Temat: środki kontrastowe - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Monitoring of bacterial biodiversity in anaerobic membrane bioreactors (AnMBRs) dealing with wastewater containing X-ray contrast media compounds
Autorzy:: Węgrzyn, A.
Żabczyński, S.
Powiązania:: https://bibliotekanauki.pl/articles/207395.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: bacteria
biodiversity
bioreactors
contrast media
electrophoresis
anaerobic membrane bioreactor
bacterial biodiversity
hospital wastewater
iodinated contrast media
X ray contrast media
bakterie
bioróżnorodność
bioreaktory
środki kontrastowe
elektroforeza
membranowy bioreaktor beztlenowy
bioróżnorodność bakterii
ścieki szpitalne
środki kontrastowe zawierające jod
rentgenowskie środki kontrastowe
Opis:: Iodinated contrast media compounds (ICM) have been identified in wastewater within the last 20 years. In this study, the biodiversity of activated sludge in anaerobic membrane bioreactors dealing with synthetic hospital wastewater with addition of ICM was investigated, using fluorescent in situ hybridization (FISH) and denaturing gradient gel electrophoresis (DGGE). During the adaptation of microorganisms to anaerobic growth conditions and to ICM presence, differences in the content of Alpha- and Betaproteobacteria were noted and bioreactors showed higher biological diversity (H = 2.9), suggesting that ICM were not toxic to the bacteria. The long sludge age had the strongest influence on the composition of activated sludge biocenosis.
Źródło:: Environment Protection Engineering; 2014, 40, 1; 151-164
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Wpływ środków kontrastujących na środowisko naturalne
Effect of contrast media on the environment
Autorzy:: Hildebrandt, Magdalena
Nowicki, Tomasz K.
Powiązania:: https://bibliotekanauki.pl/articles/2200418.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Chemiczne
Tematy:: iodinated contrast media
natural environment
biodegradation
ozonation
gadolinium toxicity
jodowe środki kontrastowe
środowisko naturalne
biodegradacja
ozonowanie
toksyczność gadolinu
Opis:: Contrast media are used in imaging modalities such as x-rays, ultrasound, computed tomography and magnetic resonance. Contrast media enhance tissues to help make a diagnosis. This review coversinformation about types of contrast agents, their chemical compositions, routes of administration, imaging applications and biological effects. Scientific studies indicate the presence of contrast agents in wastewater. They are not fully removed in conventional treatment processes and therefore enter surface waters with treated wastewater. At the University Clinical Center in Gdansk, the most frequently used contrast agents are iodinated contrast media, secondly gadolinium contrast agents. Iodinated contrast media are pharmaceuticals which are metabolically stable during their passage through the body and are excreted into wastewater. All transformation products of the iodinated contrast medium iopromide were found in municipal effluents because of their formation during biological wastewater treatment. Four products formed at the end of the transformation pathway were also found in bank filtrate and in groundwater of a wastewater irrigation area. The contrast agents themselves do not carry a risk of toxicity, but it can be predicted from the chemical structure that the transformation products may be toxic and mutagenic. On the other hand, MRI contrast agents can cause histopathological changes. Gadolinium deposition in tissues has been proven. The toxicity of gadolinium is well known. Further research on the toxicity of gadolinium contrast agents is needed to be able to prevent unwanted consequences and produce safe contrast agents. Conventional methods currently used do not ensure high efficiency of removing pharmaceuticals from wastewater, which makes it necessary to introduce advanced methods of treatment. The article presents strategies for removal of the compounds in wastewater-treatment plants.
Źródło:: Wiadomości Chemiczne; 2023, 77, 3-4; 201--213
0043-5104
2300-0295
Pojawia się w:: Wiadomości Chemiczne
Dostawca treści:: Biblioteka Nauki

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