@article{ switaj-zawadka_new_2004,
  title = {New procedure of silica gel surface modification - Preparation of gaseous standard mixtures for calibration purposes},
  volume = {1033},
  issn = {0021-9673},
  url = {http://dx.doi.org/10.1016/j.chroma.2004.01.025},
  doi = {<Go to ISI>://WOS:000220290100015},
  abstract = {The new type of silica gel surface modification with using the trimethylamine as a reagent is described. The samples of chemically modified silica gel have been used for generation of gaseous standard mixtures (methyl chloride as a measurand) using the technique of thermal decomposition of the surface compound. The main aim of the research was to check the suitability of the new type of silica gel surface modification for obtaining methyl chloride as a measurand of gaseous standard mixture. The gaseous standard mixture obtained with using this technique was used for calibration of a thermal desorber-gas chromatography-flame ionization detector ({TD-GC-FID)} system. The homogeneity of coverage of silica gel surface with the immobilized compound has been evaluated. The full uncertainty budget of determination of liberated amount of methyl chloride has been calculated. The average amount of methyl chloride liberated from the unit sample of chemically modified silica gel is 3.59 +/- 0.13 mg g(-1). The influence of the modification way on the amount of liberated analyte has also been determined. (C) 2004 Elsevier {B.V.} All rights reserved.},
  number = {1},
  journal = {Journal of Chromatography A},
  author = {Switaj-Zawadka, A. and Konieczka, P. and Szczygelska-Tao, J. and Biernat, J. F. and Namiesnik, J.},
  year = {2004},
  pages = {145--151}
}

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