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11.2 Hydro-chemical parameters of water quality
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11.2 Hydro-chemical parameters of water quality
Hydro-chemical parameters of water quality were determined for 21 posts. At every post, we registered 33 indicators, 10 of which were on heavy metals of suspended and dissolved forms. Characteristics of surface water quality (according to hydro-chemical parameters), related to the water taken from the Dnipro river, Prypyat river and their tributaries, are presented in the Tables 11.4…11.5.
Dnipro River
The upper part of Dnipro river (the posts 1 and 2, from the border with Russia to Orsha town inclusive) can be considered relatively clean. As to the main components, we did not register any cases when the permissible standards were exceeded. As to manganese, the exceeded permissible standards can be, probably, explained by natural factors; and as to copper, neither here nor at any other post of the Dnipro river, Prypyat river or their tributaries, we take this fact into account, so far as, in Belarus Republic, the current standards exceed the analogous ones of the European countries in 10…100 times. While entering Belarus Republic (the border with Russia), the water quality corresponds to the water quality measured for the Dnipro river down stream Orsha town; and as to some parameters (like ammonium nitrogen, СВАП, silicon and others), the figures were even worse, this fact can be regarded as an indirect evidence of insignificant impact of the concentrated pollution sources, produced on the Dnipro environment in this area.
The pollution content in surface waters of the Dnipro river rises going with the stream. Near Mohylyov town (the posts 3 and 4), apart from manganese and copper, we registered the exceeded standards on the ammonium nitrogen and nitrite nitrogen substances, phenols and oil products (the Table 11.4), which are surely related to the human activity; the same was registered on iron but the reason of this has a natural character. Such pollution contents do not change to Rechitza town, where discharges of local hydrolitic plant (together with the municipal discharges) make the parameter, related to the BOD-5, to exceed the standards too. At boundary posts of Dnipro river (Loeve and Komarin towns), the pollution level of surface waters lowers, the standards are exceeded only on copper and zinc, which happens down stream Loeve town.
Berezina River
For the studied period, the Berezina river can be considered moderately polluted. However, the Svisloch river, tributary of the Berezina river, is the most polluted river of all studied rivers of the Dnipro basin. The considerable pollution, produced by Minsk city, has caused an essential excess in the ammonium and nitrite nitrogen contents (over 10 times of the standards), as well as in the phosphates, the BOD, oil products, manganese, copper and zinc contents.
Sozh River
Surface waters of Sozh river and Iput river, its tributary, are moderately polluted. For the studied period, we registered excessive (to some extent) contents of nitrogen and heavy metals (manganese, copper, zinc, iron) and of the SURFACTANTS (Iput river).
Prypyat River
While entering Belarus Republic, the Prypyat water was characterized by excessive contents of phosphates. The iron excess, as everywhere, can be, probably, explained by natural factors. Down stream Pinsk town, we registered growing pollution by phosphates. Besides, the standards were exceeded as to the BOD-5 too. Going down streasm, the pollution level of Prypyat river slightly lowers, but the municipal and industrial discharges of Mozyr town raise it once more; and while leaving Belarus Republic (the post 17), the water was characterized by excessive contents of ammonium nitrogen, manganese, copper and iron.
Entering Belarus Republic, the right-bank tributaries of Prypyat river (Styr, Goryn, Stviga and Ubort) are already polluted by ammonium nitrogen (Stviga and Ubort rivers), phosphates (Styr and Goryn rivers), the СВАП (Goryn and Ubort rivers); this fact, most likely, relates to the pollution carried from agricultural territories of Ukraine.
Comparative analysis of the results, obtained by hydro-chemical research into the rivers of Dnipro basin, and the annual monitoring data, collected by Hydromet in 1999, shows that the data, got by the expedition, is representative especially if we take into account the hydromeorological conditions of the expedition period. Any parameter, measured by the expedition, does not exceed the maximum contents registered in 1999 at the stationary monitoring posts.
So, we can state that the parameters, for which we registered the figures exceeding the standards, were on contents of ammonium and nitrite nitrogen, phosphates, the СВАП, oil products, the BOD-5, manganese, zinc, iron and copper. This fact should be taken into account not only while improving the treatment facilities and methods, but developing the national and inter-state ecological monitoring net.
