Preliminary Investigation concerning Metals Bioavailability in Waters of Aries River Catchment by Using the Diffusive Gradients in Thin Films Technique
Table 2
Concentrations of DGT-labile and total dissolved and total metal concentrations (μg L−1, mean ± standard deviation, parallel determinations).
Sample
P1
P2
P3
P4
P5
P6
P7
P8
Zn
DGT*
250 ± 20
239 ± 19
33.5 ± 3.1
299 ± 31
29.0 ± 2.3
33.0 ± 3.3
201 ± 18
24.0 ± 2.2
tot dis*
367 ± 11
364 ± 14
51.4 ± 1.8
416 ± 12
67.5 ± 4.1
46.3 ± 1.2
326 ± 12
38.2 ± 1.3
total*
2200 ± 90
2180 ± 81
461 ± 22
3550 ± 95
279 ± 12
383 ± 19
2320 ± 78
238 ± 10
Fe
DGT
225 ± 21
236 ± 18
93.0 ± 8.0
620 ± 28
55.1 ± 4.2
53.0 ± 4.4
203 ± 20
82.1 ± 8.1
tot dis
265 ± 4.2
288 ± 5.3
124 ± 3.3
811 ± 20
75.0 ± 2.0
69.2 ± 1.4
250 ± 3.3
99.0 ± 2.0
total
1020 ± 31
935 ± 28
340 ± 12
2220 ± 44
225 ± 11
280 ± 11
690 ± 18
301 ± 13
Cu
DGT
26.2 ± 2.2
19.0 ± 2.0
7.5 ± 0.8
466 ± 51
8.7 ± 1.0
11.2 ± 1.1
134 ± 12
10.1 ± 1.0
tot dis
94.1 ± 5.0
22.1 ± 0.3
11.0 ± 0.4
850 ± 40
9.8 ± 0.2
14.1 ± 0.3
226 ± 8.2
14.0 ± 0.4
total
182 ± 4.3
123 ± 5.1
34.0 ± 2.0
2010 ± 62
42.0 ± 2.1
36.0 ± 2.0
340 ± 8.6
55.1 ± 3.3
Mn
DGT
178 ± 18
99.0 ± 8.6
32.3 ± 20
566 ± 20
38.2 ± 3.3
32.1 ± 3.2
326 ± 28
40.2 ± 3.9
tot dis
306 ± 13
232 ± 13
46.0 ± 1.4
2080 ± 88
60.2 ± 2.4
98.0 ± 5.8
590 ± 23
88.0 ± 4.4
total
1220 ± 45
936 ± 42
350 ± 12
5350 ± 96
316 ± 12
456 ± 24
3300 ± 88
415 ± 17
*DGT: DGT-labile concentrations; tot dis: total dissolved (filtered by 0.45 m filters); total: total metal concentration in unfiltered samples.
