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Preparation of Fe3O4-C18 nano-magnetic composite materials and their cleanup properties for organophosphorous pesticides

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Abstract

Magnetic Fe3O4-C18 composite nanoparticles of approximately 5–10 nm in size were synthesized and characterized by IR spectroscopy, atomic absorption spectroscopy, X-ray diffraction, and transmission electron microscopy. The magnetic Fe3O4-C18 composite nanoparticles were applied for cleanup and enrichment of organophosphorous pesticides. Comparative studies were carried out between magnetic Fe3O4-C18 composite nanoparticles and common C18 materials. Residues of organophosphorous pesticides were determined by gas chromatography in combination with a nitrogen/phosphorus detector. The cleanup and enrichment properties of magnetic Fe3O4-C18 composite nanoparticles are comparable with those of common C18 materials for enrichment of organophosphorous pesticides, but the cleanup and enrichment are faster and easier to perform.

Presumed mechanism for the adhesion of the OPs to the Fe3O4-C18 magnetic nanoparticles

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Acknowledgements

We would like to thank the Ningbo Science and Technology Bureau (2004C10065) and the Ningbo Institute of Technology, Zhejiang University, for financial support.

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Correspondence to Hao-Yu Shen.

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Shen, HY., Zhu, Y., Wen, XE. et al. Preparation of Fe3O4-C18 nano-magnetic composite materials and their cleanup properties for organophosphorous pesticides. Anal Bioanal Chem 387, 2227–2237 (2007). https://doi.org/10.1007/s00216-006-1082-1

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  • DOI: https://doi.org/10.1007/s00216-006-1082-1

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