The data collected for bottom sediments are presented in the Tables 11.6 and 11.6a. They show that, for all posts of the Dnipro river without exception, contents of pesticides are not high and do not exceed the error limits of the method used. However, contents of metals (iron, manganese, chrome, zinc and other) are rather high, and this fact can cause secondary pollution of water objects in other seasons. Most of iron, manganese, aluminium, arsenic were detected in the bottom sediments taken from Sozh river, near the border with Russia; and most of lead, cadmium, mercury, copper, chrome were detected in the bottom sediments taken from Dnipro river, near the border with Russia. The bottom sediments taken from Dnipro river, near Mohylyov town, are characterized by high contents of zinc. As to heavy metals, the cleanest bottom sediments are those taken from tributaries of the Prupyat river.
The studied fish revealed high contents of pesticides (alpha-ВНС, gamma-ВНС (lindan), delta-ВНС, 4,4 DDE, 4,4 DDD, endrin) and some metals (iron, lead, aluminium, copper, chrome and zinc). We did not register presence of mercury.
Table 11.5 The Data of the Hydro-Chemical Research into Rivers of the Dnipro Basin
|
Post |
Dnipro river, border with Russia |
Dnipro river, down stream Orsha town |
Dnipro river, up stream Mohylyov town |
Dnipro river, down stream Mohylyov town |
Dnipro river, down stream Rechitza town |
Dnipro river, down stream Loeve town |
Dnipro river, down stream Komarin town |
Berezina river, down stream Svetlogorsk town |
Svisloch river, down stream Minsk city |
Sozh river, border with Russia |
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
|
pH |
7.99 |
8.06 |
8.06 |
8.07 |
8.14 |
8.16 |
8.16 |
8.14 |
7.80 |
8.22 |
|
Oxygen, mg/l |
9.28 |
9.60 |
9.70 |
9.53 |
9.65 |
9.1 |
8.92 |
9.78 |
6.54 |
10.18 |
|
Temperature |
9.1 |
10.2 |
10.06 |
11.4 |
12.6 |
10.3 |
10.4 |
12.9 |
15.4 |
8.7 |
|
Colouring, degree |
5 |
5 |
7 |
5 |
30 |
5 |
7 |
14 |
5 |
32 |
|
Transparence, cm |
22 |
22 |
24 |
26 |
22 |
23 |
24 |
27 |
15 |
30 |
|
Chlorides, mg/dm3 |
11.6 |
12.1 |
12.8 |
16.1 |
17.7 |
17.2 |
15.4 |
21.3 |
34.3 |
11.5 |
|
Sulphates, mg/dm3 |
18.2 |
18.0 |
19.3 |
20.1 |
25.6 |
25.9 |
22.2 |
26.7 |
32.2 |
11.9 |
|
Hydro- carbonates, mg/dm3 |
235.6 |
240.1 |
238.4 |
248.4 |
213.4 |
214.5 |
