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Aviva Levina
School of Chemistry, the University of Sydney
Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology Medicine & Pharmacology

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Journal : The Journal of Pure and Applied Chemistry Research

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Mass Spectrometry Analysis of Chromium-Binding Low-Molecular-Weight Serum Fractions Anna Safitri; Aviva Levina; Peter A Lay
The Journal of Pure and Applied Chemistry Research Vol 6, No 2 (2017): Edition of May-August 2017
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1388.019 KB) | DOI: 10.21776/ub.jpacr.2017.006.02.326

Abstract

The current work is focused on the characterization of the chromium(III)-containing low-molecular-weight (LMW) fractions of blood serum by mass spectrometry. The LMW fractions of serum binding-Cr(III) were collected by organic solvent precipitation using acetonitrile. The chromium(III) compounds used were [Cr(pic)3], where pic = 2-pyridinecarboxylato(-) or A, and the Cr(III) propionate complex, [Cr3O(OCOEt)6(OH2)3])+ or B. The new signals appeared in the mass spectra in the presence of added Cr(III) compounds, either A or B. This indicated that common LMW Cr containing serum fractions were formed on addition of Cr(III) to serum. The new signals contained three distinct peaks with a shift of 16, corresponding to ions of m/z +1083, +1099, and +1115 Da, which consisted of 4 Cr atoms with bridging ligands.
Co-Authors Peter A Lay Safitri, Anna