the sampling efficiency is high, and the variation of outside environment factors cannot influence sampling; and moreover, the sampler is low in sampling cost, convenient for extracting the samples, and convenient for field and indoor operations.

Description

technical field

[0001] The invention belongs to the technical field of air pollutant collection, and in particular relates to a high-efficiency atomization and trapping sampler. The collection objects include volatile and semi-volatile organic gases and atmospheric particles, and are mainly used to collect atmospheric aldehyde and ketone pollutant samples. Background technique

[0002] At present, the EPA TO-11A method is generally used in the world to detect the atmospheric concentration of aldehydes and ketones, but the use of silica gel tube sampling in this method has the following defects: (1) The carrier silica gel itself in the silica gel sampling tube is an important source of high molecular weight aldehydes and ketones ; ⑵ oxidants in the air (such as O 3 ) can degrade the DNPH and its derivatives in the sampling tube and affect the quantitative analysis, and the isoprene and O in the air during the sampling process 3 It can also react on the surface of the silica ...

Examples

Embodiment Construction

[0011] Such as figure 1 As shown, the high-efficiency atomization and trapping sampler of the present invention is made of tempered glass, and is in the shape of a cylinder as a whole. (wall thickness 2mm, inner diameter 2cm, height 30cm) and aerosol separation chamber 3 (wall thickness 2mm, inner diameter 1cm, height 1cm) are composed of three parts, which are respectively located in the lower, middle and upper parts of the sampler and concentric with the central axis, the liquid storage chamber 1 It is directly connected with the atomization and trapping chamber 2, and the top of the atomization and trapping chamber 2 is connected with the bottom of the aerosol separation chamber 3 by a serpentine connecting pipe 12 (inner diameter 2 mm); there is an air outlet pipe 17 at the center of the top of the aerosol separation chamber 3 (length 1cm) is connected with the external ambient air, and the connection is the air outlet 18; the inner wall of the middle part of the aerosol s...

technical field

[0001] The invention belongs to the technical field of air pollutant collection, and in particular relates to a high-efficiency atomization and trapping sampler. The collection objects include volatile and semi-volatile organic gases and atmospheric particles, and are mainly used to collect atmospheric aldehyde and ketone pollutant samples. Background technique

[0002] At present, the EPA TO-11A method is generally used in the world to detect the atmospheric concentration of aldehydes and ketones, but the use of silica gel tube sampling in this method has the following defects: (1) The carrier silica gel itself in the silica gel sampling tube is an important source of high molecular weight aldehydes and ketones ; ⑵ oxidants in the air (such as O 3 ) can degrade the DNPH and its derivatives in the sampling tube and affect the quantitative analysis, and the isoprene and O in the air during the sampling process 3 It can also react on the surface of the silica ...

Examples

Embodiment Construction

[0011] Such as figure 1 As shown, the high-efficiency atomization and trapping sampler of the present invention is made of tempered glass, and is in the shape of a cylinder as a whole. (wall thickness 2mm, inner diameter 2cm, height 30cm) and aerosol separation chamber 3 (wall thickness 2mm, inner diameter 1cm, height 1cm) are composed of three parts, which are respectively located in the lower, middle and upper parts of the sampler and concentric with the central axis, the liquid storage chamber 1 It is directly connected with the atomization and trapping chamber 2, and the top of the atomization and trapping chamber 2 is connected with the bottom of the aerosol separation chamber 3 by a serpentine connecting pipe 12 (inner diameter 2 mm); there is an air outlet pipe 17 at the center of the top of the aerosol separation chamber 3 (length 1cm) is connected with the external ambient air, and the connection is the air outlet 18; the inner wall of the middle part of the aerosol s...

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