| 碱熔蒸馏分离-催化分光光度法测定超痕量锇、钌 |
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| 引用本文： | 来新泽,王 琳,牛 娜,王敏捷,来克冰. 碱熔蒸馏分离-催化分光光度法测定超痕量锇、钌[J]. 贵金属, 2014, 35(2): 50-58 |
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| 作者姓名： | 来新泽 王 琳 牛 娜 王敏捷 来克冰 |
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| 作者单位： | 河南省岩石矿物测试中心国土资源部贵金属分析与勘查技术重点实验室;辽宁省地质矿产研究院; |
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| 基金项目： | 国土资源部公益性行业科研专项经费项目(201211081-03-34) |
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| 摘 要： | 研制了新型的锇、钌混合氧化剂K2Cr2O7-NaBrO3和锇稀释剂As2O3-H2SO4,能够降低碱熔蒸馏分离-催化分光光度法测定锇、钌的全流程空白,提高了锇、钌催化As3+-Ce4+体系的灵敏度。在35℃时,通过延长反应时间,提高了方法的稳定性和降低方法的检测下线。使Os、Ru检出限(3σ)分别达到0.010 ng/g和0.012 ng/g。改进后的蒸馏装置使锇、钌蒸馏的安全性和工作效率极大提高。方法操作简便、效率高、成本低。测定国家铂族元素地球化学一级标准物质中的Os、Ru,相对误差(RE)为-18.0%~+4.40%,12次测定的相对标准偏差(RSD)均小于20.1%,满足地球化学调查样品分析质量要求。
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| 关 键 词： | 分析化学 蒸馏分离 催化分光光度法 超痕量 锇 钌 |
| 收稿时间： | 2013-07-15 |
Determination of Ultra Trace Osmium and Ruthenium by Alkaline Fusion Distillation Separation-Catalytic Spectrophotometric Method |
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| LAI Xinze,WANG Lin,NIU N,WANG Minjie and LAI Kebing. Determination of Ultra Trace Osmium and Ruthenium by Alkaline Fusion Distillation Separation-Catalytic Spectrophotometric Method[J]. Precious Metals, 2014, 35(2): 50-58 |
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| Authors: | LAI Xinze WANG Lin NIU N WANG Minjie LAI Kebing |
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| Affiliation: | Henan Rock Mineral Testing Centers, Key Lab of Ministry of Land and Resources Analysis and Exploration of Precious Metals, Zhenzhou 450012, China;Henan Rock Mineral Testing Centers, Key Lab of Ministry of Land and Resources Analysis and Exploration of Precious Metals, Zhenzhou 450012, China;The Geology Mineral Institute for Research of Liaoning Province, Shenyang 110032, China;Henan Rock Mineral Testing Centers, Key Lab of Ministry of Land and Resources Analysis and Exploration of Precious Metals, Zhenzhou 450012, China;Henan Rock Mineral Testing Centers, Key Lab of Ministry of Land and Resources Analysis and Exploration of Precious Metals, Zhenzhou 450012, China |
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| Abstract: | |
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| Keywords: | analytical chemistry distillation separation catalytic spectrophotometric method ultra trace osmium ruthenium |
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