Abstract

In this study, a stainless steel wire/ionic liquid-solid phase microextraction technique was developed for the direct extraction of APs from water samples. Some parameters were optimised, such as selection of the substrate and ILs, extraction time, extraction temperature, stirring rate and sample pH, etc. The experimental data demonstrated that the etched stainless steel wire was a suitable substrate for IL-coated SPME. The coating was prepared by directly depositing the ILs onto the surface of the etched stainless steel wire, which exhibited a porous structure and a high surface area. The [C8MIM][PF6] IL exhibited maximum efficiency with an extraction time of 30 min, and the aqueous sample was maintained at 40 1C and adjusted to pH 2 under stirring conditions. The enrichment factor of the IL coating for the four APs ranged from 1382 to 4779, the detection limits (LOD, S/N¼3) of the four APs ranged from 0.01 to 0.04 ng mL1 and the RSD values for purified water spiked with APs ranged from 4.0 to 11.8% (n¼3). The calibration graphs were linear in the concentration range from 0.5 to 200 ng mL1 (R240.9569). The optimised method was successfully applied for the analysis of real water samples, and the method was suitable for the extraction of APs from water samples.

Autore Pugliese

• Quinto Maurizio

Tutti gli autori

• M. Cui , J. Qiu , Z. Li , M. He , M. Jin , J. Kim , M. Quinto , D. Li

Titolo volume/Rivista

TALANTA

Anno di pubblicazione

2014

ISSN

0039-9140

ISBN

Non Disponibile

Numero di citazioni Wos

11

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

11

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile