| 5-Br-PADAP-H_2O_2分光光度法测定油品中微量钒 |
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| 引用本文： | 王知彩,崔平,刘向阳. 5-Br-PADAP-H_2O_2分光光度法测定油品中微量钒[J]. 石油化工, 2001, 30(4) |
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| 作者姓名： | 王知彩 崔平 刘向阳 |
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| 作者单位： | 1. 华东冶金学院 化工系,
2. 沙洲钢铁集团公司, |
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| 摘 要： | 利用 5 -Br-PADAP -H2 O2 -V三元体系分光光度法测定油品中微量钒 ,考查了各种影响因素 ,得到测定的适宜条件。结果表明 ,此三元体系在酸性条件下能长时间稳定 ,以H3PO4作介质 ,乙二胺四乙酸钠和酒石酸作掩蔽剂可消除油品中常见离子的干扰。方法操作简单、灵敏度高、准确性好 ,适用于油品中微量钒的分析。
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| 关 键 词： | 分光光度法 油品 5-Br-PADAP 钒 |
Spectrophotometric Determination of Vanadium in Oil Products |
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| WANG Zhi-cai,CUI Ping,LIU Xiang-yang. Spectrophotometric Determination of Vanadium in Oil Products[J]. Petrochemical Technology, 2001, 30(4) |
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| Authors: | WANG Zhi-cai CUI Ping LIU Xiang-yang |
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| Affiliation: | WANG Zhi-cai 1,CUI Ping 1,LIU Xiang-yang 2 |
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| Abstract: | 5 - Br - PADAP - H2O2 - V spectrophotometry was used to determine vanadium in oil products. Influencing factors were studied to obtain the best conditions of determination. Results indicate that in acid medium, vanadium reacts with 5 - Br - PADAP and H2O2 to form a violet - red complex, which is very stable under room temperatures. The interference of metal ions in the oil can be eliminated using H3PO3 solution as medium and Na - EDTA solution and tartaric acid as masking agents. The operation is simple, with high sensitivity, and good precision and accuracy. The recovery is in the range of 94.9 % ～103.5 % |
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| Keywords: | spectrophotometry oil products 5-Br-PADAP vanadium |
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