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Liquid analysis device and method based on online dilution

A liquid analysis device and liquid analysis technology, which are applied in the preparation of test samples, etc., can solve the problems of inability to provide and high reagents, and achieve the effect of solving the dilution problem, realizing automation and rapid transmission.

Pending Publication Date: 2020-11-10
HANGZHOU PUYU TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the semiconductor wafer production, non-ferrous metal industry smelting, and pharmaceutical production factories have large production areas and different process nodes are far apart. These factories usually cannot provide a large amount of liquid for testing, and some reagents are relatively expensive. (semiconductor industry), from the perspective of environmental friendliness, it is not allowed to discharge too much harmful solution

Method used

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  • Liquid analysis device and method based on online dilution

Examples

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Effect test

Embodiment 1

[0031] The liquid analysis device based on online dilution according to the embodiment of the present invention, the liquid analysis device based on online dilution includes:

[0032] The first valve and the first liquid storage unit, the first valve, such as a multi-way valve, has multiple ports; when the first valve is switched to sample injection, the liquid to be tested passes through the first pump under the suction of the first pump, such as a syringe pump. One valve, the first liquid storage unit; when the first valve is switched to dilution, the second pump pushes the carrier liquid and the liquid to be tested in the first liquid storage unit, and the third pump pushes the diluent through the first valve and enters the second liquid in turn. a delivery pipeline, a second valve and a second liquid storage unit;

[0033] a second pump and a third pump, the second pump and the third pump are used to draw liquid and push the liquid to move;

[0034] The second valve and t...

Embodiment 2

[0051] An application example of the online dilution-based liquid analysis device and method according to Embodiment 1 of the present invention.

[0052]In this application example, the first pump, the second pump and the third pump all use syringe pumps. By switching, the first pump selectively communicates with the first valve and the waste liquid pool, and the second pump selectively communicates with the first valve and the load tank. liquid, the third pump selectively connects the first valve and diluent;

[0053] The first valve adopts a two-position seven-way valve, and the multiple ports are: the first port selectively communicates with the second port and the sixth port, the third port selectively communicates with the second port and the fourth port, and the fifth port selectively communicates with the second port and the sixth port. The common port is selectively connected to the second port and the third port; the first port is connected to the liquid to be tested,...

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Abstract

The invention provides a liquid analysis device and method based on online dilution. The liquid analysis device based on online dilution comprises a first valve, wherein the first valve is provided with a plurality of ports, and when the first valve is switched to sample injection, the liquid to be measured passes through the first valve and the first liquid storage unit under the suction of the first pump, when the first valve is switched to be diluted, the second pump pushes the carrier liquid and the to-be-detected liquid in the first liquid storage unit, and the third pump pushes the diluent to sequentially enter the first conveying pipeline, the second valve and the second liquid storage unit through the first valve; a second valve which is provided with a plurality of ports, whereinwhen the second valve is switched to be diluted, the second liquid storage unit receives the liquid, and when the second valve is switched to convey, the gas enters the second valve, the second liquidstorage unit, the second conveying pipeline, the third valve and the third liquid storage unit, the gas pipeline is communicated with the second valve, and the second conveying pipeline is arranged between the second valve and the third valve; the third valve which is provided with a plurality of ports, wherein when the third valve is switched to convey, the third liquid storage unit receives theliquid; a liquid sensor which is located downstream of the third liquid storage unit. The device has the advantages of accurate dilution and the like.

Description

technical field [0001] The invention relates to liquid detection, in particular to a liquid analysis device and method based on online dilution. Background technique [0002] In various production processes, such as semiconductor wafer production, non-ferrous metal industry smelting, pharmaceutical production process, environmental monitoring and other industries, the analysis of trace elements in materials is involved. At present, these factories mainly rely on artificial sampling, dilution, and then uploading Analytical instruments for analysis, the required sample is basically a few milliliters. [0003] There are also online real-time analysis devices in the field of environmental monitoring, but the usual practice is to use a pump to transfer water to a sample pool close to the analytical instrument. This method uses a large amount of liquid, and the analytical instrument draws a few milliliters through the capillary for analysis. In addition, too far a distance direct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/38
CPCG01N1/38
Inventor 卢水淼夏晓峰杨凯王强俞晓峰胡建坤丁海波
Owner HANGZHOU PUYU TECH DEV CO LTD
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