LC-MS Analysis of Broad Hydrophobicity Analytes
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Solution Overview
Problem
Current LC-MS methods require complex setup changes and are inefficient for analyzing multiple analytes with varying hydrophobicities, leading to delayed and costly diagnostics, as they necessitate frequent changes in chromatography columns and mobile phases, making them unsuitable for routine use in hospitals and clinical labs.
Innovation Solution
The method employs a single set of liquid chromatography columns and mobile phase buffers, along with adjustable LC-MS system parameters, to analyze a wide range of analytes with different hydrophobicities without hardware changes, enabling rapid and efficient analysis of multiple samples in any order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequent changes in chromatography columns and mobile phases are made to analyze different analytes, then analysis coverage is improved, but device complexity and operation time increase
Solution Approach 1:
The patent implements a universal LC-MS system configuration that can analyze analytes with log P values from -1.2 to 6.0 using a single column and mobile phase setup. The system achieves this by optimizing the mass spectrometer parameters (ionization mode, collision energy, temperature) to handle diverse analyte classes including hydrocarbons, alcohols, ketones, aldehydes, carboxylic acids, esters, amines, and amides without requiring hardware changes.
Solution Approach 2:
The invention changes operational parameters of the mass spectrometer rather than hardware configuration to adapt to different analytes. By adjusting ionization voltage, collision energy, and temperature parameters, the system can selectively detect and quantify various analyte classes while maintaining the same chromatography column and mobile phase composition.
2Productivity
If batch processing is used to reduce system changes, then productivity is improved, but time to result increases
Solution Approach 1:
The patent enables continuous analysis by eliminating the need to batch samples based on analyte type. The universal system configuration allows immediate analysis of any sample containing analytes within the log P range of -1.2 to 6.0, maintaining system readiness and avoiding batch waiting times while preserving high throughput capability.
3Measurement precision
If expert technologist intervention is required for system adjustments, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system is designed to automatically adapt to different analytes through pre-programmed parameter sets corresponding to different analyte classes. The automated parameter selection and optimization capabilities allow non-expert users to achieve accurate results without requiring manual system adjustments or specialized knowledge of mass spectrometry optimization.
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 approach significantly reduces analysis time, increases ease of use, and maintains diagnostic quality for a broad range of analytes, making LC-MS more accessible and efficient for clinical diagnostics by eliminating the need for frequent hardware adjustments.
Implementation Method 1
purification of analytes from a broad range of chemical classes by liquid chromatography
Implementation Method 2
a mass spectrometer capable of ionizing, fragmenting, and detecting one or more parent ions or product ions
Implementation Method 3
capable of ionizing, fragmenting, and detecting one or more parent ions or product ions specific to each analyte
Data Source
AI summary
Systems, apparatuses, kits, and methods for purification and analysis of analytes having a broad range of hydrophobicities by liquid chromatography-mass spectrometry (LC-MS). Using one set of liquid chromatography columns, one set of mobile phase buffers, and, optionally, a single ionization method (e.g., electrospray ionization), a wide range of analytes can be purified and analyzed on a liquid chromatography-mass spectrometry (LC-MS) system. LC-MS purification and analysis of analytes having a broad range of partition coefficients is accomplished by selecting LC run parameters and MS system parameters that are particular to different classes of analytes without having to make column or buffer changes or any other hardware configuration changes to the LC-MS system. The methods, systems, and kits described herein provide for substantially increased speed/throughput and ease of use for a wide range analytes with essentially no compromise in specificity for individual analytes relative to previously described methods.