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Liquid flow alkalization method and alkalization device

A liquid flow and liquid technology, applied in the field of chemical analysis, can solve the problems of reducing the accuracy of analysis results, difficult to achieve trace analysis, unsatisfactory alkalization effect, etc., to avoid human harm and environmental pollution, and good alkalization effect , the effect of simple structure

Inactive Publication Date: 2007-05-30
JIANGSU JIANGFEN ELECTROANALYTICAL INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method of alkalization solution is to directly add strong alkali liquid, which can also meet the requirements of conventional chemical analysis. In micro analysis, the traditional direct addition method will cause secondary pollution, interfere with the measured substance, and reduce the analysis results. Accuracy; in modern industrial and environmental monitoring and analysis, more and more detection items are micro and trace analysis, so it is particularly important to prevent secondary interference in the detection process
At present, there is also an alkalization method, which uses a 1000 mm long silicone rubber tube and soaks it in an alkalizing agent. The alkalizing agent enters the tube through the silicone rubber tube and mixes with the alkalized liquid flowing in the tube to achieve the alkalinization of the liquid. Purpose, this method, the flow path of the solution is longer, the alkalization effect is not ideal, and it is difficult to meet the requirements of trace analysis

Method used

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  • Liquid flow alkalization method and alkalization device

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Embodiment Construction

[0010] The present invention is further described in conjunction with the accompanying drawings and examples.

[0011] The bottle mouth of the alkalization bottle 2 filled with strong alkali liquid diisopropylamine 1 is connected with the base 3 in the alkalization pool by thread sealing, and the joint of the base 3 and the upper cover 6 is provided with a porous membrane support in the inner cavity. The microporous polytetrafluoroethylene film 5 on the body 4, the pore diameter of the film 5 is 60 μm, the size is basically the same, densely and evenly distributed, the film and the support are rectangular, 90 mm long and 13 mm wide, and the support is equipped with seals around the upper and lower sides. lock up. There is a cavity 9 with a height of 1.2 mm above the film 5 , and a cavity 10 communicating with the alkalization bottle is located below the support 4 .

[0012] When working, the liquid flows in from the inlet 7 on the upper cover and flows out from the outlet 8. ...

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Abstract

A liquid flow basification method and basification device are disclosed which belong to the technique field of chemical analysis. The volatile gas of strong base solution of the diisopropylamine dichloroacetate which penetrates the microporous polytetrafluoroethylene film is mixed with the flowing liquid to realize the auto basification of the liquid, and changes the flow speed to control the PH value. Said device contains: basification bottle and basification pool, the microporous polytetrafluoroethylene is mounted flatwise between the base plate and upper cover, the bore diameter is 20-100 mum, the imports and exports of liquid, flow cavity, basification bottle and the base plate are connected hermetically with the upper cover. The invention is used for the basification of liquid in the chemical analysis, flow circuit short, save time, save agent, avoid the cross contamination and improve the precision of analysis; and the device is simple in structure, easy to disassemble, convenient to maintain and clean, and good utilization effect.

Description

technical field [0001] The invention relates to a liquid flow alkalization method and a device for realizing the method, belonging to the technical field of chemical analysis. Background technique [0002] In conventional chemical analysis, it is necessary to control the pH of the solution, and it is often necessary to alkalize the solution. The traditional method of alkalization solution is to directly add strong alkali liquid, which can also meet the requirements of conventional chemical analysis. In micro analysis, the traditional direct addition method will cause secondary pollution, interfere with the measured substance, and reduce the analysis results. Accuracy; In modern industrial and environmental monitoring and analysis, more and more detection items are micro and trace analysis, so it is particularly important to prevent secondary interference in the detection process. At present, there is also an alkalization method, which uses a 1000 mm long silicone rubber tub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/08G01N31/00
Inventor 朱培德陈勇
Owner JIANGSU JIANGFEN ELECTROANALYTICAL INSTR
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