Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Celina Pieszko"'
Autor:
Marcin Sajdak, Monika Zajemska, Miloud Ouadi, Walter Mucha, Edyta Misztal, Celina Pieszko, Grzegorz Gałko
Publikováno v:
Energies, Vol 16, Iss 9, p 3945 (2023)
One of the greatest challenges humankind currently faces is global warming, mainly caused by greenhouse gas emissions. Here we have attempted to show how thermal conversion products, specifically from the pyrolysis of biomass wastes such as sewage sl
Externí odkaz:
https://doaj.org/article/7aa47ed46d7c4a2cb0e20696636b6b62
Publikováno v:
Journal of Planar Chromatography – Modern TLC. 28:323-332
The aim of this work was to determine the correlations between retention factors of selected triketone herbicides (mesotrione MES, sulcotrione SUL, and tembotrione TEMB), their derivatives (AMBA, MNBA, CMBA, CHD, and TEMB MET), and their physicochemi
Autor:
Marcin Sajdak, Celina Pieszko
Publikováno v:
Open Chemistry, Vol 11, Iss 4, Pp 610-618 (2013)
Chemometric methods are mostly used to optimise technological processes and analytical procedures. Applying chemometric methods in environmental tests may reveal relationships among chemical elements in biomes. Cluster analysis and principal componen
Autor:
Marcin Sajdak, Celina Pieszko
Publikováno v:
Ecological Chemistry and Engineering S. 20:79-91
Contents of Zn, Cd, Ni, Mn, Cu, Pb and Fe in 36 samples of Scots pine collected in 9 sites located in the Upper Silesia Province have been determined using AAS technique. The samples were digested before the analysis. On the basis of cluster analysis
Autor:
Marcin Sajdak, Celina Pieszko
Publikováno v:
Open Chemistry, Vol 10, Iss 5, Pp 1696-1706 (2012)
Chemometric analysis was performed to determine the heavy metal content, such as Zn, Cd, Ni, Mn, Cu, Pb, and Fe, in 36 samples of Scots Pine taken from 9 locations within the Upper Silesian Industrial Basin. The samples, after being pre-processed, we
Publikováno v:
Journal of Analytical Chemistry. 65:1228-1234
The method of UV/VIS derivative spectrophotometry for the determination of caffeine and B vitamins in energy drinks after solid phase extraction has been developed. Caffeine has been determined in the mixture with B2 vitamin with zero-crossing techni
Publikováno v:
Journal of Environmental Science and Health, Part A. 37:1841-1848
Derivative spectrophotometry (DS) was applied for the determination of selected aromatic amines in two-compound mixtures. Following pairs were analysed: o- and m-toluidine, o- and p-toluidine, m- and p-toluidine; o- and m-phenylenediamine (PDA), o- a
Autor:
Irena Baranowska, Celina Pieszko
Publikováno v:
Analytical Letters. 35:473-486
The method for the determination of propazine, simazine, bromacil, hexazinone and metoxuron by zero order and derivative spectrophotometry has been worked out. In the three-component mixtures it was possible to analyse metoxuron and bromacil in the p
Autor:
Irena Baranowska, Celina Pieszko
Publikováno v:
Journal of Chromatographic Science. 38:211-218
A high-performance liquid chromatography procedure or the determination of the herbicides simazine, propazine, bromacil, metoxuron, and hexazinone is elaborated. Stationary phases RP 8 and RP 18 and mixtures of methanol-water (2:1 and 1:1, v/v) as a
Publikováno v:
Talanta. 41:1133-1135
UV spectra and absorption coefficients of biologically active copolymers of maleic anhydride with carbohydrates, terpenes and 1,3-dioxane derivatives were measured. The quantitative relationships of absorbance vs concentrations of polymers were deter