Portal de Periódicos da CAPES

ANALYTICAL CHARACTERIZATION OF THE BLACK SEA COAST LAKES

2002; Polytechnic Institute of Iasi; Volume: 1; Issue: 2 Linguagem: Inglês

10.30638/eemj.2002.019

1843-3707

Elisabeta Chirila, Stoica Godeanu, Marioara Godeanu, Liviu-Daniel Galaţchi, Petre Capota,

Marine and environmental studies

This work presents original results concerning analytical characterization of some surface waters by applying modern methods.The studied lakes (Istria, Nuntaşi, Corbu, Taşaul, Siutghiol, Tăbăcărie, Agigea, Belona, Techirghiol, Tatlageac, Neptun 1, Neptun 2, Limanu and Comorova) are located in the central and southern part of the Romanian Black Sea coast and represent ecosystems contaminated by the anthropic influences.Concentrations of 15 macro and microelements: Al, B, Cd, Cr, Cu, Fe, Mn, Mo, Ni, P, Pb, Sb, Ti, Zn and Zr, were determined by inductively coupled plasma -atomic emission spectrometry (ICP-AES) technique.Concentration of element in the analyzed lake water ranged as follows: Al 41.1 -3025, B 225 ->7000, Cd <0.1 -6.6, Cr 0.7 -49.4,Cu <0.1 -107.9,Fe 22.3 -2759, Mn 10.5 -174.9,Mo <0.1 -13.9, Ni <0.3 -20, P 42.2 -589.7,Pb 5.4 -230, Sb <0.3 -32.6, Ti <0.1 -122.7,Zn <1.0 -118.0 and Zr < 2.0 -210µg/L.Determined concentrations for Cadmium and Copper have in some lake water higher values than the accepted limits of the Romanian standard (3 respectively 50 µg/L).Zn concentration of eight lakes is higher than 30µg/L (the accepted limit) and Pb concentration is higher than 50 µg/L (the accepted limit) in almost all analyzed lake waters, except three of them: Comorova, Corbu and Nuntaşi.It was also determined the organic dissolved substances as COD-Cr by the molecular absorption spectrometry in visible and as COD-Mn by titrimetric method.Obtained quantitative results of the above-mentioned parameter show those ecological restoration efforts are necessary.