Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry
The process of sample preparation is affected by many different factors in multi-element determination for lead-zinc ore. However, single-factor experiment design cannot provide a reasonable solution for the simultaneous optimization of multiple-factor experiments. In this study, minerals were disso...
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| Format: | Article |
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Science Press, PR China
2015-01-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2015.01.006 |
| _version_ | 1811168467333677056 |
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| author | MENG Shi-xian DENG Fei-yue YANG Yuan SU Wei-han MIN Xiao-fang YONG Fu-zeng |
| author_facet | MENG Shi-xian DENG Fei-yue YANG Yuan SU Wei-han MIN Xiao-fang YONG Fu-zeng |
| author_sort | MENG Shi-xian |
| collection | DOAJ |
| description | The process of sample preparation is affected by many different factors in multi-element determination for lead-zinc ore. However, single-factor experiment design cannot provide a reasonable solution for the simultaneous optimization of multiple-factor experiments. In this study, minerals were dissolved by hydrochloric acid-nitric acid. The effect of digestion conditions was studied. Ratio and volume of the mixed acids as well as time and temperature of the digestion were optimized by orthogonal test and range analysis. The conditions of digestion were optimized as: ratio and volume of the mixed acids at 3:1 and 10 mL, respectively, time and temperature of the digestion of 120 min and 90℃, respectively. The contents of 15 major and trace elements (Pb, Zn, Cu, Mn, As, Ag, Bi, Cd, Co, Ni, Ga, In, Mo, Ge and Sb) were determined simultaneously by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). Under optimal conditions, the method was verified by certified national reference material GBW 07165. The results show that the precision (RSD, n=12) and accuracy are less than 5% for most elements, and the detection limit is 0.0019-0.048 μg/g. In addition, as the lead-zinc ore usually exits in the form of sulfide, the accuracy and feasibility of the method can be verified by a series of national standard sulfide materials. The results were consistent with the certified values within uncertainties. After using the proposed method to analyze large quantities of lead-zinc ore samples collected from Hunan, the qualification rates for standard samples and blind samples are 100% and 97%, respectively. This method optimizes the experimental conditions, and solves the complex problem of sample pretreatment. The method has many advantages, including low consumption of reagents, green environment and simultaneous determination of multi-elements, which indicates that it is an accurate and practical method to simultaneously determine the content of lead and zinc. |
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| last_indexed | 2024-04-10T16:26:50Z |
| publishDate | 2015-01-01 |
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| spelling | doaj.art-65191699e4ed4aa4951e8b502a83da5c2023-02-09T01:42:41ZengScience Press, PR ChinaYankuang ceshi0254-53572015-01-01341485410.15898/j.cnki.11-2131/td.2015.01.006ykcs-34-1-48Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission SpectrometryMENG Shi-xian0DENG Fei-yue1YANG Yuan2SU Wei-han3MIN Xiao-fang4YONG Fu-zeng5College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, ChinaAnalysis Center, Hunan Non-ferrous Geological Exploration Institute, Changsha 410007, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, ChinaCollege of Chemistry and Chemical Engineering, Central South University, Changsha 410083, ChinaThe process of sample preparation is affected by many different factors in multi-element determination for lead-zinc ore. However, single-factor experiment design cannot provide a reasonable solution for the simultaneous optimization of multiple-factor experiments. In this study, minerals were dissolved by hydrochloric acid-nitric acid. The effect of digestion conditions was studied. Ratio and volume of the mixed acids as well as time and temperature of the digestion were optimized by orthogonal test and range analysis. The conditions of digestion were optimized as: ratio and volume of the mixed acids at 3:1 and 10 mL, respectively, time and temperature of the digestion of 120 min and 90℃, respectively. The contents of 15 major and trace elements (Pb, Zn, Cu, Mn, As, Ag, Bi, Cd, Co, Ni, Ga, In, Mo, Ge and Sb) were determined simultaneously by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). Under optimal conditions, the method was verified by certified national reference material GBW 07165. The results show that the precision (RSD, n=12) and accuracy are less than 5% for most elements, and the detection limit is 0.0019-0.048 μg/g. In addition, as the lead-zinc ore usually exits in the form of sulfide, the accuracy and feasibility of the method can be verified by a series of national standard sulfide materials. The results were consistent with the certified values within uncertainties. After using the proposed method to analyze large quantities of lead-zinc ore samples collected from Hunan, the qualification rates for standard samples and blind samples are 100% and 97%, respectively. This method optimizes the experimental conditions, and solves the complex problem of sample pretreatment. The method has many advantages, including low consumption of reagents, green environment and simultaneous determination of multi-elements, which indicates that it is an accurate and practical method to simultaneously determine the content of lead and zinc.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2015.01.006lead-zinc oremajor and trace elementsorthogonal testinductively coupled plasma-atomic emission spectrometry |
| spellingShingle | MENG Shi-xian DENG Fei-yue YANG Yuan SU Wei-han MIN Xiao-fang YONG Fu-zeng Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry Yankuang ceshi lead-zinc ore major and trace elements orthogonal test inductively coupled plasma-atomic emission spectrometry |
| title | Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_full | Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_fullStr | Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_full_unstemmed | Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_short | Simultaneous Determination of 15 Elements in Lead-Zinc Ore by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_sort | simultaneous determination of 15 elements in lead zinc ore by inductively coupled plasma atomic emission spectrometry |
| topic | lead-zinc ore major and trace elements orthogonal test inductively coupled plasma-atomic emission spectrometry |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2015.01.006 |
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