Matrix Effects in LC-MS/MS
Systematic Method Development and Troubleshooting
October 15, 2022
Method Development,
Sensitivity,
Assessment of Matrix Effects,
Trifluoroacetic Acid,
TFA,
Buffer,
Ion Pairs
Tips: Frequently, resolving the problem requires a combination of individual experimental solutions and systematic and logical investigation.
Part 1 highlights rational method development and validation and includes troubleshooting tips for sound sample preparation, for analyte stability in biological matrices, and for chromatographic conditions and injection solvents.
Part 2 further discusses development strategies for LC/MS/MS analysis of biopharmaceutical products including proteins and peptides. It will present troubleshooting tips for carryover, recovery and matrix effects, and selectivity; and for automation where possible to improve the overall reliability and efficiency of LC/MS/MS.
...Correct Matrix Effects in Food Testing
November 3, 2022
Important Considerations Regarding Matrix Effects When Developing Reliable Analytical Residue Methods Using Mass Spectrometry
June 30, 2017
Kai Zhang, Jon W. Wong, Hudan Safarpour, Alexander J. Krynitsky
LCGC North America-07-01-2017, Volume 35, Issue 7
Pages: 444–451
Practical examples of how to correct for matrix effects in food testing to obtain reliable quantitative data using LC–MS and GC–MS.
Liquid chromatography–mass spectrometry (LC–MS) using electrospray ionization (ESI) is subject to matrix effects when analyzing complex matrices, such as food samples, for trace organic residues and contaminants. Even though a sample extract has gone through extensive cleanup, there are still enough coeluted compounds to possibly cause signal suppression or signal enhancement when analyzing a complex matrix, thus adversely affecting quantitation. Likewise, gas chromatography–mass spectrometry (GC–MS) is also subject to matrix effects that can hinder accurate MS quantification. This installment of “Focus on Food Analysis” shows some practical examples of how to correct for matrix effects to obtain reliable quantitative data using LC–MS and GC–MS.
...Strategies for Detecting and Eliminating Matrix Effects
March 17, 2022
Strategies for the Detection and Elimination of Matrix Effects in Quantitative LC–MS Analysis
January 13, 2014
Swee K. Tan, P. Nicholas Shaw, Amitha K. Hewavitharana
LCGC North America, LCGC North America-01-01-2014, Volume 32, Issue 1
Pages: 54–64
We assessed a simple method based on recovery for the detection of matrix effects and two alternative methods for the rectification of matrix effects in LC–MS: standard addition and the coeluting internal standard method.
Currently available methods for the detection of matrix effects in liquid chromatography–mass spectrometry (LC–MS) are tedious and complex; therefore, a simpler method is required. Although there are no methods to completely eliminate matrix effects, the most well-recognized technique available to correct for matrix effects is that of internal standardization using stable isotope–labeled versions of the analytes. As this method can prove expensive, an alternative method of correction is likely to be useful. In this study, a simple method based on recovery is assessed for the detection of matrix effects. Two alternative methods for the rectification of matrix effects in LC–MS are also assessed: standard addition and the coeluting internal standard method.
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