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Device and method for on-line preparation of aldehyde ketone compound adsorption tube

A compound and adsorption tube technology is applied in the field of devices for on-line preparation of adsorption tubes for aldehydes and ketones, which can solve the problems of unstable adsorption and derivatization efficiency of aldehydes and ketones, high cost of consumables, and great influence of human factors, and achieve automatic regeneration of consumables. , The effect of low preparation environment requirements, eliminating the need for transportation and storage

Pending Publication Date: 2022-02-25
HANGZHOU PUYU TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. It is greatly affected by human factors, and the storage and transportation requirements of samples are high;
[0004] 2. The high cost of consumables is not conducive to the realization of long-term high-frequency observations, and cannot meet the current requirements for fine control of photochemical pollution;
[0005] 3. During the manual sampling process, the DNPH-silica gel adsorption tube is greatly affected by the ambient temperature, and the adsorption and derivatization efficiency of aldehydes and ketones on the adsorption tube is unstable, resulting in large measurement and analysis errors;

Method used

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  • Device and method for on-line preparation of aldehyde ketone compound adsorption tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 A schematic structural diagram of the device for the online preparation of aldehyde and ketone compound adsorption tubes according to the embodiment of the present invention is given, as figure 1 As shown, the device for preparing the aldehyde and ketone compound adsorption tube on-line includes:

[0034] a first container 71 containing a coating liquid;

[0035] A delivery unit, such as a delivery pump 45, which is connected to the first container 71 and used to send the coating liquid in the first container 71 to the first column 81;

[0036] The first column 81 and the second column 82, the DNPH powder is filled in the first column 81, and the purified substance is filled in the second column 82;

[0037] The silica gel column 20 and the second container 73, the second container 73, the silica gel column 20, the second column 82, the first column 81 and the delivery unit are connected in sequence;

[0038] A cleaning unit, the cleaning unit is used to rem...

Embodiment 2

[0065] Application example of the device and method for on-line preparation of adsorption tubes for aldehydes and ketones according to Example 1 of the present invention in air monitoring.

[0066] In this application example, if figure 1 As shown, the delivery unit adopts a delivery pump 45, such as a syringe pump; the first container 71 and the third container 73 communicate with the first switching module 64, and the first switching module 64 is sequentially connected to the delivery pump 45, the second switching module 61, the first column 81, the fourth switching module 62, the second column 82, the silica gel column 20, the third switching module 65 and the second container 73, the second switching module 61 is connected to the third switching module 65, and the fourth switching module 62 is connected to the second container 73 Fill the DNPH powder in the first post 81, the second post 82 fills organic silica gel, such as Phenyl silica gel, and fill the pure silica gel i...

Embodiment 3

[0075] According to the application example of the device and method for on-line preparation of aldehyde and ketone compound adsorption tubes in embodiment 1 of the present invention in air monitoring, the difference from embodiment 2 is:

[0076] Such as figure 2 As shown, a base, a carrier and a drive module, the carrier 41 is arranged on the base and rotates driven by the drive module;

[0077] The carrier 41 adopts a disk, and through holes are uniformly arranged on the circumference of the disk; the first silica gel column 21, the second silica gel column 22 and the third silica gel column 23 are respectively arranged in the through holes, and the corresponding centers of the adjacent silica gel columns The angle is 120 degrees; the upper and lower ends of the silica gel column are open; the drive module uses a motor to drive the bearing 41 to rotate;

[0078] In the control device, the first moving part and the second moving part are respectively disc-shaped and arrang...

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Abstract

The invention provides a device and a method for on-line preparation of an aldehyde ketone compound adsorption tube. The device for on-line preparation of the aldehyde ketone compound adsorption tube comprises a first container; a conveying unit is connected with the first container and is used for conveying a coating liquid in the first container to a first column; the first column is filled with DNPH powder, and a second column is filled with purified substances; a second container, a silica gel column, the second column, the first column and the conveying unit are connected in sequence; and a removing unit is used for removing the solvent in the silica gel column. The device has the advantages of automation, online preparation and the like.

Description

technical field [0001] The invention relates to gas monitoring, in particular to a device and method for online preparation of aldehyde and ketone compound adsorption tubes. Background technique [0002] At present, the sampling and analysis methods and related standards of aldehydes and ketones are mainly based on off-line sampling methods. For example, in the national standard HJ683-2014, it is stipulated that after off-line sampling is carried out using DNPH-silica gel adsorption tubes, the samples are transferred to the laboratory for high-performance liquid chromatography. Perform analytical testing. This offline working method has many disadvantages, such as: [0003] 1. It is greatly affected by human factors, and the storage and transportation requirements of samples are high; [0004] 2. The high cost of consumables is not conducive to the realization of long-term high-frequency observations, and cannot meet the current requirements for fine control of photochemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04
CPCB01D53/04
Inventor 刘立鹏汪维昊刘盈智胡琼璞黄俊兴邓海仲朱信旭
Owner HANGZHOU PUYU TECH DEV CO LTD
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