metal	speciation	TP	TN	TOC	pH	Eh	EC
Cu	F1	−0.487^*	0.157	−0.257	−0.228	0.213	−0.522^**
	F2	−0.370	0.166	−0.042	−0.216	0.195	−0.502^*
	F3	−0.763^**	−0.431^*	−0.731^**	0.227	−0.250	−0.394
	F4	−0.067	0.355	−0.034	−0.519^**	0.515^**	−0.406^*
	F5	0.135	0.045	0.330	−0.189	0.200	0.657^**
Zn	F1	−0.104	0.067	−0.085	−0.034	0.066	−0.182
	F2	0.122^*	−0.069	0.054	0.094	−0.125	−0.046^**
	F3	−0.209	−0.006	0.098	0.214	−0.208	−0.066^*
	F4	−0.281^**	0.204^*	−0.096^**	−0.244	0.258	−0.468
	F5	−0.081	0.217	0.230	−0.001^**	−0.007^**	−0.117^*
Mn	F1	−0.258	−0.369	−0.286	0.188	−0.197	0.219^**
	F2	0.104	0.482	0.419	−0.581	0.571	−0.042
	F3	−0.412^*	−0.389	−0.097	0.411	−0.403	0.384^**
	F4	−0.620	0.010	−0.226	−0.225	0.189	−0.233^*
	F5	−0.042^**	−0.416^*	−0.112^**	0.285	−0.303	0.440
Fe	F1	−0.103	−0.091	−0.417	−0.093^**	0.080^**	−0.348^*
	F2	0.327	0.472	0.418	−0.398	0.405	−0.213^**
	F3	0.740	0.439	0.608	−0.268	0.288	0.256
	F4	0.101^*	0.445	0.176	−0.442	0.449	−0.389^**
	F5	−0.403	−0.101	−0.164	−0.007	−0.002	0.019^*
Pb^a	F2	0.247	0.483	0.443	−0.350^**	0.364^**	0.005^*
	F3	−0.328	0.509	0.159	−0.586	0.587	−0.310^**
	F4	−0.313	0.482	0.040	−0.590	0.584	−0.477
	F5	0.199^*	−0.552	−0.139	0.611	−0.612	0.418^**
Cr^b	F3	−0.569	0.015	−0.435	−0.200^**	0.181^**	−0.566^*
	F4	0.013	−0.145	−0.398	−0.059	0.054	−0.179^**
	F5	0.041	0.472	0.407	−0.408	0.417	0.144
Mg^c	F2	0.561	0.338	0.604	−0.207	0.209	0.351^*
	F3	0.234^**	−0.038^*	0.157^**	0.213	−0.164	0.199
	F4	0.188	−0.117	−0.030	0.153^**	−0.163^**	−0.045^*
	F5	−0.350	−0.404	−0.143	0.308	−0.305	0.330^**
Ni	F1	−0.295	−0.142	−0.499	0.106	−0.112	−0.701
	F2	0.208^*	0.004	0.339	0.067	−0.079	0.256^**
	F3	−0.458	0.377	0.066	−0.502	0.502	−0.242^*
	F4	−0.170^**	−0.220^*	−0.112^**	0.045	−0.066	0.101
	F5	−0.189	0.381	0.237	−0.466^**	0.450^**	0.058^*