alexa Effect of impurities on the matrix-assisted laser desorption ionization mass spectra of insulin.

Author(s): Bajuk A, Guch K, Michalak L

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Abstract The effect of impurity (sodium sulfate Na2SO4; copper sulfate CuSO4; potassium ferrocyanide K4Fe(CN)6; and triammonium citrate (NH4)3C6H5O7) concentration on the positive matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) spectra of insulin is described. 2,5-Dihydroxybenzoic acid was used as a desorption matrix. The estimated maximum concentrations of tested salts for which no insulin signal was observed were determined. Copyright 2001 John Wiley & Sons, Ltd. This article was published in Rapid Commun Mass Spectrom and referenced in

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