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Volume 4
Trends in Green Chemistry
ISSN: 2471-9889
Page 76
JOINT EVENT
Environmental Chemistry 2018 &
Green Technologies 2018
September 20-22, 2018
September 20-22, 2018 Berlin, Germany
&
7
th
Edition of International Conference on
Green Energy, Green Engineering and Technology
8
th
International Conference on
Environmental Chemistry and Engineering
Spatial temporal characterization of the water quality of the Vixán lagoon (Northweastern Iberian
Peninsula)
Juliana Rodrigues Gadelha
and
X L Otero
Universidade do Porto, Portugal
T
he Vixán lagoon is a wetland of high environmental value located on the Galician coast, subject to high anthropogenic
pressure. Coastal lagoons show a complex dynamic, where important changes in water chemistry can occur at small
temporal and spatial scales, needs the monitoring and knowledge of the chemical processes that occur in them. Space-
time sampling campaigns were carried out in collected water samples to analyze: physical-chemical parameters; nutrients;
concentration of trace elements and microbiological analysis, in order to create an environmental characterization of Vixán
lagoon variations. It verified salinity seasonal variation and a higher electrical condutivity values. Although these values were
similar to seawater values, the Vixán lagoon is characterized by a brackish. Also it was detected high pH values due to the
increase of CO
2
consumption in the summer months. The O
2
concentrations also varied seasonally, due to the scarce renewal of
the surface lagoon waters and the increase of the photosynthetic activity caused by the waters eutrophication. DBO
5
and TOC
presented high values. In addition, NO
2
- and NO
3
- values were high, probably due to the agricultural fertilizers influence used
in the surrounding area. High concentrations of phosphates and spatio-temporal variations of sulphates were also detected.
Microbial quality is bad. According to these results, it can be affirmed that the anthropic activity is negative to the lagoon
conservation state.
Biography
Juliana Rodrigues Gadelha has completed her PhD on Marine Biology/Ecotoxicology in 2015, from Universidade de Aveiro. Currently, she is a Doctoral research
integrate at CIIMAR (Interdisciplinary Center of Marine and Environmental Research), working in an emblematic Project funded by Horizon 2020, called
INSEAFOOD: Innovation and valorization of seafood products: meeting local challenges and opportunities. She has published 13 papers in reputed journals and
participated on 13 projects, national and international, more than 40 conferences communications and published one book in 2007. On the last decade, she works
on environmental risk assessment and applications of biological concepts to biotechnology and environmental safety.
jrgadelha@ua.ptJuliana Rodrigues Gadelha et al., Trends in Green chem 2018, Volume 4
DOI: 10.21767/2471-9889-C2-012