206.6 |
196.4 |
224.2 |
283.8 |
|
Magnesium, mg/dm3 |
14.8 |
15.6 |
15.8 |
15.9 |
13.4 |
14.3 |
13.1 |
13.7 |
15.7 |
19.1 |
|
Calcium, mg/dm3 |
60.7 |
61.7 |
61.9 |
61.9 |
54.7 |
57.1 |
56.3 |
50.9 |
56.5 |
57.3 |
|
Sodium, mg/dm3 |
8.8 |
9.1 |
9.2 |
13.9 |
13.3 |
12.0 |
10.8 |
14.6 |
25.0 |
6.2 |
|
Potassium, mg/dm3 |
1.5 |
1.7 |
1.7 |
2.2 |
2.3 |
2.4 |
2.3 |
2.9 |
8.9 |
1.5 |
|
Mineralization, mg/dm3 |
352 |
359.2 |
362.4 |
382.2 |
343.4 |
349.1 |
329.1 |
328.5 |
410.3 |
402.9 |
|
Silicon, mg/dm3 |
5.7 |
5.3 |
5.2 |
5.0 |
4.9 |
2.3 |
2.4 |
3.9 |
3.7 |
5.5 |
|
N-NH4 mg/dm3 |
0.24 |
0.175 |
0.71 |
0.78 |
0.65 |
0.27 |
0.27 |
0.27 |
4.59 |
0.72 |
|
N-NО2 mg/dm3 |
0.017 |
0.040 |
0.017 |
0.021 |
0.036 |
0.008 |
0.006 |
0.07 |
0.21 |
0.012 |
|
N-NО3 mg/dm3 |
0.108 |
0.125 |
0.53 |
0.60 |
0.45 |
1.20 |
0.47 |
0.33 |
1.57 |
0.015 |
|
Phosphates, mg/dm3 |
Н.о. |
Н.о. |
0.13 |
0.16 |
0.32 |
0.076 |
0.051 |
0.35 |
1.13 |
0.09* |
|
BOD5,mg О2/dm3 |
2.38 |
2.72 |
1.95 |
2.09 |
3.49 |
1.84 |
2.32 |
2.5 |
8.6 |
2.42 |
|
COD, mg О2/dm3 |
30.7 |
27.13 |
** |
** |
30.0 |
11.5 |
12.0 |
27.8 |
47.2 |
** |
|
СВАП, mg/dm3 |
0.076 |
0.046 |
Н.о. |
Н.о. |
0.038 |
0.010 |
0.07 |
0.14 |
0.10 |
Н.о. |
|
Phenols (gneral), mg/dm3 |
Н.о. |
Н.о. |
0.002* |
0.002* |
0.001 |
0.001 |
0.001 |
0.001 |
|
0.001* |
|
Oil products, mg/l |
0.02 |
0.025 |
0.01* |
0.01* |
0.03 |
0.03 |
0.01 |
0.02 |
0.39 |
Н.о. |
|
Metals, mg/l |
suspended and dissolved forms |
|||||||||
|
Iron 1.0 |
0.093- 0.04 |
0.005- 0.027 |
0.015- 0.64 |
0.01- 0.67 |
0.11- 0.63 |
0.063 0.170 |
0.020- 0.024 |
0.007- 0.028 |
0.31-0.10 |
0.016- 0.60 |
|
Manganese 0.2 |
0.029- 0.053 |
0.07- 0.103 |
Н.о.- 0.053 |
0.055 |
Н.о.- 0.0025 |
0.001- 0.0145 |
0.001- 0.002 |
0.006- 0.14 |
0.049- 0.077 |
Н.о.- 0.032 |
|
Lead 1.0 |
0.01- 0.026 |
0.02- 0.02 |
Н.о.- 0.001 |
Н.о.- 0.0013 |
0.0045- 0.009 |
Н.о. |
0.001- н.о. |
0.003 |
0.002- >0.001 |
Н.о.- 0.001 |
|
Aluminium |
Н.о. |
Н.о. |
Н.о. |
Н.о. |
0.02 0.04 |
0.045-0.099 |
0.020- 0.062 |
0.032- 0.068 |
0.233- 0.192 |
Н.о. |
|
Cadmium 0.1 |
0.001- 0.002 |
0.002- 0.003 |
Н.о.- 0.0007 |
Н.о.- 0.001 |
0.0001- 0.0002 |
Н.о. |
Н.о. |
0.0002 |
0.0001- 0.0001 |
Н.о. |
|
0.1 Mercury |
Н.о. |
Н.о. |
Н.о. |
Н.о. |
Н.о.- 0.0002 |
Н.о. |
Н.о.-0.0006 |
0.00005- 0.00085 |
0.00005- 0.0007 |
Н.о. |
|
Copper 1.0 |
0.006- 0.013 |
