e-journal

Ionic liquid-based hollow fiber-supported liquidphase microextraction enhanced electrically for the determination of neutral red

---

A method of ionic liquid-based hollow fiber liquid-phase microextraction enhanced electrically was successfully developed and applied to the extraction and determination of neutral red (NR) dye, which was selected as the model analyte. A room temperature ionic liquid, 1-octyl-3-methylimidazolium hexafluorophosphate ([C8mim][PF6]), was placed in the pores of a polytetrafluoethylene hollow fiber, which acts as a liquid membrane and the acceptor solution. The extraction parameters affecting the enrichment factor of NR, such as pH, extraction time, elution time, stirring rate, and the voltage were optimized. In addition, UVeVisible (UVeVis) or electrochemiluminescence spectra were also determined. The extraction rate and capacity of NR could be improved significantly by cathodic polarization.
Under the optimized extraction conditions (organic liquid microextraction phase [C8mim][PF6], pH 7, stirring rate 300 rpm, extraction time 20 minutes, ultrasonicassisted elution time 3 minutes, voltage
70 V), the detection limit of 0.38 mg/L and linear correlation coefficient of r > 0.99 were obtained. The established method was successfully applied to the analysis of three soft drink samples, which were spiked with NR standards at the concentrations of 0.1, 1.0, and 5.0 mg/L, and satisfactory results were obtained.

Keywords: Electrochemiluminescence Hollow fiber Ionic liquid Liquid-phase microextraction Neutral red

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

j o u rnal of food and drug a n a l y s i s

No. Panggil

-

Penerbit

: Elsevier Taiwan., 2014

Deskripsi Fisik

j o u rnal of food and drug a n a l y s i s 2 2 ( 2 0 1 4 ) 4 1 8 e4 2 4

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

Food And Health

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar