alexa A First Pilot Study on the Sorption of Environmental Pollutants on Various Microplastic Materials | OMICS International | Abstract
ISSN: 2380-2391

Journal of Environmental Analytical Chemistry
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Research Article

A First Pilot Study on the Sorption of Environmental Pollutants on Various Microplastic Materials

Caroline Goedecke1,2#*, Ulrike Mülow-Stollin1,2#*, Selina Hering2, Janine Richter1, Christian Piechotta1, Andrea Paul1 and Ulrike Braun1

1Bundesanstalt für Materialforschung und –prüfung (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany

2Technische Universität Berlin, Department of Environmental Technology, Straße des 17. Juni 135, 10623 Berlin, Germany

#The authors contributed equally to this paper

*Corresponding Author:
Caroline Goedecke
Bundesanstalt für Materialforschung
und –prüfung (BAM), Richard-Willstätter-Str. 11
12489 Berlin, Germany
Tel: +493081045519
E-mail: [email protected]
 
Ulrike Mülow-Stollin
Bundesanstalt für Materialforschung
und –prüfung (BAM), Richard-Willstätter-Str. 11
12489 Berlin, Germany
Tel: +493081045509
E-mail: [email protected]

Received date: March 23, 2017; Accepted date: March 28, 2017; Published date: March 31, 2017

Citation: Goedecke C, Mülow-Stollin U, Hering S, Richter J, Piechotta C, et al. (2017) A First Pilot Study on the Sorption of Environmental Pollutants on Various Microplastic Materials. J Environ Anal Chem 4:191. doi:10.4172/2380-2391.1000191

Copyright: © 2017 Goedecke C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

With the drastic increase in plastic production, the input of plastic particles into the environment has become a recognised problem. Xenobiotics are able to sorb to polymer materials, and this process is further enhanced where they encounter microplastics (plastic fragments <5 mm). In this work we studied the sorption of metformin, a type-2 diabetes drug, and difenoconazole, a fungicide, onto the virgin polymer materials polyamide (PA), polypropylene (PP), and polystyrene (PS). Additionally, PP was cryo-milled and PA was treated with acid to investigate the influence of an increase in surface area and chemical modification. The material properties were also studied by dynamic scanning calorimetry (DSC), gel permeation chromatography (GPC) and Fourier transform infrared spectroscopy (FTIR). Sorption experiments were performed on the basis of a full factorial design examining the effect of agitation, pH value, and salinity. Experimental results showed that difenoconazole sorbs readily to all microplastics, whereas the more polar analyte metformin did not show any affinity to the materials used. For difenoconazole the governing factor in all cases is agitation, while both pH and salinity exhibited only a slight influence. The modification of polymers leads to enhanced sorption, indicating that an increase in surface area (cryo-milled PP) or inner volume (acid-treated PA) strongly favours adsorption. Moreover, long-term experiments demonstrated that the time until equilibrium is reached depends strongly on the particle size.

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