Fluorinated Acid Electrochemical Sensor for Metal Detection
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Solution Overview
Problem
Current methods for detecting and quantifying metal ions, particularly iron, in biological liquids like blood and serum are complex, costly, and lack specificity, making them unsuitable for point-of-care and resource-limited settings, and existing electrochemical sensors are not widely available or optimized for use in complex matrices like blood.
Innovation Solution
A method using fluorinated acid substances, such as trifluoroacetic acid, in conjunction with electroanalytical sensors to detect and quantify metal elements, particularly iron, by generating a current signal proportional to the metal ion concentration, which can be applied to both laboratory and non-laboratory settings, utilizing electrochemical techniques like square wave voltammetry and incorporating materials like Nafion and gold nanoparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If colorimetric methods with Ferene reagents are used to detect metal ions, then detection capability is achieved, but the method becomes complex, costly, and requires specialized equipment
Solution Approach 1:
The invention extracts the essential detection function from complex colorimetric methods by using electrochemical sensors that directly measure metal ions without requiring Ferene reagents or ionophore substances. This simplifies the methodology while maintaining detection capability.
Solution Approach 2:
The invention replaces the chemical-based colorimetric detection system with an electrochemical sensing system. This substitution eliminates the need for complex reagent systems and provides a more direct, simplified measurement approach using electroanalytical techniques.
2Ease of operation
If conventional electrochemical sensors are used for metal detection, then simpler operation is achieved, but sensitivity and reliability in complex biological matrices are insufficient
Solution Approach 1:
The invention applies local quality by modifying the sensor surface with specific materials (Nafion, gold nanoparticles) at the electrode interface. This localized modification enhances sensitivity and reliability for detecting metal ions in complex biological matrices without complicating the overall operation.
Solution Approach 2:
The invention uses composite materials comprising Nafion and gold nanoparticles on the electrode surface. This composite structure provides both the electrochemical activity needed for detection and the selectivity required for reliable measurement in complex biological samples like blood and serum.
3Measurement precision
If atomic absorption or colorimetric methods are used for iron determination, then accurate measurement is achieved, but cost and time requirements increase
Solution Approach 1:
The invention employs preliminary action by using electrochemical sensors that provide rapid measurement without requiring the multiple steps and extended processing times of atomic absorption or colorimetric methods. The electrochemical detection occurs directly and quickly, eliminating time-consuming preparation and measurement phases.
4Measurement precision
If specialized equipment and trained personnel are used for metal ion detection, then measurement accuracy is improved, but adaptability to non-laboratory settings decreases
Solution Approach 1:
The invention employs disposable or easily replaceable electrochemical sensors that do not require specialized equipment or extensive training to use. These sensors can be deployed in non-laboratory settings and provide accurate measurements without the need for complex instrumentation or highly trained personnel.
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 provides a cost-effective, rapid, and specific means of detecting metal ions, including iron, in biological liquids, with improved sensitivity and adaptability to various environments, reducing the need for specialized equipment and training, and enabling accurate measurements in both laboratory and point-of-care settings.
Implementation Method 1
contacting the biological liquid with at least a fluorinated acid substance
Implementation Method 2
detecting by means of an electroanalytical sensor a current signal proportional to the quantity of metal element
Data Source
AI summary
The present invention concerns a method for detecting and/or quantifying a metal element in a biological liquid, in particular selected from the group consisting of blood, plasma and serum, comprising the steps of: contacting the biological liquid with at least one fluorinated acid substance; applying the biological liquid and the fluorinated acid substance to an electroanalytical sensor; and detecting by means of the electroanalytical sensor a current signal proportional to the amount of metal element in the biological liquid.