• 文献标题:   Determination of trace rhodamine B by spectrofluorometry and magnetic solid phase extraction based on a 3D reduced graphene oxide composite
  • 文献类型:   Article
  • 作  者:   YAN J, CEN JM, TAN XC, TAN SF, WU YY, ZHANG H, WANG Q
  • 作者关键词:  
  • 出版物名称:   ANALYTICAL METHODS
  • ISSN:   1759-9660 EI 1759-9679
  • 通讯作者地址:   Guangxi Univ Nationalities
  • 被引频次:   4
  • DOI:   10.1039/c7ay01622k
  • 出版年:   2017

▎ 摘  要

Magnetic solid phase extraction based on a 3D reduced graphene oxide composite 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 mu g L-1 with R-2 = 0.9991, and low limits of detection (3S(b)) and quantification (10S(b)) of 0.0074 mu g L-1 and 0.025 mu g 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 mu g L-1) were in the range of 95.66-99.98%, with a relative standard deviation of less than 2.01% (n=3).