TABLE 2.

Analytical data for the water sampled in the Rio Naracauli and tributaries

Sample	Distance (m)	Temp (°C)	pH	Eh (mV)	Cond.a (μS cm−1)	TDS (mg liter−1)	Concn of indicated element or compound
							Major (mg liter−1)								Trace (μg liter−1)
							Na	K	Mg	Ca	Zn	Cl	SO42−	HCO3−	Cd	Pb	Cu	Ni	Co
1	0	17	6.4	491	1,602	1,429	53	6.4	25	91	348	84	794	29	3,280	1,060	31	170	6
2	200	17	6.4	516	1,435	1,189	55	7.5	29	99	218	93	662	27	2,150	695	14	123	7
3	300	17	7.1	451	2,020	1,536	71	8.6	93	246	58	110	834	215	495	270	15	180	3
4	620	20	7.7	449	1,910	1,495	72	8.8	93	244	29	110	860	139	420	60	5	140	2
A	621	16	6.6	379	570	320	59	3.0	13	33	2	96	39	109	17	4	n.d.b	4	n.d.
5	630	16	7.2	435	1,240	836	71	5.9	46	119	24	110	368	152	245	88	5	41	1
6	900	18	7.6	454	1,743	1,321	78	8.0	75	193	28	123	725	154	410	160	7	61	1
7	1,300	17	7.8	451	1,734	1,291	79	7.8	76	191	15	121	716	147	360	71	4	48	1
B	1,350	18	8.3	428	878	486	60	3.8	31	67	2	95	159	139	15	190	15	42	7
8	1,600	18	8.3	413	897	578	67	4.1	32	76	2	88	191	190	45	18	2	13	1

^aCond., conductivity. 

^bn.d., not determined.