Determination of Trace Selenium in Groundwater by DRC-ICP-MS
BACKGROUND Generally, the content of Se in groundwater is lower than 1μg/L. Mass interferences caused by polyatomic species and low ionization degree can seriously affect the accuracy for determination of trace and ultratrace Se in groundwater by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2019-01-01
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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.201804200049 |
| _version_ | 1797953816246616064 |
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| author | LIU Jin-wei LIU Xue-song BIAN Chao ZHANG Tao ZHANG Zhi-yin WEI Jian-peng |
| author_facet | LIU Jin-wei LIU Xue-song BIAN Chao ZHANG Tao ZHANG Zhi-yin WEI Jian-peng |
| author_sort | LIU Jin-wei |
| collection | DOAJ |
| description | BACKGROUND Generally, the content of Se in groundwater is lower than 1μg/L. Mass interferences caused by polyatomic species and low ionization degree can seriously affect the accuracy for determination of trace and ultratrace Se in groundwater by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Moreover, the current detection limit is higher than required for practical purposes. OBJECTIVES To establish DRC-ICP-MS method for determination of trace selenium in groundwater. METHODS Ethanol was used as a signal enhancer, methane was used as a reaction gas. The factors that affect different mass determination, including methane flow, ethanol content, atomizing gas flow rate, low mass interception (RPq), RF generator (Rf) power, ion residence time were discussed and optimized. RESULTS Ethanol can increase response values, whereas ethanol and methane can obviously eliminate the mass spectrometry interference. Under the optimized conditions, except 74Se, calibration curves show a good relationship (R > 0.9996). The method detection limits are 0.02-0.03μg/L, the relative standard deviation (RSD, n=5) is lower than 2%, and the average spiked recovery is 95.7%. CONCLUSIONS The method has simple pretreatment and single equipment, which can meet the requirements for determination of trace selenium in large quantities of groundwater. |
| first_indexed | 2024-04-10T23:08:04Z |
| format | Article |
| id | doaj.art-9bf574937db440629fb59940093488fb |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:08:04Z |
| publishDate | 2019-01-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-9bf574937db440629fb59940093488fb2023-01-13T10:08:24ZengScience Press, PR ChinaYankuang ceshi0254-53572019-01-01381859110.15898/j.cnki.11-2131/td.201804200049ykcs-38-1-85Determination of Trace Selenium in Groundwater by DRC-ICP-MSLIU Jin-wei0LIU Xue-song1BIAN Chao2ZHANG Tao3ZHANG Zhi-yin4WEI Jian-peng5Center of Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051, ChinaCenter of Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051, ChinaCenter of Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051, ChinaCenter of Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051, ChinaCenter of Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051, ChinaCenter of Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051, ChinaBACKGROUND Generally, the content of Se in groundwater is lower than 1μg/L. Mass interferences caused by polyatomic species and low ionization degree can seriously affect the accuracy for determination of trace and ultratrace Se in groundwater by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Moreover, the current detection limit is higher than required for practical purposes. OBJECTIVES To establish DRC-ICP-MS method for determination of trace selenium in groundwater. METHODS Ethanol was used as a signal enhancer, methane was used as a reaction gas. The factors that affect different mass determination, including methane flow, ethanol content, atomizing gas flow rate, low mass interception (RPq), RF generator (Rf) power, ion residence time were discussed and optimized. RESULTS Ethanol can increase response values, whereas ethanol and methane can obviously eliminate the mass spectrometry interference. Under the optimized conditions, except 74Se, calibration curves show a good relationship (R > 0.9996). The method detection limits are 0.02-0.03μg/L, the relative standard deviation (RSD, n=5) is lower than 2%, and the average spiked recovery is 95.7%. CONCLUSIONS The method has simple pretreatment and single equipment, which can meet the requirements for determination of trace selenium in large quantities of groundwater.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201804200049groundwatertrace sedynamic reaction cellinductively coupled plasma-mass spectrometryethanolmethane |
| spellingShingle | LIU Jin-wei LIU Xue-song BIAN Chao ZHANG Tao ZHANG Zhi-yin WEI Jian-peng Determination of Trace Selenium in Groundwater by DRC-ICP-MS Yankuang ceshi groundwater trace se dynamic reaction cell inductively coupled plasma-mass spectrometry ethanol methane |
| title | Determination of Trace Selenium in Groundwater by DRC-ICP-MS |
| title_full | Determination of Trace Selenium in Groundwater by DRC-ICP-MS |
| title_fullStr | Determination of Trace Selenium in Groundwater by DRC-ICP-MS |
| title_full_unstemmed | Determination of Trace Selenium in Groundwater by DRC-ICP-MS |
| title_short | Determination of Trace Selenium in Groundwater by DRC-ICP-MS |
| title_sort | determination of trace selenium in groundwater by drc icp ms |
| topic | groundwater trace se dynamic reaction cell inductively coupled plasma-mass spectrometry ethanol methane |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201804200049 |
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