Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 11, 2016
|
|
---|---|---|
Article Number | 16014 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.2971/jeos.2016.16014 | |
Published online | 14 February 2016 |
Regular paper
Spectroscopic evidence of anthropogenic compounds extraction from polymers by fluorescent dissolved organic matter in natural water
1
Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky University of Oldenburg, Schleusenstrasse 1, 26382 Wilhelmshaven, Germany
2
Air and Water Quality Laboratory, University of Panama, 0824, Panama, Republic of Panama
3
Jade University of Applied Sciences, Department of Engineering, F.-Paffrath-Str. 101, 26382 Wilhelmshaven, Germany
* mario.luis.miranda.montenegro@unioldenburg.de
Received:
30
September
2015
Revised:
15
March
2016
FDOM is one of the most important carriers of anthropogenic compounds in natural waters. It can combine with environmental contaminants and polymers to form diverse chemical structures. To this end, here a microfluidic chip was designed for the analysis of these changes in fluorescent dissolved organic matter (FDOM) fingerprints due to thermal treatment and varying time intervals of exposure. Excitation Emission Matrix Spectroscopy (EEMS) approach was utilized to detect and identify the inherent compounds in sampled FDOM. Strong direct correlations were founded, Spearman rank correlation values (ρ = 0.85 at α = 0.1, n = 4) and linear correlation R2 = 0.8359 were noted between thermal treatment pattern 2 and fluorescence intensity of samples. Materials, acrylic based glue and cyclic olefin copolymer (COC) polymer, used to design the microfluidic sensor were determined to possess unique spectral features in the ultraviolet to green spectrum using EEMS. The study therefore provides an insight on methods to identify contaminants in natural waters. This underlines the potential of optical sensors providing measurements at fast intervals, enabling environmental monitoring.
Key words: Extraction / polymer / EEMs / plastic / fluorescent DOM / bio-optics / Suwannee river
© The Author(s) 2016. All rights reserved.
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