Secondary ion mass spectrometry of proteins

Santanu Ray, Alexander G. Shard

    Research output: Contribution to journalArticlepeer-review


    The adsorption of bovine serum albumin (BSA), immunoglobulin G (IgG) and fibrinogen (Fgn) on fluorinated selfassembled monolayers have been studied using time of flight secondary ion mass spectrometry (ToF-SIMS) and Spectroscopic Ellipsometry (SE). The objective of the work has to establish the utility of ToF-SIMS for the determination of the amount of protein adsorbed on the surface. Quantification of surface adsorbed proteins was carried out using SE and a good correlation between ToF-SIMS results and SE was achieved. The surface distribution of proteins were also analysed using Atomic Force Microscopy (AFM). We show that the surface distribution of proteins strongly affect the ToFSIMS results.

    Original languageEnglish
    Pages (from-to)550-554
    Number of pages5
    JournalWorld Academy of Science, Engineering and Technology
    Publication statusPublished - 1 Apr 2011


    • Atomic Force Microscopy
    • Protein
    • Spectroscopic Ellipsometry
    • ToF-SIMS


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