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Quantitative analysis method of solution chromogenic reaction and detector thereof

A color reaction and detection device technology, applied in the field of analysis and detection, can solve problems such as harsh maintenance conditions, cumbersome operation, and inability to obtain data

Active Publication Date: 2015-05-27
上海绿帝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, my country's existing testing institutions and professionals, testing methods and testing methods are still unable to obtain the required data in an accident in a timely, accurate and complete manner, thus delaying the effective handling of the disaster
Furthermore, in remote mountainous areas, rural areas, plateaus, islands, etc., due to the limitation of analysis and detection conditions, it is impossible to obtain the required detection data in a timely and accurate manner.
Although there are a variety of portable spectrophotometers on the market, including PF-12 (Germany), PHOTOFLEX (USA), UKBS-AquaGem (UK), CMC1 (USA), etc., they all use traditional measurement principles and structures. , such as single-beam filters controlled by microprocessors, the operation is cumbersome and must be used by professional technicians, the equipment is expensive, and the maintenance conditions are harsh

Method used

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  • Quantitative analysis method of solution chromogenic reaction and detector thereof
  • Quantitative analysis method of solution chromogenic reaction and detector thereof
  • Quantitative analysis method of solution chromogenic reaction and detector thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] please see Figure 5 Schematic diagram of the color space, the present invention utilizes the color sensor technology to detect the three primary colors of the remaining chromogenic agent and the product mixture after the chromogenic agent and the measured solution undergo a color reaction, according to the color space concept proposed by the International Association of Illumination (CIE Technical Report: COLORI METRY, CIE 15,3 rd Ed., 2004, 17-19, ISBN 3901906339) into lightness, chroma and hue values. As we all know, when detecting the concentration of the analyte X by means of the chromogenic reaction "R (chromogenic agent) + X (analyte) → XR (product)", R must be added in excess to ensure that X is completely reacted to generate XR, and highly sensitive The developer is often inherently darker in color, so the product solution exhibits a mixed color of the remaining developer R' and the product XR. Figure 5 Among them, A, E, and D respectively represent the mea...

Embodiment 2

[0064] please see figure 1 .

[0065]The device of the present invention comprises a host computer and a lower computer, consisting of a lower computer housing 1, a sample pool 2, a cover plate 3, a lower computer communication interface 4, a lower computer circuit board 5, a sensor interface 6, a lower computer program download interface 7, a sensor Data line 8, LED light source interface 9, LED light source power line 10, color sensor 11, sensor bracket 12, sample tank 13, LED light source 14, light-transmitting plate 15, communication data line 16, upper computer shell 17, upper computer circuit 18 , touch LCD screen 19, host computer program download interface 20, power switch 21, charging socket 22, lithium battery pack 23, host computer communication interface 24, voltage stabilizing circuit 25, sensor interface circuit 26, TTL and RS232 conversion circuit 27, single-chip microcomputer 28. Light source control circuit 29, DD311 chip 30, and light source regulator 31 are...

Embodiment 3

[0071] According to the operating method of the detection device designed and installed in embodiment 2

[0072] First, download the lower computer working program to the single-chip microcomputer 28 of the lower computer circuit 5 in the device designed and installed in embodiment 2 through the lower computer program download interface 7, and download the upper computer working program to the upper computer through the upper computer program download interface 20 18 in memory. Get about 3ml of the tested solution (colored solution added with chromogenic agent) in the sample pool 2, place the sample pool 2 in the sample tank 10, turn on the power switch 15, the touch liquid crystal screen 19 and the LED light source 14 are automatically turned on, and when the touch Select the measurement item (measured substance in the solution) on the touch screen 19, and the white light emitted by the LED light source 14 irradiates the solution in the sample pool 2, and the transmitted ligh...

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Abstract

The invention relates to a quantitative analysis method of solution chromogenic reaction and a detector thereof. According to the invention, by utilizing the photopermeability characteristics of a solution generated by reaction between chromogenic substances and a chromogenic agent, and utilizing a calculation module designed according to color space concept, the three primary colors including red, green and blue which are shown by transmission light are converted into measurement points shown by performance numbers including lightness, green-red and blue-yellow, the hue and target color difference of the solution are calculated, a standard curve of hue, target color difference and concentration of chromogenic substances is fitted by a polynomial expression, and the concentration of a practical sample is calculated by an interpolation method. According to the principle, the designed detector consists of an upper computer and a lower computer which are connected by a communication data line (16), and comprises a lower computer circuit (5), a sample cell (2), an LED light source (14), an upper computer circuit (18), a color collecting system, a data acquisition and processing system, an operation system and working procedures. The detector is simple in structure, is convenient and rapid to operate, is accurate in result, and can be widely applied to the quantitative detection of the solution chromogenic reaction.

Description

technical field [0001] The invention relates to a method for quantitative analysis of solution color reaction and its detection device, in particular to a method for quantitative analysis of solution substance concentration through color reaction and electronic color analysis technology, and a quantitative analysis method designed by this method The detection device belongs to the technical field of analysis and detection. Background technique [0002] The color analysis method has a long history of application in the analysis of chemical substances. It analyzes the optical characteristics of the measured substance or the substance content (concentration) in the solution by detecting the reflection or transmission signal of the measured substance to light. Common measurement devices include colorimeters and spectrophotometers. [0003] The color difference meter is a kind of color deviation testing instrument, which is to make a filter that simulates the spectral characteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/78
Inventor 郜子蕙郜子涵刘升郜洪文
Owner 上海绿帝环保科技有限公司
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