| 硫氰酸盐比色测定钼的方法研究 |
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| 引用本文： | 徐志昌,张萍. 硫氰酸盐比色测定钼的方法研究[J]. 中国钼业, 2012, 0(4): 22-26 |
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| 作者姓名： | 徐志昌 张萍 |
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| 作者单位： | 清华大学核能与新能源技术研究院,北京102201 |
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| 摘 要： | 本文依据对硫氰酸盐比色测定Mo(ⅴ)所收集、整理的文献资料,选择性地对有机还原法进行了部分试验研究。研究结果表明:(1)采用单有机还原剂,或者硫脲,或者抗坏血酸,对酸性溶液中的Mo(Ⅵ),进行有效、稳定地还原,使之转化为Mo(ⅴ),但要同时添加铜离子或者铁离子作催化剂;(2)采用紫外可见光分光光度计代替传统的可见光分光光度计,这不但扩宽了波谱范围,精确了光谱曲线,而且,消除了标准曲线与测量结果的人工误差。(3)对于钨钼共存的样品,应当采用萃取比色方法,以消除它们之间的相互干扰。
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| 关 键 词： | 钼(Ⅵ)浓度的测定 硫氰酸盐比色法 分光光度计 比色测定的标准曲线 |
STUDY ON THE METHOD OF DETERMING MOLYBDENUM BY THIOCYANATE COLORIMETRIC |
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| XU Zhi -chang Zhang Ping. STUDY ON THE METHOD OF DETERMING MOLYBDENUM BY THIOCYANATE COLORIMETRIC[J]. China Molybdenum Industry, 2012, 0(4): 22-26 |
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| Authors: | XU Zhi -chang Zhang Ping |
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| Affiliation: | XU Zhi -chang Zhang Ping (Institute of Nuclear and New Energy Technology ,Tsinghua University, Beijing 102201, China) |
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| Abstract: | Depended on the gathered information of journal papers for spectrophotornetric methods of molybdenum thiocyanide, partner experiments has been studied in the present of copper sulfate as a catalyst and thiourea as a reductant. The results had shown that the translation of molybdenum from Mo （ vi ） to Mo （ V ） is very stable ; The spectrophotometric methods by violent visible spectrometer is very important for accurate determination of molybdenum content in solution; In order to get the accurate determination , the extraction spectrophotometric method is recommended. |
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| Keywords: | determination of molybdenum in solution spectrophotometric methods of molybdenum thiocyanate spectrogram of spectrophotometric analysis standard curve of spectrometric methods |
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