Abstract
A new absorbent of nanometer-size TiO2 colloid for Cu(II) was studied in this work. The adsorption rate could reach above 99% when the pH values were at the range of 5–6. The adsorption balance time, adsorption capacities, and the eluent were investigated. A novel method of trace Cu(II) preconcentration and separation with nanometer-size titanium dioxide colloid and determination by flame atomic absorption spectrometry (FAAS) was advanced. The detection limit (3σ) of the method was 1.15 μg · L−1, and the relative standard deviation (R.S.D) was 1.53% (n=6). Environmental sample experiments were also conducted to test the feasibility of the method, and it came out that the recovery rates were between 95.9% and 97.8%.
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Foundation item: Supported by the Natural Science Foundation of Hubei Province(2006ABA236)
Biography: QIAN Shahua (1954–), female, Professor, research direction: environment analytical chemistry.
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Qian, S., Lin, H., Li, X. et al. Preconcentration and separation of trace copper in water samples with nanometer-size TiO2 colloid and determination by FAAS. Wuhan Univ. J. of Nat. Sci. 12, 349–352 (2007). https://doi.org/10.1007/s11859-006-0006-4
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DOI: https://doi.org/10.1007/s11859-006-0006-4