Chemical and Biological Technologies in Agriculture

Table 4 Mössbauer spectra parameters for GC and GC–HA10 samples

From: Exploring the synergistic effects of goethite intercalated coal in the presence of humic acids for enhanced growth of Sinapis alba

Temperature, K			296 ± 3					77.7 ± 0.3
Sample	No.	Site	δ (δ_ext) *	ε {Δ = 2ε}	Γ_exp	H_ext	S	δ	(ε_ext) {Δ = 2ε}	Γ_exp	H_ext	S
Sample	No.	Site	mm s⁻¹			kOe	%	mm s⁻¹			kOe	%
GC	1	Fe_3-δO₄	(0.32 ± 0.01)	0.00 ± 0.01	0.57 ± 0.01	488.3 ± 0.6	43.0 ± 0.3	0.47 ± 0.01	(-0.02 ± 0.01)	0.40 ± 0.01	525 ± 1	85.5 ± 0.2
	1	Fe_3-δO₄	(0.56 ± 0.02)	0.00 ± 0.01	0.57 ± 0.01	452 ± 4	43.0 ± 0.3		(-0.02 ± 0.01)		525 ± 1
	2	GC	0.36 ± 0.01	− 0.13 ± 0.01	0.34 ± 0.01	372.3 ± 0.9	42.2 ± 0.3		(-0.10 ± 0.01)		497.2 ± 0.4
	3	Fe⁺²_Oh	1.05 ± 0.01	{2.26 ± 0.01}	0.62 ± 0.02		6.9 ± 0.2	1.32 ± 0.01	{2.26 ± 0.02}	0.49 ± 0.03		6.0 ± 0.3
	4	Fe⁺³_Oh	0.50 ± 0.01	{0.51 ± 0.01}	0.60 ± 0.02		8.0 ± 0.2	0.48 ± 0.02	{0.94 ± 0.04}	0.98 ± 0.07		8.5 ± 0.4
GC–HA10	1	Fe_3-δO₄	(0.32 ± 0.01)	0.00 ± 0.01	0.47 ± 0.01	496.1 ± 0.7	39.2 ± 0.3	0.47 ± 0.01	(− 0.01 ± 0.01)	0.40 ± 0.01	526 ± 1	87.3 ± 0.3
	1	Fe_3-δO₄	(0.41 ± 0.01)	0.00 ± 0.01	0.47 ± 0.01	440 ± 2	39.2 ± 0.3		(− 0.01 ± 0.01)		526 ± 1
	2	GC	0.36 ± 0.01	− 0.13 ± 0.01	0.33 ± 0.01	376.9 ± 0.6	43.1 ± 0.4		(− 0.10 ± 0.01)		498.1 ± 0.7
	3	Fe⁺²_Oh	0.95 ± 0.01	{2.39 ± 0.02}	0.89 ± 0.04		7.2 ± 0.3	1.32 ± 0.01	{2.34 ± 0.03}	0.41 ± 0.04		3.0 ± 0.3
	4	Fe⁺³_Oh	0.44 ± 0.01	{0.69 ± 0.01}	0.79 ± 0.03		10.5 ± 0.3	0.51 ± 0.02	{1.07 ± 0.05}	1.28 ± 0.09		9.7 ± 0.4

^* δ − isomeric shift, ε − quadrupole shift, {Δ = 2ε} − quadrupole splitting, Γ_exp − linewidth, H − hyperfine magnetic field, S − relative subspectrum area, (F_ext)—the value of the parameter F at the extremal point of the probability density function

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