The characterization of priority hazardous substances distribution at the level of abiotic compartments (water/sediment) of the Olt River basin, in the industrial platform area Ramnicu Valcea

This paper aims to evaluate pollution priority hazardous substances in the Olt river ecosystems induced by the industrial platform Ramnicu Valcea. There is generally insignificant soil pollution caused organochlorine substances (1,2 Dichloroethane, Trichloroethylene, 1,2,4 trichlorobenzene ether β,β'diclordiizopropilic, perchlorethylene) and heavy metals (nickel, cadmium, copper, zinc, lead). There was a significant pollution with copper in the point S7, point was situated at approx. 50 m east of Monomer plant, vicinity pool DA 602 (wastewater treatment). In general the water samples from the Olt river and the accumulation lakes on the Olt river not found pollution of a heavy metals, nickel, copper, cadmium, zinc and lead. The exception is the point P7 (Cremernari) in which nickel was within grade quality. For organochlorine substances analyzed in the sections isobserved that 1,2-dichloroethane, trichlorethylene and perchlorethylene took
values that are within the limits imposed by the Order no. 161/2006, and 1,2,4
trichlorobenzene and ether β, β 'diclordiizopropilic falls below the detection limit
of the method.
In sediment samples collected from the Olt River and the accumulation lakes on
the Olt river is found higher concentrations of nickel in the sections S1, S2, S3,
S6, all sections situated upstream of the platform, copper in sections S3 and
S6, , cadmium in section S7 (Cremenari), lead in sections S1, S3, S6, S9, zinc
in the sections S1 , S3, S6, S7, sections S1, S3, S6, situated upstream of the
platform.
Also observe that in all sections, 1,2 dichloroethane, trichlorethylene,
perchlorethylene, 1,2,4 trichlorobenzene and ether β, β 'diclordiizopropilic,
taking values below the detection limit of the method.
From the results it is observed accumulation of metals (nickel, copper, zinc and
lead) greater in the upstream industrial platform Ramnicu Valcea, downstream
sections from which one can deduce that pollution sources could be Ramnicu
industrial activities located in Valcea upper Olt.