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73 Newest Publications about the topic calibration standards

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Quantification of six potential unspecific human biomarkers of a 1‐vinyl‐2‐pyrrolidone exposure in Sprague‐Dawley rat urine using gas chromatography coupled with triple mass spectrometry

25-Aug-2017 | J. Bertram, T. Schettgen, T. Kraus, Rapid Communications in Mass Spectrometry, 2017

Abstract RATIONALE The monomer 1‐vinyl‐2‐pyrrolidone (VP) is a substance with excellent solvent features. It is used in a wide variety of pharmaceutical, cosmetic, food industrial or technical applications and produced in industrial scale. Since VP has caused adenocarcinoma of the nasal ...

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Gelatin gels as multi-element calibration standards in LA-ICP-MS bioimaging: fabrication of homogeneous standards and micro-homogeneity testing

23-Aug-2017 | Martin Šala; Vid S. Šelih; Johannes van Elteren, Analyst, 2017

Highly homogeneous multi-element gelatin calibration standards were fabricated for quantitative LA-ICP-MS bioimaging. Heterogeneity issues caused by the so-called “coffee-stain” and/or “Marangoni” effects were found to be element-dependent but could be circumvented by careful selection of ...

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IJMS, Vol. 18, Pages 1800: Determination of Sphingosine-1-Phosphate in Human Plasma Using Liquid Chromatography Coupled with Q-Tof Mass Spectrometry

18-Aug-2017 | Egom, Emmanuel Eroume ; Fitzgerald, Ross ; Canning, Rebecca ; Pharithi, Rebabonye B. ; Murphy, Colin ; Maher, Vincent, International Journal of Molecular Sciences, 2017

IJMS, Vol. 18, Pages 1800: Determination of Sphingosine-1-Phosphate in Human Plasma Using Liquid Chromatography Coupled with Q-Tof Mass Spectrometry International Journal of Molecular Sciences doi: 10.3390/ijms18081800 Authors: Emmanuel Eroume-A Egom Ross Fitzgerald Rebecca ...

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Calcium determination in biochar-based fertilizers by laser-induced breakdown spectroscopy using sodium as internal standard

09-Jul-2017 | Author(s): Carla Pereira de Morais, Ariane Isis Barros, Dário Santos Júnior, Clóvis Augusto Ribeiro, Marisa ..., Microchemical Journal, 2017

Publication date: Available online 6 July 2017 Source:Microchemical Journal Author(s): Carla Pereira de Morais, Ariane Isis Barros, Dário Santos Júnior, Clóvis Augusto Ribeiro, Marisa Spirandeli Crespi, Giorgio Saverio Senesi, José Anchieta Gomes Neto, Edilene Cristina ...

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Direct analysis of marine macroalgae for determination of macro minerals by energy dispersive X-ray fluorescence

14-May-2017 | Author(s): Geysa B. Brito, Leonardo S.G. Teixeira, Maria Graças A. Korn, Microchemical Journal, 2017

Publication date: September 2017 Source:Microchemical Journal, Volume 134 Author(s): Geysa B. Brito, Leonardo S.G. Teixeira, Maria Graças A. Korn Determination of the macro mineral composition of macroalgae is important considering the relevant applications and potential consequences ...

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Quantitative total reflection X‐ray fluorescence analysis of directly collected aerosol samples

08-Feb-2017 | J. Prost, P. Wobrauschek, C. Streli, X-Ray Spectrometry, 2017

In this paper, the results of a feasibility study, investigating a new quantification method of directly collected aerosol samples, are shown. As sampling substrates, quartz reflectors suitable for total reflection X‐ray fluorescence analysis were used, and the spot patterns produced by a ...

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Rapid and Reliable HPLC Method for the Simultaneous Determination of Dihydroxyacetone, Methylglyoxal and 5-Hydroxymethylfurfural in Leptospermum Honeys

18-Nov-2016 | Matthew Pappalardo; Linda Pappalardo; Peter Brooks, PLoS ONE, 2016

by Matthew Pappalardo, Linda Pappalardo, Peter Brooks A reliable determination of dihydroxyacetone, methylglyoxal and 5-hydroxymethylfurfural is essential to establishing the commercial value and antimicrobial potential of honeys derived from the Leptospermum species endemic to Australia and ...

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Preparation of arsenic‐containing white rice grains as calibration standards for X‐ray fluorescence analysis of total arsenic in cereals

01-Aug-2016 | Masaki Tatsumi, Tetsuo Inui, Kenta Hagiwara, Atsushi Ohbuchi, Yuya Koike, Toshihiro Nakamura, X-Ray Spectrometry, 2016

A preparation method of arsenic‐containing white rice grains as calibration standards was developed for the X‐ray fluorescence (XRF) analysis of arsenic in rice grains. Calibration standards were prepared by adding 10 g of white rice grains (from Japan) to 100 ml methanol‐containing ...

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Low Charge and Reduced Mobility of Membrane Protein Complexes Has Implications for Calibration of Collision Cross Section Measurements

13-May-2016 | Timothy M. Allison; Michael Landreh; Justin L. P. Benesch; Carol V. Robinson, Analytical Chemistry, 2016

Ion mobility mass spectrometry of integral membrane proteins provides valuable insights into their architecture and stability. Here we show that, due to their lower charge, the average mobility of native-like membrane protein ions is approximately 30% lower than that of soluble proteins of ...

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Quantification of hydroperoxides by gas chromatography‐flame ionization detection and predicted response factors

02-May-2016 | Sabine Leocata, Sandy Frank, Ying Wang, Michael J. Calandra, Alain Chaintreau, Flavour and Fragrance Journal, 2016

Abstract The quantification of hydroperoxides is crucial in several areas, in particular in the fragrance domain, because they have been identified as skin sensitizers. The reference compounds necessary to calibrate the instruments have very limited availability, and require drastic storage ...

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