title: A novel magnetic poly(aniline-naphthylamine)-based nanocomposite for micro solid phase extraction of rhodamine B.
abstract: A novel Fe3O4-poly(aniline-naphthylamine)-based nanocomposite was synthesized by chemical oxidative polymerization process as a magnetic sorbent for micro solid phase extraction. The scanning electron microscopy images of the synthesized nanocomposite revealed that the copolymer posses a porous structure with diameters less than 50nm. The extraction efficiency of this sorbent was examined by isolation of rhodamine B, a mutagenic and carcinogenic dye, from aquatic media in dispersion mode. Among different synthesized polymers, Fe3O4/poly(aniline-naphthylamine) nanocomposite showed a prominent efficiency. Parameters including the desorption solvent, amount of sorbent, desorption time, sample pH, ionic strength, extraction time and stirring rate were optimized. Under the optimum condition, a linear spiked calibration curve in the range of 0.35-5.00μgL(-1) with R(2)=0.9991 was obtained. The limits of detection (3Sb) and limits of quantification (10Sb) of the method were 0.10μgL(-1) and 0.35μgL(-1) (n=3), respectively. The relative standard deviation for water sample with 0.5μgL(-1) of RhB was 4.2% (n=5) and the absolute recovery was 92%. The method was applied for the determination of rhodamine B in dishwashing foam, dishwashing liquid, shampoo, pencil, matches tips and eye shadows samples and the relative recovery percentage were in the range of 94-99%.
authors: Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran. bagheri@sharif.edu
authors: Habib
authors: H
authors: Bagheri
authors: Rasoul
authors: R
authors: Daliri
authors: Ali
authors: A
authors: Roostaie
mesh_terms: D015057:1-Naphthylamine / Q000737:chemistry; D000814:Aniline Compounds / Q000737:chemistry; D005453:Fluorescence; D008280:Magnetics; D015394:Molecular Structure; D053761:Nanocomposites / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012235:Rhodamines / Q000032:analysis* / Q000737:chemistry; D052616:Solid Phase Extraction / Q000379:methods*
chemical_list: D000814:Aniline Compounds; D011108:Polymers; D012235:Rhodamines; D015057:1-Naphthylamine; C029773:rhodamine B; C023650:aniline
keywords: Fe(3)O(4) nanoparticles; Magnetic solid phase extraction; Poly(aniline-co-naphthylamine); Rhodamine B; Spectrofluorimetry