Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 387, Issue 6, Pages 2227-2237Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-006-1082-1
Keywords
magnetic Fe3O4-C18 composite nanoparticles; organophosphorous pesticides; cleanup and enrichment; gas chromatography in combination with a nitrogen/phosphorus detector
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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.
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