Spectroscopy and Spectral Analysis, Volume. 32, Issue 11, 3129(2012)
Study on the Method of Nanometer-Size Zirconium Dioxide Enrichment Separation and Inductively Coupled Plasma Mass Spectrometry Determination of Trace Barium(Ⅱ) in Water
Monoclinic fusiform zirconium dioxide (ZrO2) nanoparticles were synthesized by hydrothermal method, a method was established based on monoclinic fusiform nanometer-sized ZrO2 enrichment separation, and trace barium in water was determined by inductively coupled plasma mass spectrometry(ICP-MS). The detection limit for Ba(Ⅱ) was 0.007 ng·mL-1, and the relative standard deviation was 0.13%(n=11). The optimal enrichment separation conditions of nanometer-sized ZrO2 for Ba(Ⅱ) were studied in detail, it was found that the percentage of adsorbed Ba(Ⅱ) was more than 99% under pH 10.0 and 2 mL 0.5 mol·L-1 HCl was sufficient for elution of Ba(Ⅱ) by more than 98%. The static adsorption capacity of ZrO2 to Ba(Ⅱ) was 196.6 μg·g-1 and enrichment factor was 250. Properties of nanometer-sized ZrO2 were discussed through regeneration experiment and effects of co-existing ions and contrast experiment to ordinary ZrO2, adsorption properties of nanometer-sized ZrO2 were applied to real samples in the analysis of Ba(Ⅱ) and the determination was carried out by ICP-MS with satisfactory results.
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DU Ying-qiu, YIN Yi-dong, FAN Nai-ying, CHEN Peng-gang, ZHANG Xiao-bo, REN Hong-bo, CHEN Guo-you, QU Qiu-yao, SUN Zhi-bo, CHEN Yue-xin. Study on the Method of Nanometer-Size Zirconium Dioxide Enrichment Separation and Inductively Coupled Plasma Mass Spectrometry Determination of Trace Barium(Ⅱ) in Water[J]. Spectroscopy and Spectral Analysis, 2012, 32(11): 3129
Received: May. 8, 2012
Accepted: --
Published Online: Nov. 22, 2012
The Author Email: Ying-qiu DU (xunzhao1981@163)