Agilent InfinityLab LC/MSD Series - ACHIEVE HIGH MASS ACCURACY ECONOMICALLY

Significance of the Topic

Accurate mass measurement underpins reliable elemental composition determination and unknown compound identification across pharmaceutical, chemical, food safety and consumer product laboratories. High mass accuracy enhances confidence in molecular formula assignments and streamlines analytical workflows while reducing the need for costly high-end instrumentation.

Objectives and Study Overview

This application note evaluates the combination of Agilent InfinityLab LC/MSD Series mass spectrometers with MassWorks software from Cerno Bioscience to achieve high mass accuracy and spectral fidelity. Key aims include demonstrating a simple calibration workflow using the Agilent tune solution, quantifying improvements in mass and spectral accuracy, and verifying calibration stability over extended operation periods.

Methodology and Instrumentation

Raw scan or profile-mode data are acquired on an Agilent InfinityLab LC/MSD system using the standard Agilent tune solution. These data feed into MassWorks software, which applies a patented peak shape calibration and m/z assignment algorithm. Predefined calibration templates streamline the process and ensure reproducible results. Data processing occurs post-acquisition within the OpenLAB CDS ChemStation environment.

Instrumentation Used

• Agilent InfinityLab LC/MSD Series mass spectrometer
• Agilent tune solution for calibration data acquisition
• MassWorks calibration software (Cerno Bioscience)
• OpenLAB CDS ChemStation Edition

Main Results and Discussion

• Mass accuracy improved by up to 100× compared to uncalibrated data, reducing mass errors from several ppm to sub-ppm levels
• Spectral accuracy reached up to 99% permitting high-confidence isotope pattern matching and formula generation
• Calibration stability demonstrated consistent performance over more than 24 hours of continuous operation
• Clear visual separation between calibrated and uncalibrated peaks validated the effectiveness of the MassWorks algorithm

This combination effectively transforms nominal mass measurements into high-accuracy data suitable for confident compound identification.

Benefits and Practical Applications

• Affordable approach to high mass accuracy without major hardware upgrades
• User-friendly calibration process integrates seamlessly with existing LC/MSD systems
• Applicable across diverse fields including pharmaceutical research, environmental analysis, food safety and QA/QC laboratories

Future Trends and Applications

Looking ahead, integration of real-time calibration routines directly within analytical workflows will further enhance throughput. Expansion of this approach into high-resolution metabolomics and proteomics is anticipated, along with cloud-based calibration services and advanced machine-learning algorithms for spectral deconvolution and compound identification.

Conclusion

The Agilent InfinityLab LC/MSD coupled with MassWorks software delivers a robust, cost-effective solution for achieving high mass accuracy and spectral precision. This enables reliable elemental composition determination and unknown formula identification, empowering laboratories to enhance data quality without significant capital investment.

References

1. Agilent Technologies. Agilent InfinityLab LC/MSD Series: Achieve High Mass Accuracy Economically with MassWorks Software. Application Note 5991-8085EN, 2017.
2. Cerno Bioscience. MassWorks Software Calibration Technology. Technical Note, 2017.