Table 1: Results of measured initial and final concentrations in water samples (x±s.e) compared to nominal concentrations.
|
Metals names |
Nominal concentrations (µg/L) |
Chemical-analytical concentrations |
|
|
Cinitial (µg/L) |
Cfinal (µg/L) |
||
|
Cu |
3 |
3.33±0.09 |
3.60±0.06 |
|
7.5 |
7.63±0.29 |
8.33±0.09 |
|
|
20 |
20.17±1.27 |
21.10±0.93 |
|
|
50 |
50.07±0.77 |
55.43±1.43 |
|
|
120 |
130.70±2.19 |
136.96±3.80 |
|
|
240 |
274.13±3.62 |
272.03±5.24 |
|
|
300 |
314.37±4.21 |
328.03±5.43 |
|
|
Pb |
100 |
96.33±3.84 |
105.33±5.70 |
|
125 |
124.00±6.93 |
125.33±3.48 |
|
|
200 |
197.67±7.51 |
204.67±4.06 |
|
|
400 |
394.33±14.50 |
428.67±2.33 |
|
|
800 |
917.67±18.53 |
886.00±26.08 |
|
|
1600 |
1761.67±41.60 |
1839.67±44.60 |
|
|
2500 |
2759.00±52.85 |
2674.67±74.98 |
|
|
Cd |
12.5 |
14.27±0.71 |
14.37±0.44 |
|
25 |
21.90±0.1 |
26.37±3.34 |
|
|
50 |
58.10±1.97 |
55.00±4.50 |
|
|
75 |
87.93±2.22 |
72.03±1.83 |
|
|
100 |
104.70±4.41 |
120.10±1.90 |
|
|
150 |
171.43±2.37 |
156.73±2.70 |
|
|
300 |
301.07±7.90 |
330.97±9.44 |
|
Exposure period was 48 h; the values are the mean of four replicates; standard error in parentheses.