Polymeric and silica sorbents on endocrine disruptors determination

Polymeric and silica sorbents on endocrine disruptors determination

Endocrine disrupting determination at low concentration levels comprises one of the most important targets in environmental analytical chemistry. In spite of inherent high sensitivities obtained for HPLC, these techniques have some limitations depending on the contaminants. As a result, interest in...

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Bibliographic Details
Published in:Desalination and water treatment Vol. 54; no. 1; pp. 156 - 165
Main Authors: Vidal, Carla B., Feitosa, Alexandra V., Pessoa, Germana P., Raulino, Giselle S.C., Oliveira, André G., dos Santos, André B., Nascimento, Ronaldo F.
Format: Journal Article
Language:English
Published: Abingdon Elsevier Inc 03-04-2015
Elsevier Limited
Subjects:
Adsorbents
Adsorption
Bisphenol A
Breakthrough volume
Contaminants
Correlation analysis
Disrupting
Endocrine disruptors
Hormones
Liquid chromatography
Polymers
Recovery
Silica
Silicon dioxide
Sorbents
SPE
Styrene
Endocrine disruptors
Breakthrough volume
SPE
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Summary:Endocrine disrupting determination at low concentration levels comprises one of the most important targets in environmental analytical chemistry. In spite of inherent high sensitivities obtained for HPLC, these techniques have some limitations depending on the contaminants. As a result, interest in preconcentration using solid–phase extraction (SPE) still continues increasingly for endocrine disrupting determinations by HPLC due to the high accuracy of this method. In this work, we evaluated three different adsorbents in preconcentration of endocrine disruptors in three different categories: pharmaceuticals (sulphamethoxazole, trimethoprim and diclofenac), hormones (estrone, 17β-estradiolacetate and 17β-estradiol) and plastic materials (bisphenol A) in multicomponent aqueous solution using the combination SPE -HPLC. The adsorbents investigated were such as modified silica (octadecylsilane)—DSC-18 (Supelco) and two polymers, a divinylbenzene-N-vinilpirolidona—Oasis® HLB (Waters) and a styrene-divinylbenzene modified with butyrolactone—Strata-X™ (Phenomenex). The parameters selected to evaluate the best adsorbent were sample loaded, breakthrough volume, recovery and adsorption capacity. The results showed that the polymeric sorbents Oasis and Strata presented good separation and selective ability, then the most efficient sorbent for the described test was applied to the determination of endocrine disruptor (ED) in a wastewater real sample. Almost all endocrine disruptors studied in the present work were found and quantified in the effluent sample, suggesting the selected cartridge could be useful for preconcentration technique of endocrine disruptors in environmental analytical applications. Correlation analysis identified the adsorption parameters which had the most influence in efficiency of SPE adsorbents, such as initial ED concentration, breakthrough volume and recovery.
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ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2014.880377