Current ratio color pool

A technology of flow ratio and colorimetric cell, applied in the direction of instruments, analytical materials, measuring devices, etc., can solve problems such as easy generation of air bubbles, easy adhesion of microorganisms, and hidden dangers of corrosion, and achieve the effect of performance improvement

Inactive Publication Date: 2006-03-15
张爱荔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The core (substrate) material of the colorimetric cell was initially made of ceramics and cermets, but the sintering process was adopted for the ceramic molding, and the sintered pores, gaps, or residual protrusions of the profile remained on the surface of the inner cavity of the colorimetric cell. Generate air bubbles, reduce the repeatability and stability of instrument test results
Later, metal cores were introduced. At present, aluminum alloy and stainless steel metal cores are widely used. Aluminum alloy has a good processing type, but the corrosion resistance of aluminum alloy is poor, and the surface needs to be anodized before it can be used. ;Although stainless steel does not require anodizing treatment, it is easy to bind microorganisms, its corrosion resistance is not as good as that of ceramics, and it is difficult to process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The Al element is selected as the alloy, and the weight content is 0.6%; the Nb element is 2.0%; and the Mo element is 0.4%. The titanium alloy flow colorimetric cell is mechanically processed, and then heat-treated at 20°C above the β phase transition point for 20 minutes, and water-cooled for heat treatment. The prepared titanium alloy flow colorimetric cell has a smooth surface and meets the requirements of use, but its corrosion resistance is poor. Difference. The biochemical analyzer using the colorimetric cell, cross-contamination: ≤0.6%, repeatability: <0.008Abs; CV<0.4%; stability: <0.006Abs / H.

Embodiment 2

[0036] The alloy selects Al element with a weight content of 0.2%; Nb element is 1.0%; Mo element is 1.2%. Then heat it at 30°C above the β phase transition point for 25 minutes, heat treatment with water cooling, and machine the titanium alloy flow colorimetric cell. poor. The biochemical analyzer using the colorimetric cell, cross-contamination: ≤0.5%, repeatability: <0.005Abs; CV<0.3%; stability: <0.008Abs / H.

Embodiment 3

[0038] The Al element is selected as the alloy, and the weight content is 4.0%; the Nb element is 2.0%; then heat treatment is carried out at 25° C. above the β transformation point for 20 minutes, and water cooling. The titanium alloy flow colorimetric cell is mechanically processed, and the surface finish is relatively poor. Therefore, electrolytic polishing is required. The electrolytic polishing uses perchloric acid, glacial acetic acid, nitric acid, and hydrofluoric acid as the polishing solution in a ratio of 50:100:30:5. The reaction voltage is 30V, stainless steel is used as the cathode, the whole experiment is heated in a water bath, the temperature is controlled between 30°C and 40°C, and the polishing time is 1 to 3 minutes. The biochemical analyzer using the colorimetric cell, cross-contamination: ≤0.6%, repeatability: <0.007Abs; CV<0.4%; stability: <0.006Abs / H.

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Abstract

A flowing colorimetric pool applies titanium alloy as base body as titanium alloy contains 0.3 ¿C 7.0 wt % of AI and 0.3 ¿C 0.4 % one or two of Nb and Mo.

Description

Technical field: [0001] The invention relates to an instrument for spectral analysis, and in particular provides a flow colorimetric cell made of titanium alloy material for containing reference liquid and sample liquid. Background technique: [0002] The flow colorimetric cell (also known as: absorption cell, sample cell) is used to hold reference liquid and sample liquid, and then analyze the substance on the spectroscopic analysis instrument. It has a wide range of applications and can be used in chemical, medical, environmental protection, power plants, water plants, petroleum and other industries. For the light-transmitting part of the flow cuvette, according to the different light sources, quartz glass or optical glass has been selected for many years, and the material of the cuvette core (substrate) is constantly changing with the improvement of the instrument's precision and environmental requirements. The core (substrate) material of the colorimetric cell was initi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/03C22C14/00C25F3/16
Inventor 张爱荔
Owner 张爱荔
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