Abstract
In this research nanostructural poly (o-aminophenol) was synthesized by electropolymerization and used for solid phase microextraction procedure (SPME). Thin film of Poly (o-aminophenol) (4 µm thickness) was shaped by sweep potential for 45 min on the surface of stainless steel wire. Polymer was synthesized by potentiostat procedure too. Prepared polymer by sweep potential procedure showed nanostructures on the surface. Acetic anhydride was employed for derivatization of bisphenol A (BPh-A) and analysis of acetylated BPh-A was utilized by gas chromatography-flame ionization detector (GC-FID). Affecting parameters on derivatization and extraction such as amount of acetic anhydride, stirring rate, temperature, ionic strength and extraction time were optimized. The limit of detection (LOD) and relative standard divisions (RSDs%) were achieved 0.6 µgL-1 and less than 6.8%, respectively under optimized conditions. Finally proposed method was used for extraction of bisphenol A from leaching of baby and drinking water bottles. Relative recovery was achieved 98% for leaching from drinking bottle. In leaching from plastic baby bottle, bisphenol A (BPh-A) was detected in the range 5–15 µg L-1.
Highlights
Solid phase microextraction (SPME) is a simple, solvent free and green sample preparation technique which includes the employing of a small amount of polymeric sorbent coated on a thin fiber for extraction [1]
POAP coating prepared by sweep potential showed granular structures which were contained the large number of nanoparticles (o.d. 50 nm or smaller) attached to each other (Fig. 1a and b)
The rate of polymerization increased considerably in the presence of Sodium dodecyl sulfate (SDS) [37] on the other hands dodecyl sulfate has been used as a frequent counter ion in conductive polymer preparation that used for microextraction process because it increases thermal stability of polymeric film [38]
Summary
Solid phase microextraction (SPME) is a simple, solvent free and green sample preparation technique which includes the employing of a small amount of polymeric sorbent coated on a thin fiber for extraction [1]. The important disadvantages of commercial SPME fibers are high cost, frangibility of the fibers and weakness of sorbents for extraction of polar compounds. For domination of these drawbacks, Cadmium determination based on ISMP sensor. (o-aminophenol) (POAP) has been an interesting polymer during three past decades. Many of researches have been performed about its synthesis, structure and application in sensor, biosensor and corrosion protection [6].
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