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

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

Analytica chimica acta (2013-08-27)
Habib Bagheri, Rasoul Daliri, Ali Roostaie
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%.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Aniline-4-13C, 99 atom % 13C
Pricing and availability is not currently available.
Supelco
Rhodamine B, analytical standard
Pricing and availability is not currently available.
Sigma-Aldrich
Aniline, ACS reagent, ≥99.5%
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Sigma-Aldrich
Aniline, ReagentPlus®, 99%
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Aniline-15N, 98 atom % 15N
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Aniline, JIS special grade, ≥99.0%
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Sigma-Aldrich
Aniline, SAJ first grade, ≥99.0%
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1-Naphthylamine, 97%
Pricing and availability is not currently available.
Sigma-Aldrich
Rhodamine B, ≥95% (HPLC)
Pricing and availability is not currently available.
Sigma-Aldrich
Rhodamine B, for fluorescence
Pricing and availability is not currently available.
Supelco
Rhodamine B solution, 0.2% in isopropanol, for TLC derivatization
Pricing and availability is not currently available.
Supelco
1-Naphthylamine, analytical standard
Pricing and availability is not currently available.
Supelco
Aniline, analytical standard
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Millipore
Nitrate Reagent A, suitable for microbiology
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Sigma-Aldrich
Aniline hydrochloride, ≥99%
Pricing and availability is not currently available.
Sigma-Aldrich
Aniline-1-13C, 99 atom % 13C
Pricing and availability is not currently available.
Supelco
Aniline solution, certified reference material, 5000 μg/mL in methanol
Pricing and availability is not currently available.