Table 3.

Relative abundance of Cu species present in the different soils fractions after 55 days as determined from LCF analysis of the first derivative of the Cu kα XANES data (− 20 to 30 eV above the edge).

Samplea	Cu2O	±	CuO	±	Cu	±	Cu-Ferrb	±	CuCl2aq	±	Cu-Orgcd	±	Red Chi2d
	%		%		%		%		%		%
CA NT	13	2	56	4	7	2					24	3	4.7 ∗ 10− 5
CA NS	8	1	71	2	5	1			16	1	0	0	2.8 ∗ 10− 5
DE NT	8	2	51	5	4	2	11	3			26	3	6.6 ∗ 10− 5
DE NS	6	1	61	2			12	2	21	2	0	0	3.6 ∗ 10− 5
OH NS	4	1	62	3			9	3	25	3	0	0	6.9 ∗ 10− 5
LA NT	5	1	67	1	4	1					23	2	1.7 ∗ 10− 5
LA NS			39	3			28	3			34	9	5.5 ∗ 10− 5
LA NB			49	2			25	2			26	2	3.7 ∗ 10− 5
MS NT	4	1	66	3							29	5	5.7 ∗ 10− 5
PA NT			48	4			16	2			35	5	2.6 ∗ 10− 5
NY NT	6	2	63	4							32	7	4.8 ∗ 10− 4
NY NS			48	2			20	1			31	4	2.6 ∗ 10− 5
AZ NT	5	1	65	3							30	6	2.8 ∗ 10− 5
AZ NS	5	1	61	3	4	1					30	5	1.8 ∗ 10− 5
AZ NB	5	1	60	2	6	1					29	3	2.3 ∗ 10− 5
MA NT			55	2			13	1			32	3	1.7 ∗ 10− 5
MA NS			34	2			28	1			38	5	1.9 ∗ 10− 5
MA NB			23	5			33	3			44	8	1.2 ∗ 10− 4
ND NT	9	1	58	3	5	2					28	2	4.7 ∗ 10− 5
ND NS	1	1	71	3							28	5	3.3 ∗ 10− 5
ND NB	10	2	66	3							24	4	8.1 ∗ 10− 5
NY(1) NT	5	1	60	3							35	5	2.2 ∗ 10− 5
NY(1) NB	4	2	47	3			21	3			28	8	9.0 ∗ 10− 5
MD NT	5	1	64	3							32	4	2.5 ∗ 10− 5
MD NS			46	2			22	1			32	3	1.3 ∗ 10− 5
MD NB			22	4			36	2			42	5	3.3 ∗ 10− 5

^aResults of the LCF data are presented only for samples where the concentration of Cu in the soil was great enough to obtain useable XANES data for LCF analysis of the first derivative of the normalized data; state locations are abbreviated as listed in Table 1 with Cu NP treated top (NT), side (NS) or bottom (NB) samples.

^bCu-Ferr refers to Cu adsorbed onto ferrihydrite.

^cCu-Org refers to the summation of the Cu organic complexes used in the LCF fit. Individual complexes included LCF fit included Cu-Acetate, Cu-Citrate, and Cu EDTA.

^dRed Chi² refers to the reduced chi square value reported in the Iffefit software package as a goodness of fit parameter.