0.005- 0.013 |
Н.о.- 0.0056 |
Н.о.- 0.0059 |
Н.о. |
0.0025-0.0005 |
0.001- 0.001 |
0.0005- 0.0065 |
0.010- 0.002 |
Н.о.- 0.0073 |
|
Arsenic 0.1 |
Н.о. |
Н.о. |
Н.о.- 0.003 |
Н.о.- 0.004 |
Н.о. |
0.009- 0.0017 |
0.0008-0.0009 |
0.0001 0.0002 |
0.001- 0.001 |
Н.о. |
|
Chrome 1.0 |
0.005- 0.01 |
0.005- 0.01 |
Н.о.- 0.01 |
Н.о.- 0.013 |
Н.о. |
Н.о. |
Н.о. |
Н.о.- 0.0025 |
0.030- 0.006 |
Н.о. |
|
Zinc 0.05 |
0.005- 0.023 |
0.029- 0.048 |
0.002- 0.053 |
0.002- 0.059 |
Н.о. |
0.0042- 0.0053 |
0.019- 0.01 |
0.005 |
0.020- 0.035 |
0.0024-0.068 |
Table 11.5a The Data of the Hydro-Chemical Research into Rivers of the Dnipro Basin
|
Post |
Sozh river, down stream Homel town |
Iput river, border with Russia |
Prypyat river, up stream Pinsk town |
Prypyat river, down stream Pinsk town |
Prypyat river, up stream Mozyr town |
Prypyat river, down stream Mozyr town |
Prypyat river, border with Ukraine |
Styr river |
Goryn river |
Stviga river |
Ubort river |
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
|
pH |
8.09 |
7.83 |
7.70 |
7.44 |
8.20 |
8.30 |
8.45 |
7.57 |
8.24 |
7.44 |
7.68 |
|
Oxygen, mg/l |
9.30 |
9.2 |
9.09 |
8.42 |
10.0 |
9.96 |
10.82 |
7.54 |
9.44 |
8.06 |
8.66 |
|
Temperature |
11.0 |
9.6 |
13.1 |
12.2 |
12.4 |
12.7 |
11.7 |
12.4 |
14.5 |
13.8 |
12.1 |
|
Colouring, degree |
11 |
16 |
40 |
42 |
44 |
41 |
45 |
40 |
28 |
81 |
69 |
|
Transparence, cm |
30 |
29 |
22 |
21 |
16 |
15 |
19 |
30 |
12 |
19 |
15 |
|
Chlorides, mg/dm3 |
14.4 |
11.1 |
15.7 |
14.8 |
22.1 |
21.0 |
20.7 |
15.4 |
18.7 |
6.1 |
13.1 |
|
Sulphates, mg/dm3 |
17.4 |
14.5 |
25.6 |
26.1 |
27.7 |
27.2 |
25.9 |
27.2 |
31.9 |
13.5 |
22.2 |
|
Hydro- carbonates, mg/dm3 |
217.4 |
179 |
253.4 |
249.2 |
199.7 |
190.7 |
190.7 |
242.9 |
261.1 |
27.7 |
77.4 |
|
Mg, mg/dm3 |
12.3 |
8.0 |
7.8 |
7.4 |
9.2 |
7.8 |
7.8 |
8.4 |
12.6 |
1.1 |
4.6 |
|
Ca, mg/dm3 |
58.1 |
52.5 |
82.2 |
82.4 |
62.1 |
61.9 |
61.9 |
80.6 |
77.9 |
13.7 |
27.9 |
|
Na, mg/dm3 |
7.5 |
5.6 |
7.8 |
8.6 |
11.9 |
11.7 |
11.7 |
8.6 |
13.0 |
2.9 |
5.4 |
|
I, mg/dm3 |
2.3 |
2.2 |
1.9 |
2.0 |
2.4 |
2.4 |
2.4 |
2.4 |
4.7 |
0.7 |
1.7 |
|
Mineralization, mg/dm3 |
331.8 |
275.1 |
395.8 |
392.5 |
336.1 |
326.4 |
326.4 |
287.3 |
423.4 |
66.6 |
156.4 |
|
Si, mg/dm3 |
5.4 |
5.6 |
2.9 |
3.5 |
2.7 |
2.1 |
2.1 |
3.6 |
3.0 |
3.1 |
2.6 |
|
N-NH4, mg/dm3 |
0.24 |
0.42 |
0.30 |
0.35 |
0.14 |
0.12 |
