Multi-Wavelength Absorbance Reagent Verification
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Solution Overview
Problem
In absorptiometry, the measurement of dissolved substance concentration is often hindered by insufficient reagent quantity due to pump breakdowns, channel blockages, or reagent depletion, leading to incorrect or undetected concentrations, especially when using red, green, and blue region component lights.
Innovation Solution
Selecting a region component light with a linear relation between absorbance and concentration, and using coloring agents that transmit specific lights without absorption, allowing for accurate concentration measurement and reagent quantity judgment through absorbance values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If absorptiometry is used to measure dissolved substance concentration, then concentration measurement capability is provided, but measurement accuracy deteriorates when reagent quantity is insufficient due to pump breakdowns, channel blockages, or reagent depletion
Solution Approach 1:
The invention uses colorimetric reagents that change color based on dissolved substance concentration, measuring absorbance at multiple wavelengths (red, green, blue regions). By monitoring color intensity changes across different spectral regions, the system can accurately determine concentration even when reagent quantity varies, as the relative color ratios remain consistent regardless of absolute reagent amount
Solution Approach 2:
The system measures absorbance values at multiple wavelengths and uses these measurements to calculate dissolved substance concentration. The multi-wavelength approach provides feedback information that allows the system to compensate for reagent quantity variations, ensuring accurate measurements regardless of whether the reagent pump delivered the expected volume
2Productivity
If reagent pump automation is implemented, then productivity is improved, but device complexity increases and reliability deteriorates due to potential pump breakdowns, channel blockages, and supply tube deviations
Solution Approach 1:
The system automatically measures absorbance at multiple wavelengths and calculates concentration without requiring manual intervention to detect or correct reagent quantity issues. The automated multi-wavelength measurement process self-corrects for reagent volume variations, eliminating the need for additional sensors or complex feedback control mechanisms that would increase device complexity
Solution Approach 2:
The invention changes the measurement parameters from single-wavelength to multi-wavelength absorbance measurement. By measuring absorbance across red, green, and blue spectral regions and analyzing the relationships between these parameters, the system can determine concentration accurately regardless of reagent quantity, thereby maintaining productivity while improving reliability without adding mechanical complexity
3Device complexity
If single-wavelength absorbance measurement is used, then device complexity is reduced, but measurement precision deteriorates when reagent quantity is insufficient
Solution Approach 1:
The light receiving device measures absorbance across multiple wavelength regions (red, green, blue) simultaneously, making the measurement system multi-functional. This universal approach allows the same measurement process to accurately determine concentration regardless of reagent quantity, eliminating the need for separate verification measurements or additional hardware
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures proper concentration measurement of dissolved substances regardless of reagent quantity, with the method allowing for reagent addition verification and warning systems to prevent measurement errors.
Implementation Method 1
a light having a specific wavelength emitted from a light emitting device is transmitted to the solution to be measured, and one portion of the light is absorbed in the solution to be measured, and then, the transmitted light is received by a light receiving device
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A method for measuring concentration of a dissolved substance is provided, which can judge whether or not a quantity of a reagent added to a sample is proper when the concentration of a dissolved substance in the sample is measured. A reagent including a coloring agent is made by adding a coloring agent to the reagent, and the coloring agent allows a measured solution to develop a color transmitting a region component light for a dissolved-substance concentration measurement selected from any of three region component lights of red, green, and blue obtained by transmitting a light including a visible light region to the measured solution colored by addition of the reagent to the sample, and dividing a light of the visible light region of a transmitted light thereof into roughly three portions. Next, based on the transmitted light from the measured solution to which the reagent including a coloring agent is added, an absorbance of the region component light for the dissolved-substance concentration measurement, and an absorbance A3 of another region component light resulted only from the coloring agent are calculated. Whether or not the reagent in a necessary quantity is added to the sample can be judged by comparing the absorbance A3 and a standard absorbance A0.