| Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau | |
Li, Leiming1,2; Wu, Jun1,2,3; Lu, Jian4 ; Min, Xiuyun1,2
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| 发表期刊 | GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
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| ISSN | 1467-7873 |
| 2021-08-01 | |
| 卷号 | 21期号:3页码:9 |
| 关键词 | freeze-thaw cycle Pb and Cr fractions ecological risk the northeastern Qinghai-Tibet Plateau |
| DOI | 10.1144/geochem2021-029 |
| 通讯作者 | