Dejavniki, ki vplivajo na prisotnost metil-živega srebra v vodnem stolpcu Sredozemskega morja

diplomska naloga

Aleksandra Aubreht (Author), Dušan Žagar (Mentor), Jože Panjan (Thesis defence commission member), Franci Steinman (Thesis defence commission member), Matjaž Četina (Co-mentor)

Abstract

Keywords

gradbeništvo;diplomska dela;UNI;VKI;metil-živo srebro;Sredozemsko morje;vodni stolpec;okoljski dejavniki;

Data

Language:	Slovenian
Year of publishing:	2013
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[A. Aubreht]
UDC:	504:546.49(043.2)
COBISS:	6220641
Views:	2534
Downloads:	735
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Parameters affecting the presence of methyl-mercury in the water column of the mediterranean sea
Secondary abstract:	The thesis presents parameters affecting the presence of methyl-mercury (MeHg) in the water column of the Mediterranean Sea. The area is polluted with mercury due to a wide variety of sources stemming from the cinnabar belt underlying the Mediterranean from Spain to Turkey, where the most of the world mercury stock can be found. Mercury is transported through the air and rivers into marine environment. Numerous parameters that affect the concentrations of methyl-mercury and the methylation in the water column (microbial activity, temperature, pH, organic matter, redox conditions, sulfide, and salinity) are still not clarified. These parameters are described in detail on the basis of available literature. Several analyses were performed on data obtained in the framework of the MERCYMS and MED-OCEANOR projects in order to investigate possible connections between environmental parameters, concentrations, and transformation coefficients of mercury in marine environment. Such a parameterisation and possible new reaction coefficients would represent a valuable tool in modelling of mercury methylation and demethylation in the water column. Correlation coefficients were extremely low in all performed analyses (< 0.5); therefore, it was not possible to establish any connections between the measured environmental parameters and the concentrations of methyl-mercury from the obtained trendlines. Seasonally averaged concentrations within different layers and parts of the Mediterranean Sea showed elevated concentrations of MeHg in the Adriatic Sea, and higher MeHg concentrations at the sea-bottom in the autumn, which is consistent with previously published research studies.
Secondary keywords:	graduation thesis;civil engineering;methyl-mercury;Mediterranean Sea;water column;environmental parameters;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XII, 73 str.
Keywords (UDC):	mathematics;natural sciences;naravoslovne vede;matematika;threats to the environment;ogrožanje okolja;mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;inorganic chemistry;anorganska kemija;
ID:	81022