Determination of trace rhodamine B by spectrofluorometry and magnetic solid phase extraction based on a 3D reduced graphene oxide composite. Issue 37 (25th September 2017)

• Record Type: Journal Article
• Authors: Yan, Jun; Cen, Jian-Mei; Tan, Xue-Cai; Tan, Shao-Fen; Wu, Ye-Yu; Zhang, Hui; Wang, Qi
• Is Part Of: Analytical methods. Volume 9:Issue 37(2017)
• Page Start: 5433
• Page End: 5440
• Publication Date: 2017-09-25
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c7ay01622k
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : Sample pre-treatment by magnetic solid phase extraction based on a 3D reduced graphene oxide composite. Abstract : 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 Fe3 O4 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 R 2 = 0.9991, and low limits of detection (3 S b ) and quantification (10 S b ) 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).