SAP Deodorant Evaluation Using Ammonia Adsorption and Desorption
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Solution Overview
Problem
Current methods for evaluating deodorant performance, such as the detection tube method and gas chromatography, face challenges in quantification precision and require additional facilities, especially when analyzing ammonia, which is difficult when moisture is present in the sample.
Innovation Solution
An apparatus comprising a vaporization module, an adsorption/desorption module with a superabsorbent polymer (SAP) deodorant member, and a collection module, which vaporizes ammonia, adsorbs and desorbs it using a carrier gas, and collects the desorbed ammonia gas for quantitative analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gas chromatography or mass spectrometry is used to quantify deodorant performance, then measurement precision is improved, but device complexity and additional facilities are increased
Solution Approach 1:
The patent extracts only the essential function of ammonia detection from complex analytical instruments. By using a simple impinger to collect ammonia gas and titrate with hydrochloric acid, it removes the need for gas chromatography columns, mass spectrometers, and other complex facilities while maintaining quantification capability through direct chemical reaction and volume measurement.
Solution Approach 2:
The patent employs simple, inexpensive, and easily replaceable components such as impingers, titration flasks, and standard reagent solutions. These disposable-like elements replace expensive, complex, and maintenance-intensive analytical instruments, achieving cost-effective ammonia quantification without requiring sophisticated equipment.
2Measurement precision
If gas chromatography or mass spectrometry is used to analyze ammonia, then measurement precision is improved, but device complexity and safety requirements are increased due to ammonia being classified as toxic
Solution Approach 1:
The patent converts the harmful property of ammonia (toxicity requiring special handling) into a beneficial feature by exploiting its high solubility in water and reactive nature. The ammonia gas is directly absorbed into the impinger solution and quantified through titration, transforming a safety hazard into a straightforward chemical measurement that eliminates the need for toxic substance protocols.
Solution Approach 2:
The patent introduces water-based solutions (impinger liquid, hydrochloric acid, sodium hydroxide) as intermediary substances that safely mediate the measurement process. These intermediaries capture and neutralize ammonia through chemical reactions, allowing quantification without direct handling or analysis of toxic ammonia gas by the operator.
3Measurement precision
If gas chromatography or mass spectrometry is used to detect ammonia, then measurement precision is improved, but the analysis becomes impossible when moisture is present in the sample
Solution Approach 1:
The patent changes the measurement parameter from direct gas phase analysis (sensitive to moisture interference) to solution-phase chemical reaction. By dissolving ammonia in the impinger liquid and performing titration in aqueous solution, the method becomes insensitive to moisture in the original sample, as the titration reaction proceeds accurately in the presence of water.
4Device complexity
If detection tube method is used to evaluate deodorant performance, then device complexity is reduced, but measurement precision and quantification accuracy deteriorate
Solution Approach 1:
The patent replaces the mechanical/optical detection tube system (which relies on discoloration intensity) with a chemical titration system. Instead of visually estimating color changes, the method uses stoichiometric chemical reactions between ammonia and hydrochloric acid, where the endpoint is detected by pH indicator, providing objective and precise quantification while maintaining apparatus simplicity.
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
This method allows for the accurate and simple quantification of deodorant performance without additional facilities, enabling the measurement of ammonia adsorbed into a deodorant member containing SAP, effectively overcoming previous precision and facility requirements issues.
Implementation Method 1
a vaporization module for vaporizing an ammonia water
Implementation Method 2
an adsorption/desorption module connected to the vaporization module and adsorbing and desorbing the vaporized ammonia on a surface of the deodorant member
Implementation Method 3
desorbing the ammonia from the deodorant member by injecting a carrier gas into the deodorant member having the ammonia gas adsorbed therein
Implementation Method 4
raising a temperature from 100° C. to 700° C. at a rate of 1 to 10° C./min
Implementation Method 5
collecting the desorbed ammonia gas through an impinger
Data Source
AI summary
The present invention relates to a device and a method for evaluating performance of a deodorant using a superabsorbent polymer (SAP), and the device and method are capable of quantitatively evaluating deodorant performance by collecting ammonia adsorbed to deodorant materials including the SAP and measuring the amount of ammonia thereof.