| 分光光度法测定铜合金中微量钼 |
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| 引用本文： | 钟国秀,黄清华. 分光光度法测定铜合金中微量钼[J]. 中国材料科技与设备, 2011, 0(5): 46-47 |
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| 作者姓名： | 钟国秀 黄清华 |
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| 作者单位： | [1]湖北省机电研究设计院,湖北武汉430070 [2]湖北省建材研究设计院,湖北武汉430071 |
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| 摘 要： | 抗坏血酸—硫氰酸盐分光光度法较为广泛的应用于钼的测定，是灵敏度和相对稳定性较好的测定钼的一种方法。本文以铜盐作催化剂，用硫脲消除基体铜的干扰，用抗坏血酸作还原剂，使5价钼与硫氰酸盐形成橙色络合物，借此作为钼的光度法测定。此络合物的最大吸收波长为460 nm，钼的浓度0～4.0 mg/L 范围内有良好的线性关系。方法用于铜合金中钼的测定，相对标准偏差小于2%
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| 关 键 词： | 钼 抗坏血酸－硫氰酸盐 铜合金 分光光度法 |
Spectrophotometric Determination of Molybdenum in Copper Alloy |
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| Affiliation: | ZHONG Guo -- xiu , HUANG Qing --hua (1. Hubei Reserch＆ Designing Institute of Mechanical Electronic Engineering, Hubei, Wuhan, 430070, China; 2. Hubei Reserch ＆ Designing Institute of Building Material, Hubei, Wuhan, 430071, China) |
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| Abstract: | Ascorbic acid -- potassium salt is more widely used in spectrophotometric determination of molybdenum, is the relative stability of better sensitivity and a method of determination of molybdenum. Taking copper as a catalyst, copper thiourea to eliminate the interference of the matrix, with ascorbic acid as reducing agent, the molybdenum （ V ） orange complex formation with thioeyanate, to a determination of molybdenum. The maximum absorption wavelength of 460 nm, the concentration of molybdenum 0-4. 0 mg / L in the range a good linear relationship. Methods for the determination of molybdenum in copper alloy, the relative standard deviation less than 2%. |
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| Keywords: | Molybdenum Ascorbic acid- potassium salt Copper alloy Spectrophotometry |
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