Multi-Chromatograph Analyzer Scheduling for Mass Spectrometer Throughput
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Solution Overview
Problem
Conventional chromatograph mass spectrometers face inefficiencies due to overlapping data collection times and varying analysis times for different samples, leading to reduced throughput and extended operating times when analyzing multiple cycles with different analysis conditions.
Innovation Solution
A multi-chromatograph analyzer system with a control unit that coordinates the operation of multiple chromatographs, sample dispensing mechanisms, and channel switching valves to ensure non-overlapping data collection times and optimize sample introduction timing, using a channel switching valve to direct separated samples to a detector, thereby improving overall operation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple chromatographs are connected to a single mass spectrometer to improve throughput, then the operating rate of the mass spectrometer improves, but the analysis time extends and throughput per analysis item deteriorates due to overlapping data collection
Solution Approach 1:
The control unit pre-calculates and determines the optimal start timing for each chromatograph's analysis cycle before actual operation begins. This preliminary scheduling ensures that data collection periods are staggered and do not overlap, allowing multiple chromatographs to operate efficiently without causing time conflicts in the shared mass spectrometer detector.
2Manufacturing precision
If analysis conditions are optimized for each analyte to achieve excellent separation performance, then separation quality improves, but analysis time varies and scheduling becomes complex
Solution Approach 1:
The system allows analysis conditions such as mobile phase flow rate, gradient profile, and column temperature to be independently adjusted for each chromatograph and analyte type. The control unit manages these parameter variations while automatically calculating start timings that accommodate different analysis durations, thus maintaining high separation performance without overwhelming scheduling complexity.
3Measurement precision
If data collection timing is staggered to prevent overlap, then measurement accuracy improves, but the operating time extends and overall throughput decreases
Solution Approach 1:
The control unit dynamically adjusts the start timing of each chromatograph's analysis cycle based on the specific analyte, chromatograph configuration, and current system state. This dynamic scheduling optimizes the staggered data collection timing to prevent overlap while minimizing total analysis time, thus maintaining measurement precision without sacrificing throughput.
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 system enhances the overall operation efficiency by synchronizing data collection across multiple chromatographs, reducing idle time and improving throughput even when analyzing items with different analysis times or sample separation times, while maintaining separation performance.
Implementation Method 1
the sample injected into the analysis channel from the sample injection part installed downstream of the liquid delivery device is separated into each component in the separation column filled with the stationary phase
Data Source
AI summary
The analysis apparatus includes a standby section which is provided between a dispensing operation of an analysis item B′ prior to an analysis item C and the sample analysis channel introduction. The sample analysis channel introduction is arranged prior to a data collection section of an analysis item A. The operation is started earlier but after a sample dispensing operation section of the analysis item A. A sample dispensing operation section of the analysis item C can be started earlier and the analysis time of the analysis item C can be moved to immediately after a sample analysis operation section of the analysis item B′. The analysis item A in a second cycle can be started earlier by the early start time of the analysis item C in a first cycle. A total processing time Tc can be shorter than a total processing time Tb.