Preparation of a new coating of graphene oxide/nickel complex on a nickelized metal surface for direct immersion solid phase microextraction of some polycyclic aromatic hydrocarbons

Table 1 Analytical figures of merit of the developed method utilizing the Alu-Ni/GO/NiTAM-SPME fiber (n = 5)

Compounds	Analytical figures
	LR^a (µg L^–1)	Slope ± Un^b	R^2c	LOD^d (µg L^–1)	LOQ^e (µg L^–1)	RSD^f (%) (at the concentration of 1 µg L^–1)				RSD (%) (at the concentration of 25 µg L^–1)				EF^g ± RSD
	LR^a (µg L^–1)	Slope ± Un^b	R^2c	LOD^d (µg L^–1)	LOQ^e (µg L^–1)	Intra-day	Inter-day	After 1 month	Single fiber	Intra-day	Inter-day	After 1 month	Single fiber	EF^g ± RSD
Naphthalene	0.50‒25.00	1218.60 ± 0.15	0.9913	0.15	0.50	2.21	3.75	0.51	3.58	0.32	1.80	0.17	2.21	83 ± 3
Acenapthene	0.50‒100.00	1495.20 ± 0.11	0.9938	0.05	0.16	2.44	5.95	0.39	5.51	0.53	3.10	0.26	3.30	124 ± 2
Fluorene	0.10‒200.00	2813.50 ± 0.09	0.9925	0.20	0.66	3.00	6.12	3.06	8.70	1.18	4.05	2.40	4.39	97 ± 7
Phenanthrene	0.10‒150.00	2277.90 ± 0.08	0.9933	0.03	0.10	4.82	5.91	4.13	6.05	1.96	2.38	1.62	3.05	104 ± 5
Anthracene	0.10‒200.00	4724.90 ± 0.05	0.9915	0.03	0.10	2.61	4.00	1.59	4.83	0.84	1.20	0.33	2.78	94 ± 2
Fluranthene	0.50‒200.00	1537.60 ± 0.09	0.9919	0.15	0.50	3.20	4.38	3.04	4.22	1.31	2.87	1.16	1.42	118 ± 3
Pyrene	1.00‒200.00	1812.60 ± 0.01	0.9912	0.30	1.00	4.35	7.29	2.98	6.48	2.94	4.09	2.13	3.90	164 ± 7
Chrysene	0.50‒150.00	2069.30 ± 0.06	0.9920	0.07	0.23	1.42	6.11	5.30	7.49	0.98	3.62	2.93	3.71	135 ± 4

ISSN: 2661-801X