System and method for determining concentration of substance in solution

Abstract

A system and method for detecting concentration of one or more substances in a solution in conjunction with an optical sensor and an electromagnetic sensor are described. A substance concentration detector for cooperative optical and electromagnetic sensors according to an embodiment operates, an optical sensor and an electromagnetic sensor are synergistically used to detect the concentration of asubstance having a physical characteristic that is incompatible with one or another sensor, and / or the measurement of the substance is affected by another substance in the sample. For example, embodiments are configured to cooperatively use optical and electromagnetic sensors to detect concentrations of metal ions and acids in a solution, such as for real-time substance concentration detection.

Description

[0001] 【Technical field】 [0002] The present invention relates to detecting the concentration of one or more substances in a solution, and particularly relates to the synergistic use of an optical sensor and an electromagnetic sensor to obtain the concentration of a substance in a solution. [0003] 【Background technique】 [0004] Often it is desirable to know the concentration of one or more substances in a solution, and many times it is even very important. For example, detecting the concentration of various substances in water is important to maintain water quality, such as water used in various equipment, fresh water supplies, etc. Likewise, detection of the concentration of substances in solutions used in industrial processes is desirable, eg, to ensure proper operation of the process, process efficiency, quality of the resulting product, and the like. [0005] An example of an industrial process for monitoring species in solution is the anodic oxidation process. Anodiz...

AI Technical Summary

Problems solved by technology

However, these techniques do not use optical absorption and electromagnetic induction to determine the concentrations of acids (such as sulfuric acid) and metal ions (such as aluminum ions) in solution for online monitoring of species concentrations in solutions (for example, real-time monitoring of sulfuric acid in anodizing solutions and aluminum ion concentration)

For example, JP2002235194A uses conductivity, specific gravity, sound velocity and viscosity to determine the concentration of substances, because it depends on the physical properties of the medium, which requires an independent test cell for measurement, which is a relatively complicated and expensive system

US20160161402A1 uses near-infrared transmission spectroscopy to identify solid or liquid substances on a sample placed in a sample holder, thus only providing optical absorption, and cannot detect aluminum ion concentration

CN10613302 uses the voltage-current experiment to control the sulfuric acid concentration in the anodic oxidation system, wherein the voltage-current experiment cannot detect aluminum ion and sulfuric acid concentration at the same time

KR1020180057955 uses optical, electrical and ultrasonic detection technology, in which the contact type electrode of the electrical detection system is not suitable for high concentration of acid, and the optical sensor only uses a pair of prisms to obtain optical data, so it is not suitable for distinguishing complex composition solutions

EP0885986 uses a light emitting and receiving device to measure hypochlorous acid concentration, thus only provides optical absorption and cannot detect aluminum ion concentration

US7351349 uses near-infrared radiation to detect changes in optical properties of chemical components, so it only provides optical absorption and cannot detect aluminum ion concentration

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