| 二溴对氯偶氮甲磺（DBCMSA）光度法测定铈组稀土的研究 |
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| 引用本文： | 方国臻 潘教麦. 二溴对氯偶氮甲磺（DBCMSA）光度法测定铈组稀土的研究[J]. 华东师范大学学报(自然科学版), 1999, 0(3): 64-67 |
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| 作者姓名： | 方国臻 潘教麦 |
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| 作者单位： | 华东师范大学化学系!上海200062 |
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| 摘 要： | 研究了新显色剂二溴对氯偶氮甲磺与铈组稀土离子的显色反应。在盐酸、磷酸、高氯酸、 酸、硝酸介质中，与组稀土形成稳定的络合物，最大吸收在６４４ｎｍ。在测定钢样中铈组稀土总量时，反应有很高的选择性，不需加任何掩蔽剂，分析结果与标准值基本相符。
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| 关 键 词： | 铈组稀土 DBCMSA 稀土元素 光度法 显色反应 |
Study on Spectrophotometric Determination of Cerium Subgroup Rare Earths with A New Color Reagent Dibromo-p-chloro-methylsufonazo (DBCMSA) |
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| Fang Guozhen Pan Jiaomai. Study on Spectrophotometric Determination of Cerium Subgroup Rare Earths with A New Color Reagent Dibromo-p-chloro-methylsufonazo (DBCMSA)[J]. Journal of East China Normal University(Natural Science), 1999, 0(3): 64-67 |
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| Authors: | Fang Guozhen Pan Jiaomai |
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| Abstract: | Color reactions of cerium subgroup rare earths with DBCMSA are studied in detail. In hydrochloric, phosphoric, perchcoric, sulfuric and nitric acid media, DBCMSA reacts with cerium subgroup rare earths to form stable complex having an absorption maximun at 644nm. The color reaction is found to be highly selective and has been successfully employed to determine the total amounts of the cerium subgroup rare earths in steel samples without adding any masking agents. Results obtained are well in agreement with standard values. |
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| Keywords: | dibromo-p-chloro-methylsulfonazo spectrophotometry cerium subgroup rare earths |
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