Issue 16, 2013

Magnetic retrieval of an extractant: fast ultrasound-assisted emulsification liquid–liquid microextraction for the determination of polycyclic aromatic hydrocarbons in environmental water samples

Abstract

A novel two-step extraction technique combining ultrasound-assisted emulsification liquid–liquid microextraction with magnetic retrieval has been developed and applied to the analysis of six polycyclic aromatic hydrocarbons in environmental water samples coupled with high-performance liquid chromatography. The technique involves an initial extraction of the target analytes by ultrasound-assisted emulsification liquid–liquid microextraction into fine droplets of an organic extractant; and a retrieval and separation process of the organic phase from the aqueous solution with highly hydrophobic magnetic particles. In this way, the organic phase containing the analytes is the target of the magnetic retrieval step rather than the analytes directly. A noteworthy feature of the method is the introduction of highly hydrophobic magnetic particles with hierarchical structure for the magnetic retrieval of an extractant. Under the optimized conditions, good linearity ranging from 0.016 to 80 μg L−1 was obtained in spiked water samples with correlation coefficients (R2) ranging from 0.9962 to 0.9998 and low limits of detection ranging from 2.0 to 19.5 ng L−1. The proposed method has been validated in the analysis of real water samples with recoveries in the range of 75.4% to 110.5% and relative standard deviations of less than 9.9%.

Graphical abstract: Magnetic retrieval of an extractant: fast ultrasound-assisted emulsification liquid–liquid microextraction for the determination of polycyclic aromatic hydrocarbons in environmental water samples

Supplementary files

Article information

Article type
Paper
Submitted
21 Mar 2013
Accepted
04 Jun 2013
First published
06 Jun 2013

Anal. Methods, 2013,5, 3999-4004

Magnetic retrieval of an extractant: fast ultrasound-assisted emulsification liquid–liquid microextraction for the determination of polycyclic aromatic hydrocarbons in environmental water samples

N. Wang, R. Shen, Z. Yan, H. Feng, Q. Cai and S. Yao, Anal. Methods, 2013, 5, 3999 DOI: 10.1039/C3AY40475G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements