光谱学与光谱分析 |
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Study on the Method of Nanometer-Size Zirconium Dioxide Enrichment Separation and Inductively Coupled Plasma Mass Spectrometry Determination of Trace Barium(Ⅱ) in Water |
DU Ying-qiu1, 2, YIN Yi-dong1*, FAN Nai-ying1, CHEN Peng-gang1, ZHANG Xiao-bo2, REN Hong-bo2, CHEN Guo-you2, QU Qiu-yao1, SUN Zhi-bo1, CHEN Yue-xin1 |
1. School of Chemical Engineering & Materials, Heilongjiang University, Harbin 150080, China 2. Inspection and Testing Center for Quality of Cereals and Their Products(Harbin), Ministry of Agriculture, Harbin 150086, China |
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Abstract 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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Received: 2012-05-08
Accepted: 2012-07-20
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Corresponding Authors:
YIN Yi-dong
E-mail: yin_yidong@sina.com
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