Sample preparation for liquid chromatography-tandem mass spectrometry using functionalized ferromagnetic...

Area of Science:

• Analytical Chemistry
• Biochemistry
• Materials Science

Background:

• Sample preparation is crucial for accurate quantification of small molecules.
• Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is a powerful analytical technique.
• Developing efficient extraction methods for complex biological matrices is essential.

Purpose of the Study:

• To evaluate the use of functionalized ferromagnetic micro-particles for sample preparation.
• To assess the efficiency of C18-modified ferromagnetic micro-particles in extracting small molecules.
• To determine the applicability of this method for quantitative LC-MS/MS analysis.

Main Methods:

• Utilized C18-modified ferromagnetic micro-particles for analyte extraction.
• Employed a representative analyte, itraconazole, from plasma samples.
• Investigated the extraction efficiency using small quantities of micro-particles.

Main Results:

• Approximately 100% recovery rate was achieved with 125 microg of micro-particles from 10 microL of plasma.
• Excellent linearity (r>0.99) and reproducibility (inter-assay CV< or =7%) were demonstrated.
• The method proved effective for extracting the target analyte from a complex biological matrix.

Conclusions:

• C18-functionalized ferromagnetic micro-particles are effective for small molecule extraction.
• This technique enhances sample preparation for quantitative LC-MS/MS.
• The method is suitable for analyzing small molecules in complex biological samples.