Table 1. Results of Electron Diffraction Spectroscopy (EDS) and Atomic Absorption Spectroscopy (AAS) Elemental Analysis of ZGO/Cr and ZGO/Cr–SiC NPs.

	at. % (SEM–EDS)		at. % (TEM–EDS)
element	ZGO/Cr	ZGO/Cr–SiC	ZGO/Cr	ZGO/Cr–SiC
Zn	9.7	6.5	21.6	9.9
Ga	16.7	14.3	24.2	19.0
O	60.3	43	53.4	70.2
Si	10.5	15.1	0.6	0.8
C		21.3
Cr			0.09	0.08

	AAS concentration (μg/mg)
	ZGO/Cr	ZGO:Cr–SiC
Cr (×10–6 mol/L)	0.189	0.195
Cr (×10–7 mol/L)	0.001	0.100