0.42 |
0.29 |
0.33 |
0.69 |
0.68 |
|
N-NО2, mg/dm3 |
0.005 |
0.006 |
0.008 |
0.0012 |
0.0075 |
0.0075 |
0.005 |
0.005 |
0.005 |
0.007 |
0.008 |
|
N-NО3, mg/dm3 |
0.46 |
0.37 |
0.22 |
0.35 |
0.12 |
0.54 |
1.07 |
0.32 |
0.7 |
0.11 |
0.74 |
|
Phosphates, mg/dm3 |
0.055 |
0.056 |
0.22 |
0.27 |
0.048 |
0.057 |
0.032 |
0.21 |
* |
0.14 |
0.002 |
|
BOD-5, mg О2/dm3 |
2.32 |
2.24 |
2.3 |
3.3 |
1.62 |
1.77 |
2.16 |
1.8 |
1.9 |
2.1 |
1.28 |
|
COD, mg О2/dm3 |
34.75 |
21.0 |
21 |
35 |
24.5 |
27.2 |
25.5 |
18 |
15 |
20 |
14.5 |
|
СВАП, mg/dm3 |
0.06 |
0.20 |
0.064 |
0.082 |
0.02 |
0.09 |
0.09 |
0.06 |
0.14 |
0.10 |
0.25 |
|
Phenols (general), mg/dm3 |
0.001 |
0.001 |
Н.о. |
Н.о. |
0.001 |
0.001 |
0.001 |
Н.о. |
Н.о. |
Н.о. |
0.001 |
|
Oil products, mg/l |
0.018 |
0.055 |
0.01 |
0.03 |
0.05 |
0.07 |
0.02 |
0.03 |
0.01 |
0.01 |
(0.01 |
|
Metals, mg/l |
suspended and dissolved forms |
||||||||||
|
Fe |
0.013- 0.24 |
0.024 0.31 |
Н.о.- 0.45 |
Н.о.- 0.30 |
0.016-0.28 |
0.005-0.23 |
0.11-0.22 |
Н.о.- 0.47 |
Н.о.- 0.51 |
Н.о.- 2.30 |
0.49-0.50 |
|
Mn |
0.006- 0.10 |
0.038- 0.036 |
Н.о.- 0.0005 |
Н.о.- 0.0005 |
0.05-0.015 |
0.027-0.036 |
0.0005-0.0225 |
Н.о. |
Н.о.- 0.001 |
Н.о.- 0.0005 |
0.008-0.075 |
|
Pb |
0.001- 0.001 |
0.0015- 0.0025 |
Н.о.- 0.005 |
Н.о.- 0.0035 |
Н.о.-0.004 |
Н.о.-0.004 |
Н.о. |
Н.о.- 0.004 |
Н.о.- 0.003 |
Н.о.- 0.025 |
0.001-0.001 |
|
Al |
0.025- 0.03 |
0.001- 0.093 |
Н.о.- 0.018 |
Н.о.- 0.02 |
0.05-0.09 |
0.07-0.10 |
0.024-0.104 |
Н.о.- 0.017 |
Н.о. |
Н.о.- 0.013 |
0.048-0.14 |
|
Cd |
0.0001- 0.0001 |
Н.о.- 0.0015 |
Н.о. |
Н.о. |
Н.о. |
Н.о. |
Н.о. 0.0001 |
Н.о. |
Н.о. |
Н.о. |
0.00015-0.0003 |
|
Hg |
Н.о. |
Н.о.- 0.0004 |
- |
- |
/0.007 |
/0.006 |
/0.0004 |
- |
- |
- |
Н.о.- 0.00052 |
|
Cu |
0.002- 0.004 |
0.0035- 0.0045 |
Н.о.- 0.004 |
Н.о.- 0.0035 |
0.001-.002 |
Н.о. |
0.003-0.0015 |
Н.о.- 0.001 |
Н.о.- 0.002 |
Н.о.- 0.01 |
0.001-0.001 |
|
As |
Н.о. |
0.0008- 0.0017 |
Н.о. |
Н.о. |
/0.0005 |
/0.0009 |
0.0005-0.0016 |
Н.о. |
Н.о. |
Н.о. |
0.0003-0.0005 |
|
Cr |
Н.о.- 0.001 |
0.001- 0.001 |
Н.о.- 0.003 |
Н.о.- 0.001 |
/0.001 |
/0.0005 |
Н.о. |
Н.о.- 0.003 |
Н.о.- 0.002 |
Н.о.- 0.006 |
0.002-0.0035 |
|
Zn |
0.023- 0.028 |
0.003- 0.0045 |
Н.о. |
Н.о.- 0.006 |
Н.о. |
Н.о. |
0.013-0.019 |
Н.о. |
Н.о. |
Н.о. |
0.009-0.010 |
*- the data of the stationary monitoring posts of Hydromet;
