Badania zawartości ksenoestrogenów w wodzie metodą ekstrakcji sorpcyjnej

Dudziak, M.; Bodzek, M.

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Tytuł artykułu

Badania zawartości ksenoestrogenów w wodzie metodą ekstrakcji sorpcyjnej

Autorzy

Dudziak M. , Bodzek M.

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Warianty tytułu

Analyzing the content of xenoestrogens in water by sorptive extraction

Języki publikacji

Abstrakty

Przedstawiono badania zawartości ksenoestrogenów w wodzie z wykorzystaniem mało znanej metody ekstrakcji sorpcyjnej (SBSE) oraz analizy GC/MS. Z grupy ksenoestrogenów do badań wybrano 4-tert-oktylofenol, 4-nonylofenol i bisfenol A. Do ekstrakcji sorpcyjnej zaproponowano pręt z polidimetylosiloksanu o długości 2 cm. Badane związki upochodniono w wodzie do pochodnych acylowych z wykorzystaniem bezwodnika kwasu octowego. Do uwolnienia ksenoestrogenów z elementu sorpcyjnego wykorzystano desorpcję do niewielkiej ilości rozpuszczalnika organicznego (LD - liquid desorption) w polu ultradźwiękowym. Wydajność ekstrakcji ksenoestrogenów w przypadku wody wodociągowej i powierzchniowej, w zakresie stężeń 40÷200 ng/cm3, była większy niż 60%. Precyzja oznaczeń ilościowych metody nie przekraczała 11%, a granica detekcji wynosiła 1 ng/cm3 w przypadku 4-tert-oktylofenolu i bisfenolu A oraz 5 ng/cm3 w przypadku 4-nonylofenolu. Opisany sposób uwolnienia zaadsorbowanych związków z elementu sorpcyjnego jest konkurencyjny w stosunku do techniki SBSE z desorpcją termiczną, wykorzystywanej w laboratoriach analizy próbek środowiskowych.

The content of xenoestrogens in water was determined using the rather poorly known Stir Bar Sorptive Extraction (SBSE) technique, as well as GC/MS analysis. Of the xenoestrogen group the following compounds were selected for the study: 4-tert-octylphenol, 4-nonylphenol and bisphenol A. For soptive extraction the use of a polydimethyloxosilane bar (2 cm in length) was proposed. Using acetic acid anhydride, the compounds were derivatized in water to acyl derivatives. In order to release the xenoestrogens from the sorptive element, use was made of desorption to a small amount of an organic solvent (liquid desorption, LD) in an ultrasonic field. For tap and surface waters, at the concentration of xenoestrogens ranging between 40 and 200 ng/cm3, the efficiency of extraction exceeded 60%. The accuracy of the quantitative determinations performed with this method was lower than 11%, the limits of detection being 1 ng/cm3 for 4-tert-octylphenol and bisphenol A, and 5 ng/cm3 for 4-nonylphenol. The method of releasing the adsorbed compounds from the sorptive element in the way described above is competitive with the SBSE technique which involves thermal desorption and is used in laboratories for environmental analysis.

Słowa kluczowe

ekstrakcja sorpcyjna GC-MS ksenoestrogeny oczyszczanie wody

GC-MS xenoestrogens water treatment SBSE

Wydawca

Polskie Zrzeszenie Inżynierów i Techników Sanitarnych, Oddział Dolnośląski

Czasopismo

Ochrona Środowiska

Rocznik

2009

Tom

Vol. 31, nr 1

Strony

9--14

Opis fizyczny

Bibliogr. 31 poz., rys., tab.

Twórcy

autor

Dudziak M.

autor

Bodzek M.

Politechnika Śląska, Wydział Inżynierii Środowiska i Energetyki, Instytut Inżynierii Wody i Ścieków, ul. S. Konarskiego 18, 44-100 Gliwice, mariusz.dudziak@polsl.pl

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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