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High-sensitivity spectrophotometer

A spectrophotometer and high-sensitivity technology, which is applied in the field of colorimetric systems, can solve problems such as high detection limit, low sensitivity, and low detection concentration, and achieve the effects of extending the measurement length, improving measurement sensitivity, and reducing the minimum detection concentration

Pending Publication Date: 2021-02-26
王家高
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high detection limit and low sensitivity of traditional spectrophotometers, a new colorimetric system is provided. By increasing the thickness of the measured substance, the measurement sensitivity is improved and the minimum detection concentration is reduced.

Method used

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Embodiment Construction

[0017] The preferred embodiments of the present invention are described below, and the preferred embodiments described here are only used to illustrate and explain the present invention, and do not limit the present invention.

[0018] Such as figure 1 As shown, the high-sensitivity spectrophotometer includes a colorimetric system composed of a light generator, a colorimetric tube, and a light receiver.

[0019] What this embodiment selects is optical glass tube, is the helical transparent tube 7, and the outside is plated with silver, also can select quartz tube for use, reduces interference and blank absorption, and experiment water is high-purity water, resistivity > 15M ohm*cm. Reagents are analytically pure. To improve precision and accuracy, reagents with higher purity can be used.

[0020] The colorimetric system is composed of a cuvette inlet 4, a spiral transparent tube 7 and a cuvette outlet 5 connected in sequence, and the cuvette inlet is provided with an exhaust...

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Abstract

The invention belongs to an analysis and detection instrument for trace detection, and particularly relates to a high-sensitivity spectrophotometer, which comprises a colorimetric system and a light receiver, the colorimetric system consists of a light generator and a colorimetric tube, the colorimetric tube is a spiral transparent tube, and metal capable of reflecting light is plated on the outerwall of the transparent tube. Reflected light is adopted for colorimetry, a cuvette is changed into a metal-plated glass tube, and the light passes through the bent tube and is finally gathered to measure luminosity after being reflected for multiple times. And the sensitivity can be improved by 100 times, 1000 times or even higher. And the lowest detection concentration is reduced by 10-1000 times.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection instruments, in particular to a colorimetric system of a spectrophotometer. Background technique [0002] The spectrophotometer is a micro-quantity detection instrument commonly used in laboratories. Its principle is to irradiate the measured substance with direct light, and its absorbance is proportional to the concentration of the measured substance. The measured substance can be a solution or a gas. Its sensitivity or detection limit depends on the nature of the substance, namely the maximum absorption and the thickness of the substance being measured. [0003] At present, for ultra-low and trace detection of semiconductors, integrated circuits, aerospace, environmental protection, drug residues, scientific research, etc., traditional spectrophotometers have high detection limits and low sensitivity, which is difficult to meet the requirements. For example, when the content of t...

Claims

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Application Information

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IPC IPC(8): G01N21/03G01N21/33G01N21/78
CPCG01N21/03G01N21/0303G01N21/33G01N21/78G01N2021/0382
Inventor 王家高
Owner 王家高
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