Pyrethroid Detection Device With Concave Reaction Membrane
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Solution Overview
Problem
Current methods for detecting pyrethroid pesticide residues in crops using test strips are inefficient, leading to prolonged detection times and compromised accuracy due to environmental conditions, which affects the speed and reliability of on-site testing.
Innovation Solution
A device featuring a concave reaction membrane with a check-up line and quality control line, mounted blocks, slides, and pads that enhance sample flow and contact area, along with a liquid inlet and press block to prevent gaps and maintain a closed environment, improving detection efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If test strips are used for detecting pyrethroid pesticide residues in crops, then the detection can be performed on-site, but the detection time is prolonged and the efficiency is reduced
Solution Approach 1:
The test strip is divided into distinct functional segments including a sample pad, bonding pad, reaction membrane with concave structure, and water absorption pad. Each segment performs a specific function to accelerate the detection process while maintaining on-site testing capability.
Solution Approach 2:
The reaction membrane is designed with a concave structure that creates a three-dimensional reaction space, enhancing sample concentration and reaction efficiency. This dimensional change from a flat surface to a concave structure improves detection speed without compromising portability.
2Productivity
If test strips are used for detecting pyrethroid pesticide residues, then rapid testing is enabled, but the detection accuracy is affected by environmental conditions and prolonged testing time
Solution Approach 1:
The reaction membrane features a concave structure with specific local properties that concentrate the sample and enhance the antigen-antibody reaction. This localized structural optimization improves reaction efficiency and accuracy while maintaining rapid detection capabilities.
Solution Approach 2:
The device controls the physical parameters of the detection process by using the concave reaction membrane structure to optimize sample flow dynamics and reaction conditions. This parameter optimization ensures accurate results even during rapid on-site testing.
3Reliability
If a long detection process is used, then thorough testing is achieved, but the efficiency of on-site tests is seriously influenced and test results may be affected
Solution Approach 1:
The test strip design ensures continuous sample flow through the bonding pad to the reaction membrane and then to the water absorption pad. This continuous action eliminates idle time between steps, maintaining testing reliability while significantly improving efficiency.
Solution Approach 2:
The concave reaction membrane structure accelerates the antigen-antibody reaction process by concentrating samples and enhancing reaction kinetics. This allows the detection process to proceed rapidly through the critical reaction phase without compromising result reliability.
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
The device allows for quicker sample flow onto the reaction membrane, increasing detection efficiency and maintaining test accuracy by preventing environmental interference, thus enhancing the speed and reliability of pyrethroid pesticide residue detection.
Implementation Method 1
Immunochromatography assays (ICAs) as emerging immunoassays in the 1990s fulfill rapid and accurate coloration through a dry chemical test strip by means of immunological and chromatographic antigen-antibody reaction to test substances
Implementation Method 2
Immunochromatography assays (ICAs) as emerging immunoassays in the 1990s fulfill rapid and accurate coloration through a dry chemical test strip by means of immunological and chromatographic antigen-antibody reaction to test substances
Implementation Method 3
a bottom plate provided with a reaction membrane, where the reaction membrane is provided with a check-up line and a quality control line and has a concave structure
Implementation Method 4
a pressing hole provided with a press block is formed in the second mounting block
Data Source
AI summary
A method and device for detecting pyrethroid pesticide residues in crops. Reaction membrane is arranged on a bottom plate and provided with a check-up line and a quality control line; a first mounting block and a second mounting block are arranged on the bottom plate; a first slide is arranged in the first mounting block, a second slide is arranged in the second mounting block; a sample pad and a bonding pad are arranged in the first slide; a water absorption pad is arranged in the second slide; a liquid inlet provided with a pipe is formed in the first mounting block, a pressing hole provided with a press block is formed in the second mounting block; protrusions are respectively formed on the pipe and the press block; sliding grooves are formed in the liquid inlet and the pressing hole; and first springs are arranged between the protrusions and the sliding grooves.