Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield
The Hg isotopic ratios of coal, dustfall and topsoil from coal fire area No.9 in Wuda coalfield were determined by multiple-collector inductively coupled plasma-mass spectrometry(MC-ICPMS)to explore the possible coal seam source of surface Hg in coal fire areas.The findings were that the <i>δ&...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2021-12-01
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| Series: | 矿业科学学报 |
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| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.06.002 |
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| author | Li Shan Li Chunhui Liang Handong Cao Qingyi Gao Xiulong |
| author_facet | Li Shan Li Chunhui Liang Handong Cao Qingyi Gao Xiulong |
| author_sort | Li Shan |
| collection | DOAJ |
| description | The Hg isotopic ratios of coal, dustfall and topsoil from coal fire area No.9 in Wuda coalfield were determined by multiple-collector inductively coupled plasma-mass spectrometry(MC-ICPMS)to explore the possible coal seam source of surface Hg in coal fire areas.The findings were that the <i>δ</i><sup>202</sup>Hg of coal, dustfall and topsoil were -1.98 ‰, -1.30 ‰ and -1.26 ‰, respectively, which showed a significant mass-dependent fractionation(MDF)characteristics.And there were slightly negative anomaly mass-independent fractionation(MIF)values of surface soil, such as dustfall(<i>Δ</i><sup>199</sup>Hg、<i>Δ</i><sup>201</sup>Hg: -0.13 ‰、-0.11 ‰)and topsoil(<i>Δ</i><sup>199</sup>Hg、<i>Δ</i><sup>201</sup>Hg: -0.11 ‰、-0.10 ‰).A comparative analysis of the characteristics of Hg isotopic showed that the values of surface soil(<i>δ</i><sup>200</sup>Hg、<i>δ</i><sup>202</sup>Hg、<i>Δ</i><sup>200</sup>Hg)were all between the No.9 coal seam and the No.10 seam, and closer to the former, which indicated that the Hg source of surface soil in coalfire area No.9 was coal seam No.9 rather than No.10.The <i>δ</i><sup>202</sup>Hg of dustfall was more negative than that of coal seam No.9, which was caused not only by the kinetic fractionation effect of burning and heating process but also by the geologic chromatography effect of migration process in crack and hold.Surface sample Hg isotopes characterizations can be used to distinguish coal seam Hg and then identify the burning coal seam. |
| first_indexed | 2024-04-13T14:46:31Z |
| format | Article |
| id | doaj.art-d79675a37d2c4d329f8debb3dff73063 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-13T14:46:31Z |
| publishDate | 2021-12-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-d79675a37d2c4d329f8debb3dff730632022-12-22T02:42:45ZengEmergency Management Press矿业科学学报2096-21932021-12-016664265010.19606/j.cnki.jmst.2021.06.002Traceability analysis of dustfall mercury and topsoil mercury in Wuda CoalfieldLi Shan0Li Chunhui1Liang Handong2Cao Qingyi3Gao Xiulong4State Key Laboratory of CoalResources and Safe Mining, Beijing 100083, ChinaMOE Key Laboratory of Environmental Remediation and Ecological Health, Zhejiang University, Hangzhou Zhejiang 310058State Key Laboratory of CoalResources and Safe Mining, Beijing 100083, ChinaState Key Laboratory of CoalResources and Safe Mining, Beijing 100083, ChinaState Key Laboratory of CoalResources and Safe Mining, Beijing 100083, ChinaThe Hg isotopic ratios of coal, dustfall and topsoil from coal fire area No.9 in Wuda coalfield were determined by multiple-collector inductively coupled plasma-mass spectrometry(MC-ICPMS)to explore the possible coal seam source of surface Hg in coal fire areas.The findings were that the <i>δ</i><sup>202</sup>Hg of coal, dustfall and topsoil were -1.98 ‰, -1.30 ‰ and -1.26 ‰, respectively, which showed a significant mass-dependent fractionation(MDF)characteristics.And there were slightly negative anomaly mass-independent fractionation(MIF)values of surface soil, such as dustfall(<i>Δ</i><sup>199</sup>Hg、<i>Δ</i><sup>201</sup>Hg: -0.13 ‰、-0.11 ‰)and topsoil(<i>Δ</i><sup>199</sup>Hg、<i>Δ</i><sup>201</sup>Hg: -0.11 ‰、-0.10 ‰).A comparative analysis of the characteristics of Hg isotopic showed that the values of surface soil(<i>δ</i><sup>200</sup>Hg、<i>δ</i><sup>202</sup>Hg、<i>Δ</i><sup>200</sup>Hg)were all between the No.9 coal seam and the No.10 seam, and closer to the former, which indicated that the Hg source of surface soil in coalfire area No.9 was coal seam No.9 rather than No.10.The <i>δ</i><sup>202</sup>Hg of dustfall was more negative than that of coal seam No.9, which was caused not only by the kinetic fractionation effect of burning and heating process but also by the geologic chromatography effect of migration process in crack and hold.Surface sample Hg isotopes characterizations can be used to distinguish coal seam Hg and then identify the burning coal seam.http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.06.002coal-firemercury isotopesindependent isotope fractionationmass-independent isotope fractionationgeochemical tracer |
| spellingShingle | Li Shan Li Chunhui Liang Handong Cao Qingyi Gao Xiulong Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield 矿业科学学报 coal-fire mercury isotopes independent isotope fractionation mass-independent isotope fractionation geochemical tracer |
| title | Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield |
| title_full | Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield |
| title_fullStr | Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield |
| title_full_unstemmed | Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield |
| title_short | Traceability analysis of dustfall mercury and topsoil mercury in Wuda Coalfield |
| title_sort | traceability analysis of dustfall mercury and topsoil mercury in wuda coalfield |
| topic | coal-fire mercury isotopes independent isotope fractionation mass-independent isotope fractionation geochemical tracer |
| url | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.06.002 |
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