Wyniki wyszukiwania dla: PTR-MS

• PTR-MS and GC-MS as complementary techniques for analysis of volatiles: A tutorial review

  Publikacja

  • T. Majchrzak
  • W. Wojnowski
  • M. Lubinska-Szczygeł
  • A. Różańska
  • J. Namieśnik
  • T. Dymerski

  - ANALYTICA CHIMICA ACTA - Rok 2018

  This tutorial review is a critical commentary on the combined use of two instrumental analytical techniques, namely GC-MS and PTR-MS. The first mention of such an analytical approach likely appeared after the year 2000 and despite many advantages, it has not been applied very often. Therefore, the aim of this article is to elaborate on the concept of their combined use and to provide a curse tutorial for those considering taking...

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• Rapid Evaluation of Poultry Meat Shelf Life Using PTR-MS

  Publikacja

  • W. Wojnowski
  • T. Majchrzak
  • P. Szweda
  • T. Dymerski
  • J. Gębicki
  • J. Namieśnik

  - Food Analytical Methods - Rok 2018

  The use of proton transfer reaction mass spectrometry (PTR-MS) for freshness classification of chicken and turkey meat samples was investigated. A number of volatile organic compounds (VOCs) were selected based on the correlation (> 95%) of their concentration during storage at 4 °C over a period of 5 days with the results of the microbial analysis. In order to verify if the selected compounds are not sample-specific, a number...

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• Revealing dynamic changes of the volatile profile of food samples using PTR–MS

  Publikacja

  • T. Majchrzak
  • W. Wojnowski
  • A. Wasik

  - FOOD CHEMISTRY - Rok 2021

  Volatile compounds carry valuable information regarding the properties of foodstuffs. Volatiles emitted from food can be used as, for example, indicators of quality, shelf-life, or authenticity. A better understanding of the multitude of transformations which occur during food processing could facilitate the optimisation of production, increase the desirability of food products, and also their wholesomeness. However, as some of...

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• PTR-MS and electronic nose application for volatile fraction analysis of cigar tobacco

  Publikacja

  • P. J. Hać
  • J. Dobosz
  • Ł. Kołodziejski
  • B. Cieślik
  • P. Konieczka

  - Rok 2021

  Cigar consumers attach great importance to the quality of these products. At the same time, cigars are often expensive, so destructive analytical methods of quality control are not being desired. However, it has been found that there are many volatile organic compounds in their headspace. Because of that, proton transfer reaction–mass spectrometry and electronic nose were used to analyse it. The obtained results were used to distinguish...

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• RESIDUE ANALYSIS OF ETU AND PTU BY LC/MS

  Publikacja

  • J. Stocka
  • M. Biziuk

  - Rok 2013

  Dithiocarbamates (DTCs) are important organosulfur compounds, which act as inhibitors of metal dependant and sulphydryl enzymes and have a serious consequence on biological systems. They possess variety of applications in agriculture as fungicides, as well as, in the rubber industry as vulcanization accelerators and antioxidants. In this way, DTCs are the main group of fungicides used to control approximately 400 pathogens of more...

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• Determination of biogenic amines in beers by LC-MS/MS

  Publikacja

  • K. Nalazek-Rudnicka
  • A. Wasik

  - Rok 2016

  Analysis of biogenic amines in beers was carried out by HPLC-MS/MS after their derivatization with p-toluenesulfonyl chloride (tosyl chloride). The developed method has been applied for analysis of eighteen biogenic amines in twelve samples of different kind of beers (Lager, Strong Lager, Schwarzbier, Weizenbier, Pils, nonalcoholic Pils, Stout). The method is sensitive and the results precise for majority of the analytes.

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• MS Report : stwardnienie rozsiane

  Czasopisma

  ISSN: 2084-9435

• International Journal of MS Care

  Czasopisma

  ISSN: 1537-2073

• Nano-structured Pt embedded in the acidic salts of heteropolymolybdate matrices: MS XAFS study

  Publikacja

  • A. Witkowska
  • S. Dsoke
  • R. Marassi
  • A. Di Cicco

  - Synchrotron Radiation in Natural Science - Rok 2014

  Multiple-scattering extended X-ray absorption fine structure (MS EXAFS) study combined with TEM and XRD analysis of a novel Pt-based catalyst operating at low temperature fuel cells (FCs) is presented. Innovation in the case of the considered catalyst resides in the use of a porous inorganic matrix of acidic heteropolymolybdate salts as a catalyst support. Obtained results show the relation between the matrix composition and the...

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• Nano-structured Pt embedded in acidic salts of heteropolymolybdate matrices: MS EXAFS study

  Publikacja

  • A. Witkowska
  • S. Dsoke
  • R. Marassi
  • A. DiCicco

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2015

  A structural study of Pt nano-catalysts is presented in the paper. The innovation in the case of the considered catalytic materials resides in the use a meso-microporous inorganic matrix of heteropolyacid salt of composition X2.5H0.5YMo12O40 where X = Rb, Cs and Y = P, Si as a catalyst support. Metallic nanoparticles were created by platinum ions reduction in a hot H2/Argon stream and were mainly located into matrix pores. As the...

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