| 碳化钨掺钒掺铬粉末中铬的测定 |
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| 引用本文： | 杨林.碳化钨掺钒掺铬粉末中铬的测定[J].中国钨业,2012,27(2):47-49. |
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| 作者姓名： | 杨林 |
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| 作者单位： | 潮州翔鹭钨业有限公司,广东潮州,515633 |
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| 基金项目： | 潮州翔鹭钨业有限公司碳化钨掺杂元素分析基金项目（XL-T-201103）t |
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| 摘 要： | 碳化钨掺钒掺铬粉末经过灼烧后转化为氧化钨,氧化钒与三氧化二铬的混合物,采用氢氧化钠溶解,过滤,分离钨和钒。将沉淀灰化后,氢氧化钠熔融,在酸性条件下用过硫酸铵将三价铬氧化成六价铬,用标准硫酸亚铁铵溶液滴定。
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| 关 键 词： | 碳化钨 掺钒掺铬 氧化还原滴定 |
Chromium Amount Measurement in the Tungsten Carbide Powder Doped with Vanadium and Chromium |
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| YANG Lin.Chromium Amount Measurement in the Tungsten Carbide Powder Doped with Vanadium and Chromium[J].China Tungsten Industry,2012,27(2):47-49. |
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| Authors: | YANG Lin |
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| Affiliation: | YA NG Lin (Chaozhou Xianglu Tungsten Industry Co., Ltd., Chaozhou 515633, Guangdong, China) |
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| Abstract: | Tungsten carbide powder doped with vanadium and chromium was converted to the mixture of tungsten oxide, vanadium oxide and chromium oxide upon burning. Tungsten and vanadium were separated by sodium hydroxide dissolution and filtration. Sodium hydroxide was melt upon sediment ashing process. Trivalent chromium was converted into hexavalent chromium by oxidation with ammonium persulfate under acidic conditions. The standard ferrous ammonium sulfate solution was applied to titrate chromium determination. |
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| Keywords: | tungsten carbide vanadium and chromium doping redox titration |
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