Mobile Liquid Sampling Device for Nitrate Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting nitrate concentrations in water are cumbersome, require specialized equipment, and are not accessible to non-scientists, making it difficult for everyday users to accurately and quickly measure nitrate levels in environmental water sources.
Innovation Solution
A miniaturized liquid sampling device connected to a mobile device via a wired connection, utilizing electrochemical testing with a sensor comprising a reference, working, and counter electrode, capable of communicating test results through an audio jack or USB, allowing for easy operation and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spectroscopic methods are used for nitrate detection, then measurement precision is improved, but device complexity and ease of operation worsen due to specialized instruments and multiple reaction steps
Solution Approach 1:
The patent extracts the essential detection function from complex spectroscopic instruments by using a simplified electrochemical sensor that can be integrated with mobile devices. The sensor performs nitrate detection through electrochemical reactions rather than requiring full spectroscopic equipment, thereby maintaining measurement precision while dramatically reducing device complexity.
Solution Approach 2:
The patent introduces an intermediary mobile device (smartphone) that bridges the gap between simple field testing and complex laboratory instrumentation. The mobile device provides the necessary processing power, communication capabilities, and user interface while working with a simplified electrochemical sensor, enabling precise nitrate detection without requiring specialized spectroscopic instruments.
2Measurement precision
If chromatography methods are used for nitrate detection, then measurement precision is improved, but portability worsens due to high pressure requirements and long column dimensions
Solution Approach 1:
The patent extracts the core detection capability from bulky chromatography systems by using a compact electrochemical sensor. This eliminates the need for high-pressure liquid chromatography columns and associated equipment, enabling precise nitrate measurement in a portable field device that can be easily carried and operated in various locations.
3Measurement precision
If capillary electrophoresis methods are used for nitrate detection, then measurement precision is improved, but device complexity worsens due to long column requirements and complicated fluorescence detection setup
Solution Approach 1:
The patent extracts the essential measurement function from complex capillary electrophoresis systems by using a simplified electrochemical sensor integrated with mobile devices. This eliminates the need for long columns and complicated fluorescence detection setups, achieving precise nitrate detection with minimal equipment complexity.
4Ease of operation
If electrochemistry methods are used for nitrate detection, then ease of operation is improved, but measurement precision may worsen due to simplified detection mechanisms
Solution Approach 1:
The patent uses the mobile device as an intermediary that enhances the capabilities of simple electrochemical sensors. The mobile device provides advanced signal processing, calibration, and data analysis functions that compensate for the simplified detection mechanism, thereby maintaining high measurement precision while preserving ease of operation for end users.
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, accurate, and portable nitrate concentration measurements, allowing users to record and share data, including location and user observations, via social media platforms, with results showing good agreement with traditional methods.
Implementation Method 1
application of potential between reference and working electrodes, causes oxidation or reduction of electro-active species to occur
Data Source
AI summary
A liquid sampling device for use with a mobile device comprises a wired connection for connecting the liquid sampling device to the mobile device, a sample receiving and testing section capable of receiving a liquid sample and conducting electrochemical testing of the liquid sample and a sample testing circuit configured to communicate at least one liquid sample test result to the mobile device via the wired connection. Associated methods and a mobile device application for interfacing with the liquid sampling device are also disclosed.