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Analysis of gadolinium in algae and waste hospital water
Authors: Krejčová Anna | Návesník Jakub | Zelenková Jana | Černohorský Tomáš | Pouzar Miloslav
Year: 2013
Type of publication: článek v odborném periodiku
Name of source: Annales de Biologie Clinique
Publisher name: JOHN LIBBEY EUROTEXT LTD
Place: Montrouge
Page from-to: 185-185
Titles:
Language Name Abstract Keywords
cze Stanovení gadolinia v řasách a nemocničních odpadních vodách Cílem práce bylo ověření vhodnosti orthogonální time of flight hmotnostní spektrometrie s ionizací v indukčně vázaném plazmatu (o-TOF-ICP-MS) pro stanovení lanthanoidů ve vzorcích odpadních nemocničních vod a říčních vod za účelem vyhodnocení přítomnosti gadolinia antropogenního původu. Dále byl vypracován postup přípravy vzorku řas pro následné stanovení gadolinia pomocí optické emisní spektrometrie s ionizací v indukčně vázaném plazmatu (ICP-OES) a o-TOF-ICP-MS k vyhodnocení růstových pokusů. Gd; řasy; nemocniční odpadní vody; ICP-MS
eng Analysis of gadolinium in algae and waste hospital water Contrast mediums based on gadolinium compounds have been utilized for an imaging using magnetic resonance since 1988. These Gd-complexes show great stability and inertness inside human body and therefore are excreted in an unchanged form. Excreted Gd compounds follow a regular way of waste water disposal and even despite this process; Gd persists and continues to surface waters. An increased concentration of Gd of an anthropogenic origin in surface waters known as the positive gadolinium anomaly have been studied recently. Anthropogenic Gd enters water ecosystems and can accumulate in river plants, organisms and sediments. Natural food chain could be the way of possible health risk for humans. With regards to widespread utilizing of Gd based contrast mediums for magnetic resonance, a monitoring and elimination of anthropogenic gadolinium in natural ecosystems appears to be necessary. In our study, a possible use of time of flight inductively coupled plasma mass spectrometry for determination of lanthanides, especially Gd, in waste water was investigated. Examined waste waters were provided by two east Czech hospitals (College hospital in Hradec Králové and Regional hospital of Pardubice). Obtained data proved the positive gadolinium anomaly. Second part of this study was dedicated to the bioaccumulation experiment. Algae of family Chlorella was cultivated in Gd mediums. Bioaccumulation factors were assessed after one months of cultivation. We faced a contamination problem during the bioaccumulation experiment as well problems connected with a small sample preparation. Gd; waste hospital water, algae; ICP-MS

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