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Wyszukujesz frazę "emerging pollutants" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Determination of trace quantities of dutasteride in water and wastewater by solid phase extraction and high-performance liquid chromatography
Autorzy:
Wasilewska, A.
Madajczyk, M.
Szymański, A.
Urbaniak, W.
Powiązania:
https://bibliotekanauki.pl/articles/347041.pdf
Data publikacji:
2011
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
dutasteride
emerging pollutants
solid-phase extraction (SPE)
liquid chromatography
HPLC
Opis:
Steroid compounds are a kind of pollutants which are increasingly more frequently found in environmental samples. Due to the ever more increasing level of such pollutants and their biological activity, they are of interest to analysts. Our study involved the development of a simple and fast method for the assay of dutasteride in treated industrial waste water using high-performance liquid chromatography. As the steroid concentration in water is much lower than the limit of detection of the UV detector used, the compound assayed in the test water was pre-concentrated using solid-phase extraction. Our procedure has high accuracy and a precision of 2.6%, and the recovery of the analyte from water is 78.6%. The procedure enables the assay of dutasteride at a level of 2 microg/L in water.
Źródło:
Ars Separatoria Acta; 2011, 8; 39-49
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of various agents on stability of 2-phenylbenzimidazole-5-sulfonic acid
Autorzy:
Studziński, W.
Karczmarek, A.
Powiązania:
https://bibliotekanauki.pl/articles/105632.pdf
Data publikacji:
2017
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
PBSA
UV filters
emerging pollutants
photodegradation
oxidation
filtr UV
zanieczyszczenia
fotodegradacja
utlenianie
Opis:
The subject of this study is 2-phenylbenzimidazole-5-sulfonic acid (PBSA), which is one of 26 filters used for personal protection in the European Union. The aim of the study was to investigate the stability of 2- phenylbenzimidazole-5-sulfonic acid and its sodium salt under the influence of various agents. The study has shown that UV radiation, pH value, hydrogen peroxide are important factors limiting the stability of PBSA. The significance of the study is expanding the knowledge about the stability of PBSA.
Źródło:
Acta Innovations; 2017, 25; 5-12
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of 2-phenylbenzimidazole-5-sulfonic acid using heterogeneous photocatalysis
Autorzy:
Studziński, W.
Gackowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/105762.pdf
Data publikacji:
2018
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
PBSA
UV filters
emerging pollutants
photodegradation
titanium dioxide
filtr UV
zanieczyszczenia
fotodegradacja
tlenek tytanu(IV)
Opis:
UV filters are classified as environmental pollutants (emerging pollutants). One of the most frequently detected UV filters in real samples is 2-phenylbenzimidazole-5-sulfonic acid (PBSA). It has been shown that conventional technologies applied in sewage treatment plants are not adapted for complete removal of sunscreen agents. Therefore, there is a trend to undertake activities leading to improvement of water quality by enhancing treatment methods. This is important due to the fact that in an aqueous environment, in the presence of UV radiation or sunlight irradation, PBSA generates reactive oxygen species that can damage the DNA of living organisms. The aim of study was to investigate an effect of pH and TiO2 on PBSA stability in the presence of UV radiation. It was found that the rate of PBSA degradation depends on the catalyst dose and pH of solution. The photocatalysis reaction was carried out in a Heraeus laboratory exposure set equipped with a 150 W medium pressure mercury lamp. The course of PBSA degradation process as a function of time was monitored using UV/VIS spectrophotometer and liquid chromatograph equipped with UV-Vis detector.
Źródło:
Acta Innovations; 2018, 28; 5-13
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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