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1,822 Newest Publications in rapid communications in mass spectrometry

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Evaluating climate signal recorded in tree‐ring δ13C and δ18O values from bulk wood and α‐cellulose for six species across four sites in the northeastern US

08-Nov-2017 | Rossella Guerrieri, Katie Jennings, Soumaya Belmecheri, Heidi Asbjornsen, Scott Ollinger, Rapid Communications in Mass Spectrometry, 2017

Abstract Rationale We evaluated the applicability of tree ring δ13C and δ18O values in bulk wood – instead of the more time and lab‐consuming α‐cellulose δ13C and δ18O values, for assessing climate and physiological signals across multiple sites and for six tree species along a latitudinal ...

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Oxygen isotope analysis of levoglucosan, a tracer of wood burning, in experimental and ambient aerosol samples

07-Nov-2017 | J. Blees, M. Saurer, R.T.W. Siegwolf, V. Ulevicius, A.S.H. Prevôt, J. Dommen, M.M. Lehmann; Jan Blees, Matthias Saur ..., Rapid Communications in Mass Spectrometry, 2017

Abstract Rationale Levoglucosan is formed from cellulose during biomass burning. It is therefore often used as a specific tracer to quantify the contribution of wood burning to the aerosol loading. The stable oxygen isotope composition (δ18O value) of biomass is determined by the water cycle ...

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A closer look into the nitrogen blank in elemental analyser/isotope ratio mass spectrometry measurements

02-Nov-2017 | Reinhard Langel, Jens Dyckmans, Rapid Communications in Mass Spectrometry, 2017

Abstract RATIONALE One important limitation for the precise measurement of minute amounts of N in solid samples by elemental analyser/isotope ratio mass spectrometry (EA/IRMS) is the accurate determination of the analyser blank value. This study was performed to identify different sources, ...

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Mimicking of cyproconazole behavior in the presence of Cu and Zn

02-Nov-2017 | Michal Jakl, Jindřich Fanfrlík, Jana Jaklová Dytrtová, Rapid Communications in Mass Spectrometry, 2017

Rationale The frequently used pesticide cyproconazole (Cyp) interacts with the essential elements commonly present in soil which play important roles in various enzymatic processes. These interactions predetermine the Cyp degradation pathways. We suggest a simple experimental and theoretical ...

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Investigation of the effects of storage and freezing on mixes of heavy‐labeled metabolite and amino acid standards

30-Oct-2017 | Rachel Culp‐Hill, Julie A. Reisz, Kirk C. Hansen, Angelo D’Alessandro; Rachel Culp‐Hill, Julie A. Reisz, Kirk C. Han ..., Rapid Communications in Mass Spectrometry, 2017

Abstract RATIONALE High‐throughput metabolomics has now made it possible for small/medium‐sized laboratories to analyze thousands of samples/year from the most diverse biological matrices including biofluids, cell and tissue extracts. In large scale metabolomics studies, stable ...

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High‐performance liquid chromatography/high‐resolution mass spectrometry for the characterization of transformation products of ionic liquids

30-Oct-2017 | Debora Fabbri, Paola Calza, Giorgio Noè, Valentina Santoro, Claudio Medana, Rapid Communications in Mass Spectrometry, 2017

Abstract RATIONALE Ionic liquids (ILs) are a subject of active research in the field of alternative solvents. We studied the behaviour of a piperidine IL, 1‐butyl‐1‐methylpiperidinium tetrafluoroborate (BMPA), through the elucidation of its transformation products (TPs) in ...

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Thermodynamic properties of the La2O3–ZrO2 system by Knudsen effusion mass spectrometry at high temperature

30-Oct-2017 | S.M. Shugurov, O.Yu. Kurapova, S.I. Lopatin, V.G. Konakov, E.A. Vasil'eva, Rapid Communications in Mass Spectrometry, 2017

Abstract Rationale Zirconia doped with a lanthanum oxide system is of high interest due to its exceptional thermal stability for the development of high performance ceramics. It possesses the beneficial properties of pure zirconia, such as heat resistance, mechanical strength and inertness, ...

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Isomer separation and effect of the degree of polymerization on the gas‐phase structure of chondroitin sulfate oligosaccharides analyzed by ion mobility and tandem mass spectrometry

30-Oct-2017 | Salomé Poyer, Chrystel Lopin‐Bon, Jean‐Claude Jacquinet, Jean‐Yves Salpin, Régis Daniel, Rapid Communications in Mass Spectrometry, 2017

RATIONALE Chondroitin sulfate (CS) glycosaminoglycans are bioactive sulfated polysaccharides comprising repeating units of uronic acid and N‐acetyl galactose sulfated at various positions. The optimal length and sulfation pattern of the CS bioactive sequences remain elusive so that ...

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“Bottom‐up” in situ proteomic differentiation of human and non‐human haemoglobins for forensic purposes by MALDI‐ToF‐MS/MS

08-Sep-2017 | K.P. Kirkbride, S. Kamanna, J. Henry, N. Voelcker, A. Linacre, Rapid Communications in Mass Spectrometry, 2017

ABSTRACT RATIONALE The detection and identification of human blood on crime‐related items are of particular relevance to many investigations because shed blood can provide evidence of violent contact between individuals. However, for any detection and identification technique, specificity is ...

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Phosphopeptide Enrichment with Cross‐Linked Os(II)(dmebpy)2Cl‐Derivatized Acrylamide and Vinylimidazole Copolymer

08-Sep-2017 | Jie Zhou, Rapid Communications in Mass Spectrometry, 2017

Abstract Rationale Reversible phosphorylation of proteins catalyzed by kinases and phosphatases plays a key regulatory role of intracellular biological processes. Protein phosphorylation profiling is still a challenge due to its low stoichiometry, diversity of phosphorylated protein forms, ...

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