Session 4 - Microplastics in the marine environment

[CEST2019_00984] A small Overview of the current, Natural & Affected Environments by Microplastiscs
by Mafina K., Robertson I.

There is a growing concern and increasing evidence that microplastics in the World’s rivers and oceans are having an affect on marine environments; and ultimately into the food chain. Infrared Spectroscopy and Microscopy are well- established analytical techniques for defining, identifying and categorising of plastic materials. However, it is also good to remember that microplatics is a term that consists of diverse chemicals of all shapes, sizes, coulour etc.

Session: 4, Room: D, at Thu, 09/05/2019 - 09:15 to 09:30
Oral presentation in Microplastics in the marine environment
[CEST2019_00000] "Aboard the "Typhoon": Surveying marine litter in the Saronic Gulf. A funder's perspective"
by Dr Angeliki Kosmopoulou Executive Director Athanasios C. Laskaridis Charitable Foundation
Session: 4, Room: D, at Thu, 09/05/2019 - 09:00 to 09:15
Oral presentation in Microplastics in the marine environment
[CEST2019_00898] A method for the extraction of microplastics from solid samples using olive oil
by Scopetani C., Pflugmacher S., Pellinen J.

Microplastics (MPs) extraction from sediment, sand and soil samples is a challenge that the scientific community is facing nowadays; currently there are no standardized and validated protocols and the most common methods rely on density separation techniques, often unable to separate high density polymers. The aim of the present work was to develop a non-density based, efficient and cost effective method. We tested an oil based extracting technique exploiting the oleophilic properties of plastic.

Session: 4, Room: D, at Thu, 09/05/2019 - 10:36 to 10:39
Flash presentation in Microplastics in the marine environment
[CEST2019_00782] POPs in Groundwater: Exposure profiles of PAHs and OCPs at an agricultural site of a north Indian terai region
by Masih A. ,Lal J.K.

Here, we introduce OMCEC, a laboratory-based system that simultaneously measures the material composition, geometric properties, and motion of individual suspended aggregates in a non-invasive and non-destructive way. OMCEC consists of a full-color high-resolution optical system and real-time algorithms for material segmentation based on light spectra emission analysis, quantification of various geometrical properties, and motion detection with particle tracking velocimetry (PTV).

Session: 4, Room: D, at Thu, 09/05/2019 - 10:00 to 10:15
Oral presentation in Microplastics in the marine environment
[CEST2019_00805] Investigating the Potential of UV-excited Photoluminescence Spectroscopy for the Identification of Plastics
by Gies S., Schömann E.-M., Radiev Y., Prume J., Koch M.

In this study, we investigate photoluminescence (PL) spectroscopy with UV excitation as an alternative method for the detection and identification of plastic materials. The PL is excited at 266 nm. Spectra of the most widely used plastic materials are analyzed. Based on these results, it should be possible to develop a method to reliably identify different plastic materials in environmental samples solely based on their PL emission. In addition, this technique is inherently non-destructive and fast.

Session: 4, Room: D, at Thu, 09/05/2019 - 10:33 to 10:36
Flash presentation in Microplastics in the marine environment
[CEST2019_00502] A Model of Marine Litter in Sustainable Fisheries
by Nguyen L., Brouwer R., Beukering P.

This paper studies the dynamics of an economy specialized in fisheries facing a rising marine litter problem. We present a dynamic optimization model to explain the mechanism through which marine litter causes inefficiencies in the fishery sector. We study the dynamic properties of the model when the externality of marine litter is not taken into account and when it is internalized via the price of fish. We find that when the litter is internalized through the price of fish, the ocean quality is improved but fish catch decreases.

Session: 4, Room: D, at Thu, 09/05/2019 - 10:15 to 10:30
Oral presentation in Microplastics in the marine environment
[CEST2019_00289] Adsorption of silver on virgin and aged microplastics
by Kalčikova G., Jemec Kokalj A., Marolt G., Žgajnar Gotvajn A.

When microplastics enter aquatic ecosystems they are submitted to environmental aging which change their properties. Especially colonization by microorganisms alter their properties in term of density and adsorption properties. Hence the aim of the study was to evaluate the adsorption and leaching properties of virgin and aged microplastics. Silver (in form of silver nitrate) was selected as a model metal used for adsorption study. Results showed that silver is quickly adsorbed on both types of microplastics while aged microplastics adsorbed significantly more silver than virgin ones.

Session: 4, Room: D, at Thu, 09/05/2019 - 10:30 to 10:33
Flash presentation in Microplastics in the marine environment
[CEST2019_00292] Multivariate Analysis of Large µ-FTIR Data Sets in Search of Microplastics
by Wander L., Vianello A., Vollertsen J., Braun U., Paul A.

µ-FTIR spectroscopy is a widely used tech¬¬nique in microplastics research. It allows to simultane¬ously characterize the material of the small particles, fibers or fragments, and to specify their size distribution and shape. Modern detectors offer the possibility to perform two-dimensional imaging of the sample providing detailed information. However, data sets are often too large for manual evaluation calling for automated microplastic identification. Library search based on the comparison with known reference spectra has been proposed to solve this problem.

Session: 4, Room: D, at Thu, 09/05/2019 - 09:45 to 10:00
Oral presentation in Microplastics in the marine environment
[CEST2019_00233] Identification and Quantification of Microplastic in Sewage systems by TED-GC-MS
by Altmann K., Goedecke C., Bannick C.G., Abusafia A., Scheid C., Steinmetz H., Braun U.

The number of publications reporting the amount of microplastic (MP) all over the world increased rapidly. Methods used so far are very time consuming and not able to provide information on total contents. As harmonised sampling, sample preparation and analysis strategies are missing different studies can hardly be compared and quantitative data, including identification and mass contents of the polymers found, are missing. This leads to a lack of comprehensive understanding of MP occurrence, source and entry pathways into the environment.

Session: 4, Room: D, at Thu, 09/05/2019 - 09:30 to 09:45
Oral presentation in Microplastics in the marine environment