A novel magnetic poly(aniline-naphthylamine)-based nanocomposite for micro solid phase extraction of rhodamine B

• Published in: Analytica chimica acta 2013-09, Vol.794, p.38-46
• Main Authors: Bagheri, Habib, Daliri, Rasoul, Roostaie, Ali
• Format: Article
• Language: English
• Subjects: 1-Naphthylamine - chemistry; Aniline Compounds - chemistry; Bulging; Desorption; Extraction; Fe3O4 nanoparticles; Fluorescence; Magnetic solid phase extraction; Magnetics; Molecular Structure; Nanocomposites; Nanocomposites - chemistry; Nanomaterials; Nanostructure; Poly(aniline-co-naphthylamine); Polymers - chemistry; Recovery; Rhodamine; Rhodamine B; Rhodamines - analysis; Rhodamines - chemistry; Solid Phase Extraction - methods; Solid phases; Sorbents; Spectrofluorimetry
• ISSN: 0003-2670; 1873-4324
• DOI: 10.1016/j.aca.2013.07.066

•A Fe3O4–aniline-naphthylamine nanocomposite was prepared via a simple route.•The magnetic nanocomposite was applied for isolation of RhB from water.•The nanocomposite applicability was compared with other pristine polymers.•The method was applied for the determination of RhB in different samples. 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 R2=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%.