| 间硝基偶氮氯膦(CPAmN)及其在稀土元素测定中的应用 |
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| 引用本文： | 徐钟隽,胡昭圣,贾锡平,潘教麦. 间硝基偶氮氯膦(CPAmN)及其在稀土元素测定中的应用[J]. 上海师范大学学报(自然科学版), 1986, 0(1) |
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| 作者姓名： | 徐钟隽 胡昭圣 贾锡平 潘教麦 |
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| 作者单位： | 华东师范大学化学系，华东师范大学化学系，华东师范大学化学系，华东师范大学化学系 |
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| 摘 要： | 本文研究了CPAmN试剂的特性、La-CPAmN的络合物形成反应,并测定了其积累稳定常数。文中提出了测定铈组稀土、钇和稀土总量的方法,并试用于具体样品,取得了满意的结果。
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| 关 键 词： | 间硝基偶氮氯膦 稀土元素测定 光度分析 |
Chlorophosphonazo-m-NO~2 (CPAmN) and Its Application in Spectrophotometric Determination of Rare Earths |
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| XU ZHONGJUN HU ZHAOSHENG JIA XIPING PAN JIAOMAI. Chlorophosphonazo-m-NO~2 (CPAmN) and Its Application in Spectrophotometric Determination of Rare Earths[J]. Journal of Shanghai Normal University(Natural Sciences), 1986, 0(1) |
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| Authors: | XU ZHONGJUN HU ZHAOSHENG JIA XIPING PAN JIAOMAI |
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| Affiliation: | Department of Chemistry |
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| Abstract: | Chlorophosphonazo-m-NO_2 is proposed as a chromogenic reagent for spectrophotometric determination of cerium sub-group rare earths, yttrium, and total rare earths under different conditions. Cerium sub-group rare earths can be determined in the presence of yttrium subgroup elements by using oxalic acid as a masking reagent. A prior PMBP-petroleumether extraction is required for complex samples. Yttrium, in the presence of cerium sub-group rare earths, should be separated before determination by the combination of masking with sodium flouride-malic acid mixture and an extraction procedure. As for the total rare earths determination, the addition of oxalic acid is omitted, but the pre-extraction with PMBP-petroleum ether is usually necessary. |
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| Keywords: | chlorophosphonazo-m-NO_2 rare earths determination spectrophotometry. |
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