Research & Faculty

Default Header Image

Extraction of trace polychlorinated biphenyls in environmental waters by well-dispersed velvet-like magnetic carbon nitride nanocomposites

TitleExtraction of trace polychlorinated biphenyls in environmental waters by well-dispersed velvet-like magnetic carbon nitride nanocomposites
Publication TypeJournal Article
Year of Publication2017
AuthorsLi, D, Zhu, J, Wang, M, Bi, W, Huang, X, Chen, DDa Yong
JournalJournal of Chromatography A
Volume1491
Pagination27 - 35
ISSN0021-9673
KeywordsRapid adsorption and desorption
Abstract

Abstract A velvet-like magnetic carbon nitride nanocomposites synthesized by chemical co-precipitation was used to develop a highly efficient magnetic solid-phase extraction method for the pre-concentration of trace polychlorinated biphenyls (PCBs) in water samples. The advantages of this nanocomposite such as large surface area, good dispersity, low solvent consumption, rapid analyte adsorption (30 s) and reusability make it a good sorbent. Factors affecting extraction efficiency were systematically investigated and optimized by response surface methodology (RSM). Under optimal experimental conditions, the limits of detection (LODs S/N = 3) of the developed method for \{PCBs\} investigated were in the range of 9.0 × 10−6–5.8 × 10−5 μg/mL. This method was then used for the analysis of four real water samples. Good spiked recoveries over the range of 80.1-118.4%, and \{RSDs\} (n = 5) of 0.02–3.7% were obtained. This work demonstrated the potential of using this nanocomposite for adsorption, pre-concentration, or even removal of different carbon-based aromatic compounds or other hydrophobic pollutants.

URLhttp://www.sciencedirect.com/science/article/pii/S0021967317302868
DOI10.1016/j.chroma.2017.02.048