**- the data are not presented, because they were not considered reliable.
Table 11.6 The Data of Testing the River Bottom Sediments Taken from the Dnipro Basin
|
Post |
Dnipro river, up stream Orsha town |
Dnipro river, up stream Mohylyov town |
Dnipro river, down stream Mohylyov town |
Sozh river, up stream Krichev town |
Iput river, down stream Dobrush town |
Sozh river, down stream Homel town |
Prypyat river, down stream Pinsk town |
Styr river |
|
Indices |
Мkg/kg |
|||||||
|
Аldrin |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
|
Alpha ВНС |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
|
Beta-ВНС |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
|
Delta-ВНС |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
|
Gamma-ВНС (lindan) |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
|
Chlordan |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
4,4- DDT |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
4,4- DDD |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
|
4,4- DDT |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
Dichophol |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
Dieldrin |
< 0.3 |
< 0.3 |
< 0.3 |
< 0.3 |
< 0.3 |
< 0.3 |
< 0.3 |
< 0.3 |
|
Endosulphan 1 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
Endosulphan П |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
|
Endosulphan sulphate |
< 9 |
< 9 |
< 9 |
< 9 |
< 9 |
< 9 |
< 9 |
< 9 |
|
Endrin |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
< 0.8 |
|
Endrin aldehyde |
< 3 |
< 3 |
< 3 |
< 3 |
< 3 |
< 3 |
< 3 |
< 3 |
|
Heptachlor |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
< 0.4 |
|
Heptachlorepoxid |
< 11 |
< 11 |
< 11 |
< 11 |
< 11 |
< 11 |
< 11 |
< 11 |
|
4.4- Methoxychlor |
< 27 |
< 27 |
< 27 |
< 27 |
< 27 |
< 27 |
< 27 |
< 27 |
|
Myrex |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
Stroban |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
|
Toxaphene |
< 32 |
< 32 |
< 32 |
< 32 |
< 32 |
< 32 |
< 32 |
< 32 |
|
The rest of the table 11.6 |
||||||||
|
Post |
Dnipro river, up stream Orsha town |
Dnipro river, up stream Mohylyov town |
Dnipro river, down stream Mohylyov town |
Sozh river, up stream Krichev town |
Iput river, down strean Dobrush town |
Sozh river, down stream Homel town |
Prypyat river, down stream Pinsk town |
Styr river |
|
Phenols (general), mg/dm3 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
|
Metals |
Мg/kg |
|||||||
|
Iron |
2690 |
6550 |
9450 |
18000 |
2355 |
851 |
3145 |
2325 |
|
Manganese |
1180 |
398.5 |
653 |
1280 |
71.4 |
27.8 |
45.9 |
35.3 |
|
Lead |
8.41 |
4.72 |
5.87 |
3.92 |
1.12 |
0.31 |
1.22 |
2.71 |
|
Aluminium |
92.25 |
26.10 |
32.55 |
5155 |
935 |
595 |
1865 |
12.6 |
|
Cadmium |
1.62 |
1.06 |
1.40 |
1.03 |
0.19 |
0.08 |
0.197 |
0.425 |
|
Mercury |
1.76 |
0.24 |
0.22 |
0.29 |
0.14 |
0.06 |
0.086 |
0.195 |
|
Arsenic | ||||||||