Technical Reports Parts C,D - ICPDR
Technical Reports Parts C,D - ICPDR
Technical Reports Parts C,D - ICPDR
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46 Danube Pollution Reduction Programme – National Review, Ukraine<br />
Figure 4.16.<br />
Zn (2+) content in Danube water, Reni town<br />
250<br />
200<br />
150<br />
(<br />
100<br />
50<br />
1995<br />
1994<br />
0<br />
1994<br />
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec<br />
1995<br />
Mn (tot.) variation (1994-1997)<br />
30<br />
25<br />
20<br />
15<br />
Reni<br />
Vilkovo<br />
10<br />
Con 1993 1994 1995 1996 1997<br />
Year<br />
Figure 4.17.<br />
Variations of the heavy metals content in the major tributaries of the river Danube are much more<br />
significant, especially for zinc (65 - 132 mkg/L in Tisza, 0 - 92 mkg/L in Prut) and chromium (2,1 -<br />
39mkg/L for Tisza, 1,6 - 75,8 mkg/L for Uzh, 0 - 48 mkg/L for Prut). While there are not available<br />
data on copper concentrations in Tisza and Uzh, the data on copper content varies significantly in<br />
water of the river Prut nearby the city Chernivtsi. These elevated levels of the heavy metals<br />
(comparing to the existing standards) affect the water quality for recreation and fisheries uses.