期刊
MICROCHIMICA ACTA
卷 180, 期 15-16, 页码 1471-1477出版社
SPRINGER WIEN
DOI: 10.1007/s00604-013-1084-6
关键词
Hg; Fluorescence probe; Rhodamine; Solid phase extraction
资金
- Natural Science Foundation of Anhui Province [1208085QB34, 2012SQRL148ZD]
- Anhui Science and Technology University Key Subject [AKXK201022]
Magnetic Fe3O4@SiO2 core shell nanoparticles containing diphenylcarbazide in the shell were utilized for solid phase extraction of Hg(II) from aqueous solutions. The Hg(II) loaded nanoparticles were then separated by applying an external magnetic field. Adsorbed Hg(II) was desorbed and its concentration determined with a rhodamine-based fluorescent probe. The calibration graph for Hg(II) is linear in the 60 nM to 7.0 mu M concentration range, and the detection limit is at 23 nM. The method was applied, with satisfying results, to the determination of Hg(II) in industrial waste water.
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