title: An etched stainless steel wire/ionic liquid-solid phase microextraction technique for the determination of alkylphenols in river water.
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 °C 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/N=3) of the four APs ranged from 0.01 to 0.04 ng mL(-1) and the RSD values for purified water spiked with APs ranged from 4.0 to 11.8% (n=3). The calibration graphs were linear in the concentration range from 0.5 to 200 ng mL(-1) (R(2)>0.9569). 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.
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province, China 133002.
authors.forename: Meiyu
authors.initials: M
authors.lastname: Cui
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province, China 133002.
authors.forename: Jinxue
authors.initials: J
authors.lastname: Qiu
authors.affiliation: Department of Chemistry, BK21 School of Chemical Materials Science, Department of Energy Science and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, Korea.
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Li
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province, China 133002.
authors.forename: Miao
authors.initials: M
authors.lastname: He
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province, China 133002.
authors.forename: Mingshi
authors.initials: M
authors.lastname: Jin
authors.affiliation: Department of Chemistry, BK21 School of Chemical Materials Science, Department of Energy Science and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, Korea.
authors.forename: Jiman
authors.initials: J
authors.lastname: Kim
authors.affiliation: SAFE - Department of Science of Agriculture, Food and Environment, University of Foggia, via Napoli 25, I-71100 Foggia, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Quinto
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province, China 133002. Electronic address: dhli@ybu.edu.cn.
authors.forename: Donghao
authors.initials: D
authors.lastname: Li
keywords: Alkylphenols; GC–MS; Ionic liquids; SPME; Water