Assessment of Physical-Chemical Characteristics of Surface Water from Key Sites of the Mesta River: State and Environmental Implications

Euroinvent ICIR 2018

Georgieva, S.^1 ; Gartsiyanova, K.^2 ; Ivanova, V.^1 ; Vladimirova, L.^1

University of Chemical Technology and Metallurgy, Department of Analytical Chemistry, bul. Kliment Ohridski 8, Sofia, Bulgaria^1

National Institute of Geophysics, Geodesy and Geography, Department of Geography, Bulgarian Academy of Sciences (NIGGG-BAS), str. "Acad. G. Bonchev", bl.3, Sofia

1113, Bulgaria^2

关键词: Anthropogenic sources;    Chemical characteristic;    Chemical characterization;    Electrical conductivity;    Environmental implications;    Environmental standards;    Framework directives;    Monitoring programs;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/374/1/012093/pdf
DOI  :  10.1088/1757-899X/374/1/012093

来源: IOP

【 摘 要 】

The anthropogenic source pollution of the Mesta River was assessed during the period 2011 and 2016 in terms of pH, conductivity, chemical oxygen demand (COD), anions and heavy metals in key sites of the Mesta river pointed as: S1 (the Mesta river before the Iztok river); S2 (the Iztok river before the Mesta river); S3 - the river Mesta after the Iztok river); S4 - the river Mesta at Momina Klisura, near Bukovo) and S5 - the river Mesta before the Greece border, after the Matnitsa river. The application of multivariate clustur analysis (CA) for the interpretation of a large and complex data matrix obtained during a monitoring program of surface water in Mesta river is presented in this study. The dataset consists of analytical results from a 6-yrs survey conducted in selected points of the river system. The physical-chemical characterization in the water samples were made in accordance with the Directive 2000/60/EU-Water Framework Directive (WFD) and its equivalent criteria transposed into the Water Law (WL) in Bulgaria. In water, concentrations (mg L-1) during 2016 of NO2-(0.006 to 0.052), NO3-(0.01 to 1.33) and total contents in μg L-1of Cu (-1) were agreed with environmental standards except cadmium Cd (>0.15 μg L-1) and PO43-(0.15 mg L-1). During analyzed period the cadmium concentration was much higher than recommended limit only. In this sense, it was possible to demonstrate relatively good quality of river water even with numbers of industrial and touristic activities in the analyzed area but also to consider a future concept on cadmium sources and their eliminated.