期刊
JOURNAL OF ANALYTICAL CHEMISTRY
卷 76, 期 2, 页码 156-164出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S106193482102009X
关键词
vanadium; magnetic solid phase extraction; inductively-coupled plasma mass spectrometry; determination; carbon nanotube; water analysis
资金
- Istanbul University-Cerrahpasa Scientific Research Fund
m-SPME is a strategy for preconcentration and separation of hydrophobic species from aqueous samples without the use of toxic organic solvents. This study developed a new analytical procedure for trace level vanadium(V), using magnetic Fe3O4 nanoparticles decorated multi-walled carbon nanotubes as an adsorbent. The method showed high efficiency in preconcentration and sensitive detection of vanadium.
Magnetic solid phase microextraction (m-SPME) is a well-defined strategy for the preconcentration and separation of hydrophobic species from aqueous samples without the use of toxic organic solvents. This work identifies a new analytical procedure for trace level vanadium(V) by inductively coupled plasma mass spectrometry coupled to magnetic solid phase microextraction. The procedure is based on the preconcentration of the V(V)-H2O2-4-(2-pyridylazo)resorcinol complex. Magnetic Fe3O4 nanoparticles decorated multi-walled carbon nanotubes as an adsorbent were investigated systematically. The calibration curve obtained by using m-SPME for vanadium(V) was linear from 0.011 to 10 mu g/L-. The method detection limit was found to be 1.5 ng/L. The m-SPME method was applied to the assay of vanadium in a certified reference water sample and the result was in total balance with the declared value. Finally, the proposed method was applied to the determination of vanadium in real water samples.
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