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Method for measuring formaldehyde content by using spectrophotometer and portable spectrophotometer

A technology of spectrophotometer and formaldehyde content, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problem that formaldehyde test is not suitable, and achieve the effect of accurate and fast measurement structure, which is conducive to market promotion

Pending Publication Date: 2022-04-19
江苏诚大检测科技有限公司
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Problems solved by technology

[0005] However, this kind of test is suitable for operation in the laboratory, and it is not suitable for the formaldehyde test that needs to get results in time.

Method used

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Embodiment Construction

[0032] The invention discloses a portable spectrophotometer, comprising,

[0033] a light detection unit that converts the received light into an electrical signal and outputs it;

[0034] a circuit section including a plurality of gain amplifiers and a plurality of AD converters, amplifies the output signal from the photodetection section at a plurality of gains using the plurality of gain amplifiers, and converts the output signal using the plurality of AD converters It is a digital signal, which is output as a plurality of light quantity data;

[0035] a saturation determination section that determines whether each light quantity data from the circuit section is saturated;

[0036] a measurement result calculation section that calculates a measurement result of the received light using a part or all of the plurality of light quantity data based on a determination result of the saturation determination section, wherein the measurement result calculation section calculates a...

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Abstract

The invention discloses a method for measuring formaldehyde content by using a spectrophotometer and a portable spectrophotometer, the portable spectrophotometer comprises a storage medium, and the storage medium stores a standard curve of absorbance and formaldehyde content; light rays emitted by the stable light source penetrate through the sample chamber filled with a sample; after the sampling step, the absorbance of the solvent in the sample chamber is detected; and comparing the absorbance with the standard curve to obtain the corresponding formaldehyde content. And the formaldehyde content is directly output through the display device. Compared with the prior art, the device has the advantages of being accurate and rapid in measuring structure, portable to use and beneficial to market popularization.

Description

technical field [0001] The invention relates to the technical field of spectrophotometers, in particular to a method for measuring formaldehyde content by a spectrophotometer and a portable spectrophotometer. Background technique [0002] Functional substances such as molecular sensors that utilize photoresponses are designed to design molecular structures to absorb specific wavelengths of light to achieve targeted functions. Specifically, the molecular structure is designed so as to have an electronic state that absorbs light of a specific wavelength to transition to an excited state, and emits fluorescence of a specific wavelength to return to a ground state. The ratio of the number of photons of light emitted from a sample as a functional substance to the number of photons of light irradiated on the sample is called external quantum efficiency. In addition, the ratio of the number of photons of light emitted from a sample to the number of photons of light absorbed by the...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 潘根峰丁冉胡静潘荣王凯祥
Owner 江苏诚大检测科技有限公司
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