Paper Ionization Mass Spectrometry for Naphthenic Acid Analysis
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Solution Overview
Problem
Existing methods for characterizing and quantifying naphthenic acids in produced water are laborious, time-consuming, and environmentally unfriendly due to high solvent consumption and complex sample preparation processes.
Innovation Solution
A method combining paper ionization mass spectrometry with modified cellulose paper for direct analysis and quantification of naphthenic acids, using 3-aminopropyl triethoxysilane to enhance ionization, allowing extraction and analysis in just one minute without solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If liquid-liquid extraction or solid-phase extraction is used for naphthenic acid analysis, then analytical performance is improved, but execution time increases and solvent consumption increases
Solution Approach 1:
The patent extracts only the essential function of sample preparation by using a simplified solid-phase extraction cartridge that selectively captures naphthenic acids from produced water, eliminating the need for complex liquid-liquid extraction procedures while maintaining analytical performance
Solution Approach 2:
The patent changes the extraction parameters by using a novel solid-phase extraction cartridge with optimized sorbent material and a single-step elution process, transforming the multi-step extraction procedure into a rapid one-step method that reduces execution time while preserving measurement precision
2Measurement precision
If liquid-liquid extraction or solid-phase extraction is used for naphthenic acid analysis, then analytical performance is improved, but solvent consumption increases
Solution Approach 1:
The patent removes the harmful solvent-intensive liquid-liquid extraction step and replaces it with a solid-phase extraction cartridge that uses minimal solvent for elution, thereby maintaining analytical performance while dramatically reducing solvent consumption and environmental impact
Solution Approach 2:
The patent employs disposable solid-phase extraction cartridges that eliminate the need for repeated use and cleaning of extraction equipment, reducing solvent consumption associated with equipment maintenance while providing consistent analytical performance across multiple samples
3Measurement precision
If complex sample preparation procedures are used, then analytical accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent extracts and isolates the critical sample preparation function into a pre-packaged solid-phase extraction cartridge that requires minimal user intervention, eliminating complex procedural steps while maintaining analytical accuracy through optimized cartridge design and selective sorbent material
Solution Approach 2:
The patent creates a universal solid-phase extraction cartridge that can handle various produced water samples with different matrices, providing consistent analytical accuracy across diverse sample types while simplifying the operation to a single standardized procedure that enhances ease of operation
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 fast, solvent-free, and cost-effective characterization and quantification of naphthenic acids in produced water, reducing analysis time and solvent use, while maintaining high reproducibility and sensitivity.
Implementation Method 1
extraction of the naphthenic acids
Implementation Method 2
analysis by mass spectrometry with ionization on paper (NH2—PSI-MS)
Data Source
AI summary
The present invention relates to a method for analysis, characterization and direct quantification of naphthenic acids n produced water by paper-based ionization mass spectrometry. The method is used in wastewater from the offshore and onshore petrochemical industry, enabling a fast, inexpensive and environmentally friendly analysis for the treatment and proper disposal of wastewater, minimizing problems related to corrosion in pipes and toxicity to the aquatic environment.