| 用草酸钙共沉淀法分离富集骨中稀土元素 |
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| 引用本文： | 申治国,钟广涛,孔聘颜,孙景信,王玉琦,杨简,苑旭波. 用草酸钙共沉淀法分离富集骨中稀土元素[J]. 分析测试学报, 1999, 18(4): 20-22 |
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| 作者姓名： | 申治国 钟广涛 孔聘颜 孙景信 王玉琦 杨简 苑旭波 |
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| 作者单位： | 1. 中山大学化学与化学工程学院,广州,510275
2. 中国科学院高能物理研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金!资助项目 (2890035) |
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| 摘 要： | 采用草酸钾作沉淀剂 ,在 pH2时将骨中钙部分沉淀 ,通过草酸钙载体共沉淀富集骨中稀土元素。用分光光度法、同位素示踪法和中子活化法检验模拟样品中稀土元素富集效果。结果显示 ,当每 g钙的沉淀量为48mg时 ,微克量和纳克量的稀土元素共沉淀率达到90 %以上。方法简单、可靠 ,且避免了钙、磷和钠等宏量元素的干扰 ,可对0.5～5g骨样中的稀土元素进行有效的分离富集。
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| 关 键 词： | 稀土元素 草酸钙 骨 共沉淀 同位素示踪法 中子活化分析 |
| 修稿时间： | 1998-09-30 |
Enrichment of Rare Earth Elements in Bones by Coprecipitation with Calcium Oxalate |
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| Shen Zhiguo,Zhong Guangtao,Kong Pinyan,Sun Jingxin,Wang Yuqi,Yang Jian,Yuan Xubo. Enrichment of Rare Earth Elements in Bones by Coprecipitation with Calcium Oxalate[J]. Journal of Instrumental Analysis, 1999, 18(4): 20-22 |
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| Authors: | Shen Zhiguo Zhong Guangtao Kong Pinyan Sun Jingxin Wang Yuqi Yang Jian Yuan Xubo |
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| Affiliation: | Shen Zhiguo1,Zhong Guangtao1,Kong Pinyan1,Sun Jingxin2,Wang Yuqi2,Yang Jian1,Yuan Xubo1 |
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| Abstract: | A method for the enrichment of rare earth elements(REE) in bones is described. Rare earth elements can be concentrated by coprecipitation with calcium oxalate at pH 2. The recovery of REE by this coprecipitation method was checked by spectrophotometry, spike isotope analysis and neutron activation analysis. More than 90% of micrograms/nanograms of REE can be coprecipitated with calcium oxalate, provided that the amount of calcium precipitated exceeds 48 mg for each gram of calcium in the sample. The method is simple and reliable. Macroelements, calcium, phosphorus and sodium interferences are absent for the analysis. |
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| Keywords: | Rare earth element Bone Calcium oxalate Coprecipitation Neutron activation analysis Spike isotope analysis |
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