Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting
BACKGROUND The determination of iodine in geochemical samples by inductively coupled plasma-mass spectrometry (ICP-MS) is treated mainly by closed sample melting, mixed acid solution, alkali fusion and semi-melting method. However, due to the complex existent morphology of iodine in soil and sedimen...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Science Press, PR China
2022-07-01
|
| Series: | Yankuang ceshi |
| Subjects: | |
| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202106090074 |
| _version_ | 1797953997876756480 |
|---|---|
| author | HE Xiuhui TANG Shuaishuai CHENG Jiang SHI Youchang LU Qianshu WANG Yinjian LAN Mingguo |
| author_facet | HE Xiuhui TANG Shuaishuai CHENG Jiang SHI Youchang LU Qianshu WANG Yinjian LAN Mingguo |
| author_sort | HE Xiuhui |
| collection | DOAJ |
| description | BACKGROUND The determination of iodine in geochemical samples by inductively coupled plasma-mass spectrometry (ICP-MS) is treated mainly by closed sample melting, mixed acid solution, alkali fusion and semi-melting method. However, due to the complex existent morphology of iodine in soil and sediment samples, including periodate, iodate and iodide ions, and the first ionization energy of iodine being high as a halogen group element, there are problems such as incomplete dissolution, strong memory effect and poor precision during sample processing and measurement. OBJECTIVES To improve the determination of iodine in geochemical samples by ICP-MS. METHODS The samples were treated by sodium carbonate-zinc oxide semi-melting method, extracted with boiling water-ethanol, and separated by 732 cation exchange resin. Following this, iodine in the solution was determined by ICP-MS using an internal standard method. RESULTS The optimized detection limit of iodine was 0.045μg/g, the lower limit of detection was 0.15μg/g. The precision (RSD, n=12) and the accuracy (△logC) of the method were ≤5.93% and ≤0.01, respectively, which satisfied the analysis standards of geochemical survey sample. CONCLUSIONS This method meets the requirements of sample analysis for geochemical investigation, and can be used for the analysis of iodine in large quantities of soil and sediment samples. |
| first_indexed | 2024-04-10T23:11:53Z |
| format | Article |
| id | doaj.art-13ec95f6ba274934bbdeac4f32315f6a |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:11:53Z |
| publishDate | 2022-07-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-13ec95f6ba274934bbdeac4f32315f6a2023-01-13T05:06:15ZengScience Press, PR ChinaYankuang ceshi0254-53572022-07-0141460661310.15898/j.cnki.11-2131/td.202106090074yk202106090074Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-meltingHE Xiuhui0TANG Shuaishuai1CHENG Jiang2SHI Youchang3LU Qianshu4WANG Yinjian5LAN Mingguo6Kunming Center of Natural Resources Comprehensive Survey, China Geological Survey, Kunming 650100, ChinaKunming Center of Natural Resources Comprehensive Survey, China Geological Survey, Kunming 650100, ChinaChengdu Center, China Geological Survey, Chengdu 610081, ChinaKunming Center of Natural Resources Comprehensive Survey, China Geological Survey, Kunming 650100, ChinaKunming Center of Natural Resources Comprehensive Survey, China Geological Survey, Kunming 650100, ChinaKunming Center of Natural Resources Comprehensive Survey, China Geological Survey, Kunming 650100, ChinaKunming Center of Natural Resources Comprehensive Survey, China Geological Survey, Kunming 650100, ChinaBACKGROUND The determination of iodine in geochemical samples by inductively coupled plasma-mass spectrometry (ICP-MS) is treated mainly by closed sample melting, mixed acid solution, alkali fusion and semi-melting method. However, due to the complex existent morphology of iodine in soil and sediment samples, including periodate, iodate and iodide ions, and the first ionization energy of iodine being high as a halogen group element, there are problems such as incomplete dissolution, strong memory effect and poor precision during sample processing and measurement. OBJECTIVES To improve the determination of iodine in geochemical samples by ICP-MS. METHODS The samples were treated by sodium carbonate-zinc oxide semi-melting method, extracted with boiling water-ethanol, and separated by 732 cation exchange resin. Following this, iodine in the solution was determined by ICP-MS using an internal standard method. RESULTS The optimized detection limit of iodine was 0.045μg/g, the lower limit of detection was 0.15μg/g. The precision (RSD, n=12) and the accuracy (△logC) of the method were ≤5.93% and ≤0.01, respectively, which satisfied the analysis standards of geochemical survey sample. CONCLUSIONS This method meets the requirements of sample analysis for geochemical investigation, and can be used for the analysis of iodine in large quantities of soil and sediment samples.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202106090074inductively coupled plasma-mass spectrometrygeochemical samplena2co3-znocation exchange resiniodine |
| spellingShingle | HE Xiuhui TANG Shuaishuai CHENG Jiang SHI Youchang LU Qianshu WANG Yinjian LAN Mingguo Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting Yankuang ceshi inductively coupled plasma-mass spectrometry geochemical sample na2co3-zno cation exchange resin iodine |
| title | Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting |
| title_full | Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting |
| title_fullStr | Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting |
| title_full_unstemmed | Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting |
| title_short | Determination of Iodine in Geochemical Samples by ICP-MS with Sodium Carbonate-Zinc Oxide Semi-melting |
| title_sort | determination of iodine in geochemical samples by icp ms with sodium carbonate zinc oxide semi melting |
| topic | inductively coupled plasma-mass spectrometry geochemical sample na2co3-zno cation exchange resin iodine |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202106090074 |
| work_keys_str_mv | AT hexiuhui determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting AT tangshuaishuai determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting AT chengjiang determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting AT shiyouchang determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting AT luqianshu determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting AT wangyinjian determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting AT lanmingguo determinationofiodineingeochemicalsamplesbyicpmswithsodiumcarbonatezincoxidesemimelting |