Hydrocarbon Detection Test Strip Using Photoluminescent Molecular Probe
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Solution Overview
Problem
Current methods for detecting hydrocarbon contamination in water and soil are costly, require specialized training, and are not suitable for in-field, qualitative or quantitative analysis, especially in remote or hard-to-reach locations, as they often rely on complex instrumentation and sensitive chemicals.
Innovation Solution
A portable test strip with an environmentally sensitive molecular probe, such as 4-nitrostilbene, that changes photoluminescence in response to hydrocarbon presence, allowing for rapid, inexpensive analysis using a smartphone or tablet, without the need for extensive training or sample extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional laboratory methods (gravimetric analysis, gas chromatography, UV-fluorescence) are used to detect hydrocarbon contamination, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the detection function from complex laboratory instruments and implements it using a simple molecular probe system. The molecular probe (e.g., 4-nitrostilbene) is designed to specifically interact with hydrocarbons and produce a detectable signal, eliminating the need for sophisticated chromatography or spectrometry equipment while maintaining detection capability.
Solution Approach 2:
The patent creates a simplified model of hydrocarbon detection by using molecular probes that mimic the detection principles of complex instruments. Instead of using actual gas chromatography or UV-fluorescence equipment, the probe system replicates the essential detection function through selective molecular interactions and optical signal changes that can be read by simple devices.
2Measurement precision
If traditional laboratory methods are used for hydrocarbon detection, then measurement precision is improved, but ease of operation deteriorates due to requiring highly trained personnel
Solution Approach 1:
The molecular probe system is designed to be self-indicating, where the probe itself provides the detection signal through its optical properties. The probe changes its photophysical characteristics (absorption, fluorescence, or color) upon binding to hydrocarbons, allowing anyone to perform detection by simply observing the signal change without requiring interpretation of complex instrument data or specialized training.
Solution Approach 2:
The patent replaces complex mechanical and electronic measurement systems with a simple optical detection system. Instead of using gas chromatography columns, detectors, and data processing systems, the invention uses molecular probes that produce optical signals detectable by the human eye or simple photodetectors, eliminating the need for trained operators to interpret complex instrument readings.
3Measurement precision
If traditional laboratory methods are used for hydrocarbon detection, then measurement precision is improved, but loss of time increases due to time-consuming analysis procedures
Solution Approach 1:
The molecular probe is pre-designed and pre-positioned to immediately interact with hydrocarbons upon contact with the sample. The probe system requires no sample preparation, extraction, or concentration steps - detection occurs as soon as the probe encounters the hydrocarbon-containing sample, providing rapid results compared to traditional methods that require multiple sequential processing steps.
Solution Approach 2:
The patent eliminates intermediate processing steps entirely. Instead of following the traditional sequence of sample collection, extraction, concentration, and analysis, the molecular probe system allows direct detection by skipping all preparatory steps. The probe interacts directly with the hydrocarbon molecules in the sample matrix, providing rapid detection without time-consuming intermediate procedures.
4Measurement precision
If traditional laboratory methods are used for hydrocarbon detection, then measurement precision is improved, but cost increases due to expensive instrumentation and chemicals
Solution Approach 1:
The molecular probe system uses inexpensive, easily synthesized organic dyes or small molecules as detection agents. These probes can be produced at low cost through simple chemical synthesis and do not require expensive instrumentation. The probes are designed to be stable enough for single-use field detection but do not need to be recovered or reused, making them economically viable for widespread deployment.
Solution Approach 2:
The patent changes the detection parameters from requiring expensive instrumentation to relying on simple optical properties that can be measured with low-cost devices. By selecting molecular probes with appropriate absorption or fluorescence wavelengths that can be detected by simple spectrophotometers, colorimeters, or even smartphone cameras, the system dramatically reduces equipment costs while maintaining detection precision through careful molecular design.
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
Enables rapid, portable, and cost-effective detection of hydrocarbon contamination in water and soil, providing both qualitative and quantitative results, suitable for in-field use by untrained personnel, with improved sensitivity to viscosity and polarity changes caused by hydrocarbons.
Implementation Method 1
contacting a sample with a molecular probe, the molecular probe having a photoluminescence which is environmentally sensitive; collecting the photoluminescence from the molecular probe; and determining whether the photoluminescence is indicative of a hydrocarbon contaminated sample
Data Source
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AI summary
A method for the detection of hydrocarbon contamination in a sample is disclosed. The method includes contacting a sample with a molecular probe. The molecular probe has a photoluminescence which is environmentally sensitive. The photoluminescence from the molecular probe is collected. The method includes determining whether the photoluminescence is indicative of a hydrocarbon contaminated sample. A test strip for the detection of hydrocarbon contamination in a sample is also disclosed. The test strip includes a molecular probe embedded in a substrate and/or immobilized to the substrate, the molecular probe having a photoluminescence which is environmentally sensitive to hydrocarbon contaminated sample.