title: Determination of Rhodamine B in Food Samples by Fe3O4@ Ionic Liquids-β-Cyclodextrin Cross Linked Polymer Solid Phase Extraction Coupled with Fluorescence Spectrophotometry.
abstract: Fe3O4@Ionic liquids β-cyclodextrin polymer(Fe3O4@ mono-6- deoxy-6- (1-ethyl- imidazolium)-β-cyclodextrin iodide polymer, ILs-β-CDCP) was prepared. A novel method based on Fe3O4@ILs-β-CDCP solid phase extraction coupled with fluorescence spectrophotometry for Rhodamine B (RhB) determination, was investigated. Results were shown that RhB was adsorbed on Fe3O4@ILs-β-CDCP and eluted with sodium dodecyl sulfate (SDS) (1.0%) rapidly. Different parameters, such as pH, adsorption time and volume, eluent volume and time were studied. This method introduced linearity for RhB between 0.01-9.00 μg/mL-1, the limit of detection was 5.2 ng/mL-1, correlation coefficient (R) was >0.9987 and the relative standard deviation (RSD) was 3.1% (n = 3, c = 4.00 μg/mL). The mechanism of adsorption of RhB on Fe3O4@ILs-β-CDCP was studied through the FTIR analysis and the inclusion constant of Fe3O4@ILs-β-CDCP-RhB. This method was applied successfully for determination of RhB in real samples with satisfactory results.
authors.affiliation: College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225002, China.|Department of Family Sciences, Faculty of Education, University of Khartoum, Khartoum, Sudan.
authors.forename: Almojtaba AbdAlkhalig
authors.identifier: http://orcid.org/0000-0003-4106-9998
authors.initials: AA
authors.lastname: Ahmed Bakheet
authors.affiliation: College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225002, China. xszhu@yzu.edu.cn.
authors.forename: Xia Shi
authors.initials: XS
authors.lastname: Zhu
mesh_terms: D003432:Cross-Linking Reagents / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry*; D005504:Food Analysis / Q000379:methods*; D052578:Ionic Liquids / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012235:Rhodamines / Q000032:analysis* / Q000302:isolation & purification*; D052616:Solid Phase Extraction / Q000379:methods*; D013050:Spectrometry, Fluorescence; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D003432:Cross-Linking Reagents; D005290:Ferric Compounds; D052578:Ionic Liquids; D011108:Polymers; D012235:Rhodamines; D047392:beta-Cyclodextrins; C000499:ferric oxide; C029773:rhodamine B
keywords: Fe3O4@ Ionic liquids-β-cyclodextrin polymer; Fluorescence spectrophotometry; Magnetic solid- phase extraction; Rhodamine B