Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Dispersive micro-solid phase extraction based on graphene/polydopamine composite for the extraction of pyrethroids in water samples

Abstract

In this study, a simple, rapid, precise, and environmentally friendly microextraction named dispersive micro-solid phase extraction based on graphene/polydopamine composite as sorbent was investigated for the analysis of four pyrethroids (fenpropathrin, cyhalothrin, etofenprox and bifenthrin) in water samples. The graphene/polydopamine composite was successfully synthesized using a one-step method, and was characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy and X-ray photoelectron spectrum. The simplicity and speed of dispersive micro-solid phase extraction and high surface area and adsorptivity of the graphene/polydopamine composite were combined in the proposed method. Several main parameters, including the amount of the sorbent, extraction time, ionic strength and desorption conditions, were independently optimized and the results were compared to find the best extraction setup for dispersive micro-solid phase extraction. Under the optimal conditions, good linearity was observed for all target analytes, with coefficient of determination ranging from 0.9997 to 0.9999. The extraction recoveries obtained using the proposed method ranged from 76.81% to 85.29%, and the limits of detection varied from 1.5 to 3 μg L-1. In addition, the relative standard deviation values for the intra-day precision were between 0.41% and 3.00%, while the inter-day precision showed relative standard deviation values ranging from 1.61% to 5.59%. Overall, the figures of merit of the entire procedure showed this technique could produce satisfactory results in the detection of pyrethroids in water samples or additional organic pollutants in the future.

Back to tab navigation

Article information


Submitted
18 Mar 2020
Accepted
06 May 2020
First published
08 May 2020

Anal. Methods, 2020, Accepted Manuscript
Article type
Paper

Dispersive micro-solid phase extraction based on graphene/polydopamine composite for the extraction of pyrethroids in water samples

Q. Xu, K. Qiao, C. Yan, Z. Liu, R. Lu and W. Zhou, Anal. Methods, 2020, Accepted Manuscript , DOI: 10.1039/D0AY00562B

Social activity

Search articles by author

Spotlight

Advertisements