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Wyszukujesz frazę "Gościańska, Joanna" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Metody analityczne badania preparatów kosmetycznych - wczoraj i dziś
Analitical methods for testing cosmetic products - in the past and nowadays
Autorzy:
Olejnik, Anna
Gornowicz-Porowska, Justyna
Gościańska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2200575.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
produkty kosmetyczne
chromatografia
spektrometria mas
test aplikacyjny
badania stabilności
cosmetic products
chromatography
mass spectrometry
application test
stability studies
Opis:
The safety and quality of each cosmetic product is tested before it is introduced to the market. There are highly regulated requirements that producers should comply with. However, as the cosmetic products are highly complexed mixture of different ingredients, detailed characterization of their composition remains still a challenge. Currently, due to the development of modern technologies, a wide range of analytical methods are available. Scientists are increasingly adapting highly sophisticated and advanced techniques to precisely identify and quantify the components of cosmetic products. The aim of this article is to present the analytical methods applied to examine cosmetics taking into account their advantages and limitations. The progress made in recent years in the design of novel instruments leading to their greater efficiency, selectivity and sensitivity was also considered. The techniques that are commonly used in the quality control laboratories of cosmetic companies were presented. Cosmetics analysis is not only limited to the characterization of product itself. Today, in vivo tests are very essential to determine the efficacy of formulations directly on the skin surface. Therefore, in this article modern devices dedicated to theses analyses were described in detail.
Źródło:
Wiadomości Chemiczne; 2022, 76, 7-8; 607--633
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorption and electrokinetic studies of sodalite/lithium/poly(acrylic acid) aqueous system
Autorzy:
Wiśniewska, Małgorzata
Franus, Wojciech
Fijałkowska, Gracja
Ostolska, Iwona
Wójcik, Grzegorz
Nosal-Wiercińska, Agnieszka
Gościańska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1450512.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
sodalite
zeolite from fly ash
lithium acquisition
zeta potential
solid surface charge density
poly(acrylic acid) adsorption
mixed adsorbates
Opis:
The synthetic zeolite-sodalite obtained by the hydrothermal conversion of fly ash with aqueous sodium hydroxide was used in the experiments. Its adsorption properties in relation to lithium ions were examined. The effects of: solution pH, presence of polymeric substance – poly(acrylic acid) and order of individual adsorbates addition were determined. To specify the binding mechanism of lithium ions on the sodalite surface, besides adsorption experiments, the measurements leading to the solid surface charge density and zeta potential determination, were performed. As a result, the structure of mixed adsorption layer composed of polymer+metal complexes was characterized. The presented study concerns two important issues: management of environmentally harmful wastes such as coal combustion products as well as searching for new sources of lithium and effective methods of its acquisition.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 6; 158-166
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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