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| 铋试金﹣二次灰吹﹣ICP-AES测定黑色岩中的铂、钯、金 |
| Determination of Pt, Pd and Au in black rock by bismuth assay - secondary ash blowing - ICP-AES |
| Received:October 29, 2021 |
| DOI： |
| 中文关键词: 铋试金 贵金属 二次灰吹 黑色岩 碲银合粒 |
| 英文关键词: bismuth assay precious metals secondary ash blowing black rock silver tellurium particles |
| 基金项目:豫地矿科研[2020]7号；豫地矿勘查(2021)03号；豫自然资函[2021]157号-4 |
| Author Name | Affiliation | | ZHANG Fan | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | WANG Lin | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | GUO Jia-fan | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | GAO Zhi-jun | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | CHEN Yan | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | LIU Mian | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | GONG Liang | Key Laboratory of Precious Metals Analysis and Exploration Technology Ministry of Natural Resources,Henan Province Rock & Mineral Testing Centre, Zhengzhou 450012, China | | WANG Jing-ying | Changchun Sci-Tech University, Changchun 130600, China |
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| 中文摘要: |
| 黑色岩中的大量碳、硫、镍影响铋试金的捕集和操作。在铋试金配料中加入硝酸钾、铁粉、硝酸银和亚碲酸钾，可消除碳、硫的影响，且一次灰吹时铋扣能快速脱皮、二次灰吹可得到光滑圆整的贵金属碲银合粒。合粒经硝酸、盐酸溶解，电感耦合等离子体光谱法(ICP-AES)测定，铂、钯、金的回收率均大于97%，方法检出限为Pt 0.020 μg/g、Pd 0.020 μg/g、Au 0.021 μg/g。对标准物质测定结果的相对误差(RE)为-4.31%~3.77%，相对标准偏差(RSD)均小于6.92%。 |
| 英文摘要: |
| Large amounts of carbon, sulfur and nickel in the black rock affect the collection and operation of bismuth assays. Adding potassium nitrate, iron powder and silver nitrate and potassium tellurite can eliminate the influence of carbon and sulfur, and the bismuth buckle can be quickly peeled during the first soot blowing, and the smooth and round silver tellurium particles can be obtained after the second soot blowing. After the bismuth buckle was dissolved in nitric acid and hydrochloric acid, platinum, palladium and gold in solution were determined by ICP-AES, and their recovery rates were more than 97%. The detection limits of Pt, Pd and Auwere 0.020 μg/g, 0.020 μg/g and 0.021 μg/g, respectively. The relative error (RE) of the determination results for reference materials is -4.31%~3.77%, and the relative standard deviation (RSD) is all less than 6.92%. |
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