A Sensitive Resonance Rayleigh Scattering Method for Na⁺ Based on Graphene Oxide Nanoribbon Catalysis

Table 2

Analytical results of Na⁺ in samples.

Sample	Detection (ng/L)	Average (ng/L)	Added (ng/L)	Found (ng/L)	Recovery (%)	RSD (%)	Content (mg/L)	AAS (mg/L)
Sample1	205.9, 198.6, 185.9, 211.3, 222.6	204.9	367.6	558.6	97.6	6.7	2.1	2.0
Sample2	156.9, 157.3, 144.2, 152.1, 148.6	151.8	367.6	510.2	98.2	3.6	1.5	1.6
Sample3	101.3, 99.7, 102.5, 106.9, 98.1	101.7	367.6	453.1	96.5	3.3	1.8	1.9