Preliminary Investigation concerning Metals Bioavailability in Waters of Aries River Catchment by Using the Diffusive Gradients in Thin Films Technique

Table 1

Physical-chemical characteristics of waters sampled from Aries River catchment (mean ± standard deviation, parallel determinations).

Sample	Description	pH	EC	DOC	Nt	Cl^−
		pH unit	S cm^−1	Mg L^−1
P1	Foies stream, tributary of Abrud	4.10 ± 0.05	2290 ± 44	4.00 ± 0.26	2.33 ± 0.15	16.2 ± 0.82	1.45 ± 0.12	0.24 ± 0.09	260 ± 14	2.20 ± 0.12
P2	Abrud rivulet tributary of Aries	4.23 ± 0.06	1160 ± 28	5.80 ± 0.38	2.27 ± 0.12	16.3 ± 0.88	1.48 ± 0.10	0.19 ± 0.08	273 ± 19	2.30 ± 0.14
P3	Aries after confluence with Abrud	7.61 ± 0.08	237 ± 10	3.44 ± 0.20	0.36 ± 0.04	3.75 ± 0.26	0.86 ± 0.08	0.04 ± 0.02	30.4 ± 2.8	0.12 ± 0.02
P4	Sesei rivulet, tributary of Aries	4.54 ± 0.05	1310 ± 24	2.73 ± 0.21	0.55 ± 0.05	14.2 ± 0.95	2.05 ± 0.16	<0.01	1690 ± 60	0.14 ± 0.02
P5	Aries before confluence with Sesei	7.99 ± 0.08	234 ± 11	1.85 ± 0.16	0.21 ± 0.02	2.63 ± 0.18	0.69 ± 0.05	0.01 ± 0.005	22.6 ± 2.1	<0.02
P6	Aries after confluence with Sesei	7.70 ± 0.08	347 ± 14	2.22 ± 0.15	0.23 ± 0.02	3.89 ± 0.28	0.91 ± 0.08	0.02 ± 0.01	105 ± 10	<0.02
P7	Mine water, Baia de Aries	5.63 ± 0.06	2440 ± 52	2.30 ± 0.20	0.59 ± 0.06	2.95 ± 0.31	0.62 ± 0.05	<0.01	1400 ± 50	0.50 ± 0.04
P8	Aries after confluence with mine water	8.25 ± 0.08	361 ± 12	1.52 ± 0.12	0.20 ± 0.02	3.35 ± 0.32	0.85 ± 0.09	0.02 ± 0.01	90.8 ± 8.8	<0.02
Median		6.62	760	2.52	0.46	3.82	0.88	0.018	182	0.13
Min.		4.10	234	1.52	0.20	2.63	0.62	<0.01	22.6	<0.02
Max.		8.25	2440	5.80	2.33	16.3	2.05	0.24	1690	2.30
CV %		28.9	87.2	46.9	108	80.8	44.5	144	138	152