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Determination of trace rhodamine B by spectrofluorometry and magnetic solid phase extraction based on a 3D reduced graphene oxide composite

Abstract

Magnetic solid phase extraction coupled with spectrofluorometry was proposed to determine the presence of trace rhodamine B in chili powder and tap water. The characterization results showed that Fe3O4 covered the surface of the 3D reduced graphene oxide (3D-RGO) composite. The adsorption behaviour and adsorption capacity of the 3D-RGO composite were investigated. Several significant factors that affect the adsorption and desorption performance were optimized. The proposed method gave a wide linear range, from 0.025 to 150 μg L-1 with R2=0.9991; low limit of detection (3 Sb), and quantification (10 Sb) of 0.0074 μg L-1 and 0.025 μg L-1 (n=3), respectively. Furthermore, this method was successfully applied to determine the amount of rhodamine B in real samples, and the recoveries at three different spiked levels (0.03, 10, and 20 μg L-1) were in the range of 95.66-99.98%, with a relative standard deviation of less than 2.01% (n=3).

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Publication details

The article was received on 03 Jul 2017, accepted on 04 Sep 2017 and first published on 05 Sep 2017


Article type: Paper
DOI: 10.1039/C7AY01622K
Citation: Anal. Methods, 2017, Accepted Manuscript
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    Determination of trace rhodamine B by spectrofluorometry and magnetic solid phase extraction based on a 3D reduced graphene oxide composite

    J. Yan, J. Cen, X. Tan, S. Tan, Y. Wu, H. Zhang and Q. Wang, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY01622K

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