Qualitative and quantitative characterization of the arsenic-binding behaviour of sulfur-containing peptides and proteins by the coupling of reversed phase liquid chromatography to electrospray ionization mass spectrometry

2012 ◽  
Vol 47 (8) ◽  
pp. 949-961 ◽  
Author(s):  
Anne-Christine Schmidt ◽  
Kathleen Mickein
Keyword(s):  
Mass Spectrometry ◽  
Reversed Phase ◽  
Ionization Mass ◽  
Reversed Phase Liquid Chromatography ◽  
Quantitative Characterization ◽  
Qualitative And Quantitative ◽  
Phase Liquid ◽  
Sulfur Containing ◽  
Binding Behaviour

scholarly journals Multi-Technique Characterization of Pictorial Organic Binders on XV Century Polychrome Sculptures by Combining Micro- and Non-Invasive Sampling Approaches

2021 ◽  
Vol 11 (17) ◽  
pp. 8017
Author(s):  
Elena C. L. Rigante ◽  
Cosima D. Calvano ◽  
Rosaria A. Picca ◽  
Simona Armenise ◽  
Tommaso R. I. Cataldi ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Reversed Phase ◽  
Ionization Mass ◽  
Reversed Phase Liquid Chromatography ◽  
Non Invasive ◽  
Lipid Mixtures ◽  
Egg White Proteins ◽  
Phase Liquid

A stony sculptural composition of the Nativity Scene is preserved in Altamura’s Cathedral (Apulia, Italy). This commonly called Apulian “presepe”, attributed to an unknown stonemason, is composed of polychrome carbonate white stone sculptures. While earlier stratigraphic tests have unveiled a complex superimposition of painting layers—meaning that several editions of the sculptures succeeded from the 16th to 20th century—a chemical investigation intended to identify the organic binding media used in painting layers was undertaken. Drawing on current literature, two strategies were exploited: a non-invasive in situ digestion analysis and an approach based on micro-removal of painting film followed by the Bligh and Dyer extraction protocol. Both peptide and lipid mixtures were analyzed by matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) and reversed-phase liquid chromatography coupled to mass spectrometry by electrospray ionization (RPLC-ESI-MS). Attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) examinations were also performed on micro-samples of painting films before lipids and proteins extraction. While human keratins were found to be common contaminants of the artwork’s surfaces, traces of animal collagen, siccative oils, and egg white proteins were evidenced in different sampling zones of the sculptures, thus suggesting the use of non-homogeneous painting techniques in the colored layers.

Coupling of capillary-channeled polymer (C-CP) fibers for reversed phase liquid chromatography and ESI-MS for the determination of proteins in a urine matrix

2016 ◽  
Vol 8 (48) ◽  
pp. 8410-8419 ◽  
Author(s):  
Lei Wang ◽  
Marissa A. Pierson ◽  
R. Kenneth Marcus
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Reversed Phase ◽  
Ionization Mass ◽  
Reversed Phase Liquid Chromatography ◽  
Esi Ms ◽  
Detection Mode ◽  
Phase Liquid ◽  
Urine Matrix

Electrospray ionization mass spectrometry (ESI-MS) analysis provides a great deal of analytical information as a detection mode when coupled with liquid chromatography (LC) and capillary electrophoresis (CE) separations of proteins.

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