电位落差法测定砂岩型铀矿氧化还原电位初探 : = Primary study on oxidation-reduction potential of sandstone-type uranium deposit by measuring potential difference
岩石的电位差(ΔEh)控制着变价元素的地球化学行为,对揭示矿床形成机理及普查找矿具有重要意义。本文以重铬酸钾作为氧化剂,采用电位落差法测定砂岩型铀矿的氧化还原电位,系统研究了平衡电位时间、氧化剂浓度及酸度、岩矿样品与氧化剂溶液的固液比及样品浸泡时间对砂岩型铀矿Eh值测定的影响。结果表明:2 g砂岩型铀矿样品在50 mL 0.10 mol/L的1/6重铬酸钾溶液(介质为10%硫酸)浸泡2 h,氧化还原电位仪的电极在溶液中平衡20min后,Eh测定效果最佳。按照实验最优条件测定三个砂岩型铀矿样品的ΔEh,判断矿物氧化还原环境,与氧化系数法相吻合。.
The potential difference (ΔEh)of rocks controls the geochemical behavior of valence elements,which is of great significance for revealing the formation mechanism of ore deposits and prospecting for deposits.In this paper, potassium dichromate was used as oxidant to determine the oxidation-reduction potential of sandstone-type uranium deposits by potential drop method. Some parameters influencing the Eh determination of sandstone-type uranium deposits,including equilibrium potential time, oxidant concentration and acidity, solidliquid ratio of rock sample and oxidant solution and sample soaking time were optimized.The results indicated that the Eh determination effect was best when the 2g sandstone-type uranium ore sample was immersed in 50mL 0.10mol/L 1/6 potassium dichromate solution(the medium was 10% sulfuric acid)for 2h,and the electrode of redox potential instrument was balanced in the solution for 20min.The Eh of three sandstone-type uranium samples was determined according to the optimum experimental conditions, and the redox environment of the minerals was judged, which was consistent with the oxidation coefficient method..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019-12-15 2019 |
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| Erschienen: |
2019-12-15 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2019 |
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| Enthalten in: |
Di zhi diao cha yu yan jiu - (2019), 04 vom: 15. Dez., Seite 267-270+277 Original Letters: Enthalten in 地质调查与研究 (DE-600)2991369-X (DE-600)2991369-X 天津市 |
| Reihe: |
China Academic Journals (CAJ), A, 理工A(数学物理力学天地生) = Mathematics/ Physics/ Mechanics/ Astronomy |
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| Sprache: |
Chinesisch |
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| Weiterer Titel: |
Primary study on oxidation-reduction potential of sandstone-type uranium deposit by measuring potential difference |
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| Beteiligte Personen: |
王娜 [VerfasserIn] |
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| Links: |
oversea.cnki.net [lizenzpflichtig] |
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| Anmerkungen: |
Author info:WANG Na;WANG Jia-song;ZENG Jiang-ping;WANG li-qiang;WU liang-ying;WEI Shuang;Tianjin Center of Geological Survey China Geological Survey;Key Laboratory of Uranium Geology China Geological Survey |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
CAJ646686607 |
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| 245 | 1 | 0 | |a 电位落差法测定砂岩型铀矿氧化还原电位初探 |b = Primary study on oxidation-reduction potential of sandstone-type uranium deposit by measuring potential difference |
| 246 | 3 | 1 | |a Primary study on oxidation-reduction potential of sandstone-type uranium deposit by measuring potential difference |
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| 500 | |a Author info:WANG Na;WANG Jia-song;ZENG Jiang-ping;WANG li-qiang;WU liang-ying;WEI Shuang;Tianjin Center of Geological Survey China Geological Survey;Key Laboratory of Uranium Geology China Geological Survey | ||
| 520 | |a 岩石的电位差(ΔEh)控制着变价元素的地球化学行为,对揭示矿床形成机理及普查找矿具有重要意义。本文以重铬酸钾作为氧化剂,采用电位落差法测定砂岩型铀矿的氧化还原电位,系统研究了平衡电位时间、氧化剂浓度及酸度、岩矿样品与氧化剂溶液的固液比及样品浸泡时间对砂岩型铀矿Eh值测定的影响。结果表明:2 g砂岩型铀矿样品在50 mL 0.10 mol/L的1/6重铬酸钾溶液(介质为10%硫酸)浸泡2 h,氧化还原电位仪的电极在溶液中平衡20min后,Eh测定效果最佳。按照实验最优条件测定三个砂岩型铀矿样品的ΔEh,判断矿物氧化还原环境,与氧化系数法相吻合。 | ||
| 520 | |a The potential difference (ΔEh)of rocks controls the geochemical behavior of valence elements,which is of great significance for revealing the formation mechanism of ore deposits and prospecting for deposits.In this paper, potassium dichromate was used as oxidant to determine the oxidation-reduction potential of sandstone-type uranium deposits by potential drop method. Some parameters influencing the Eh determination of sandstone-type uranium deposits,including equilibrium potential time, oxidant concentration and acidity, solidliquid ratio of rock sample and oxidant solution and sample soaking time were optimized.The results indicated that the Eh determination effect was best when the 2g sandstone-type uranium ore sample was immersed in 50mL 0.10mol/L 1/6 potassium dichromate solution(the medium was 10% sulfuric acid)for 2h,and the electrode of redox potential instrument was balanced in the solution for 20min.The Eh of three sandstone-type uranium samples was determined according to the optimum experimental conditions, and the redox environment of the minerals was judged, which was consistent with the oxidation coefficient method. | ||
| 610 | 2 | 4 | |a 中国地质调查局天津地质调查中心 |
| 610 | 2 | 4 | |a 中国地质调查局铀矿地质重点实验室 |
| 650 | 4 | |a 矿床学 | |
| 650 | 4 | |a 天文学、地球科学 | |
| 650 | 4 | |a Geology | |
| 650 | 4 | |a Mining Engineering | |
| 650 | 4 | |a 理工A(数学物理力学天地生) | |
| 650 | 4 | |a Mathematics/ Physics/ Mechanics/ Astronomy | |
| 650 | 4 | |a 理工B(化学化工冶金环境矿业) | |
| 650 | 4 | |a Chemistry/ Metallurgy/ Environment/ Mine Industry | |
| 650 | 4 | |a 电位差 | |
| 650 | 4 | |a 氧化还原电位 | |
| 650 | 4 | |a 砂岩型铀矿 | |
| 650 | 4 | |a 氧化剂 | |
| 650 | 4 | |a potential difference | |
| 650 | 4 | |a oxidation-reduction potential | |
| 650 | 4 | |a sandstone-type uranium deposit | |
| 650 | 4 | |a oxidant | |
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