Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry
Bauxite has strong chemical stability, which often contains a small amount of corundum. Therefore, samples are classified to refractory samples by the method of inductive coupled plasma-optical emission spectrometry. The routine 4 acids digestion system works well for non-corundum bearing bauxite, b...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2013-09-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/id/b77e549e-dbd2-49c3-96ce-9d0075b681e6 |
| _version_ | 1811167529088843776 |
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| author | WANG Yan SUN Luo-xin ZHANG Fan ZHANG Hua CHEN Zhi-hui |
| author_facet | WANG Yan SUN Luo-xin ZHANG Fan ZHANG Hua CHEN Zhi-hui |
| author_sort | WANG Yan |
| collection | DOAJ |
| description | Bauxite has strong chemical stability, which often contains a small amount of corundum. Therefore, samples are classified to refractory samples by the method of inductive coupled plasma-optical emission spectrometry. The routine 4 acids digestion system works well for non-corundum bearing bauxite, but cannot completely digest the high Al and corundum bearing bauxite and simultaneously determine Si. Four elements of Si, Al, Fe and Ti in bauxite were simultaneously quantified by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) after the samples were digested in a Nickel Crucible with NaOH-Na2O2 and acid treated. The melting effect, dosage of Na2O2, temperature, elementary spectral lines, coexisting ions, matrix interference and elimination of melting samples are discussed in this paper. The results show that corundum bearing bauxite samples are completely melted with 3.0 g NaOH and 1.0 g Na2O2 at 650-700℃ for 10 minutes. The standard solution prepared by national bauxite standard material is good to eliminate the matrix interferences for Si, Al, Fe and Ti measurements. The detection limits are 0.0025%-0.063%, and the precisions (RSD, n=11) are 0.15%-3.05%. The measured values of national standard materials were consistent with the certified values, and the measured values of actual samples were consistent with the values by the other methods. This method has the advantages of completely decomposing the sample, having a short digesting time, is simple for analysis procedure, rapid, accurate, has a wide range for determination content and is especially suitable for high Al or corundum bearing bauxite samples. |
| first_indexed | 2024-04-10T16:10:54Z |
| format | Article |
| id | doaj.art-d738a598da7b4724804b669db12c5661 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T16:10:54Z |
| publishDate | 2013-09-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-d738a598da7b4724804b669db12c56612023-02-10T01:20:05ZengScience Press, PR ChinaYankuang ceshi0254-53572013-09-01325719723ykcs-32-5-719Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission SpectrometryWANG Yan0SUN Luo-xin1ZHANG Fan2ZHANG Hua3CHEN Zhi-hui4Henan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaBauxite has strong chemical stability, which often contains a small amount of corundum. Therefore, samples are classified to refractory samples by the method of inductive coupled plasma-optical emission spectrometry. The routine 4 acids digestion system works well for non-corundum bearing bauxite, but cannot completely digest the high Al and corundum bearing bauxite and simultaneously determine Si. Four elements of Si, Al, Fe and Ti in bauxite were simultaneously quantified by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) after the samples were digested in a Nickel Crucible with NaOH-Na2O2 and acid treated. The melting effect, dosage of Na2O2, temperature, elementary spectral lines, coexisting ions, matrix interference and elimination of melting samples are discussed in this paper. The results show that corundum bearing bauxite samples are completely melted with 3.0 g NaOH and 1.0 g Na2O2 at 650-700℃ for 10 minutes. The standard solution prepared by national bauxite standard material is good to eliminate the matrix interferences for Si, Al, Fe and Ti measurements. The detection limits are 0.0025%-0.063%, and the precisions (RSD, n=11) are 0.15%-3.05%. The measured values of national standard materials were consistent with the certified values, and the measured values of actual samples were consistent with the values by the other methods. This method has the advantages of completely decomposing the sample, having a short digesting time, is simple for analysis procedure, rapid, accurate, has a wide range for determination content and is especially suitable for high Al or corundum bearing bauxite samples.http://www.ykcs.ac.cn/en/article/id/b77e549e-dbd2-49c3-96ce-9d0075b681e6bauxitesiliconaluminumirontitaniuminductively coupled plasma-atomic emission spectrometrysodium hydroxidesodium peroxide |
| spellingShingle | WANG Yan SUN Luo-xin ZHANG Fan ZHANG Hua CHEN Zhi-hui Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry Yankuang ceshi bauxite silicon aluminum iron titanium inductively coupled plasma-atomic emission spectrometry sodium hydroxide sodium peroxide |
| title | Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_full | Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_fullStr | Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_full_unstemmed | Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_short | Determination of Si, Al, Fe and Ti in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry |
| title_sort | determination of si al fe and ti in bauxite by inductively coupled plasma atomic emission spectrometry |
| topic | bauxite silicon aluminum iron titanium inductively coupled plasma-atomic emission spectrometry sodium hydroxide sodium peroxide |
| url | http://www.ykcs.ac.cn/en/article/id/b77e549e-dbd2-49c3-96ce-9d0075b681e6 |
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