Portable functional color comparator

A multi-functional, colorimeter technology, applied in the field of measurement, can solve the problem that the colorimeter cannot measure chemical parameters, and achieve the effect of improving measurement accuracy

Inactive Publication Date: 2010-12-22
肖才斌 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because the sensors for measuring physical parameters are generally in direct contact with water, and so far, there is no colorimetric instrument that combines the sample cell for colorimetric analysis with the sample cell for physical measurement. Therefore, the existing colorimetric The instrument cannot measure chemical parameters and physical parameters at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Measuring nitrite concentration:

[0038] When using the azotization method to determine the concentration of nitrite, the measurement reaction time is related to the sample temperature. If the temperature of the water sample is above 25 degrees, the measurement reaction can be completed within 15 minutes. When using the multifunctional colorimetric analyzer of the present invention, the water sample is added to the sample pool, the temperature of the sample is measured and the absorbance is zeroed, and the operator adds an azo reagent to the water sample. If the sample temperature is above 25 degrees, the colorimetric The analyzer reads the absorbance value within 15 minutes, and calculates the nitrite concentration according to the absorbance value. If the sample temperature is between 18 and 25 degrees, the colorimetric analyzer will read the absorbance value within 20 minutes, and calculate the nitrite concentration according to the absorbance value. If the sample ...

Embodiment 2

[0040] Use the method of measuring multi-wavelength absorbance to increase the measurable concentration range:

[0041]When using the molybdenum blue method to measure orthophosphorus at 820 nanometers using a 22mm sample cell, the measurable concentration of orthophosphorus is within 3ppm. From the visible spectrum of molybdenum blue, the absorbance of molybdenum blue at 650nm is about half of that at 820nm. In the colorimeter of the present invention, if the absorbance at 820nm is greater than a predetermined lower limit, the colorimeter of the present invention will automatically measure the absorbance at 650nm. , using the absorbance at 650nm to calculate the concentration of orthophosphorus.

Embodiment 3

[0043] Measure the concentration of anionic polymers by measuring the multi-parameter method of absorbance at multiple wavelengths:

[0044] Cationic dyes can be used to measure the concentration of anionic polymers. This method has the following characteristics: the absorbance of the reaction product of cationic dyes and anionic polymers at a certain wavelength is a function of temperature; if the conductivity of the water sample is high, the concentration of cationic dyes and anionic polymers The spectra of the reaction products can vary greatly. When using the colorimeter of the present invention to measure the concentration of the anionic polymer, the conductance of the sample is measured first, and if the conductance value is higher than a certain preset value, the colorimetric analyzer reminds the operator that the sample needs to be diluted. If the conductivity value is within a certain preset range, the colorimetric analyzer will remind the operator to add chemical rea...

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Abstract

The invention provides a portable functional color comparator comprising a sample bath, a plurality of measuring elements, a measuring element and an electronic system with a microprocessor, wherein the sample bath is used for containing liquid to be measured; the plurality of measuring elements are used for measuring the physical parameter and the electrochemical parameter of the liquid to be measured; the measuring element is used for colorimetric analysis; and the electronic system is used for reading the information of each measuring element, carrying out parameter analysis on a plurality of parameter values and simultaneously measuring a plurality of water-quality parameters and the concentration of one substance, thereby the measuring precision is improved.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a portable multifunctional colorimeter. Background technique [0002] In the field of industrial water treatment, there are many parameters related to water quality that need to be detected, some are physical parameters, such as conductivity, temperature; some are the concentration of chemical or biological substances, such as total phosphorus, pH and calcium ion concentration. Portable battery-powered measuring instruments are widely used. These measuring instruments include instruments for measuring conductivity, pH, redox potential, and colorimetric analyzers for determining the concentration of chemical / biochemical substances. Although the use of these portable instruments greatly reduces the time and operational difficulty of water quality analysis compared with sending samples to the laboratory, it is necessary to use multiple instruments during the measurement process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/31G01N27/27
Inventor 肖才斌黄洁杨庆荣
Owner 肖才斌
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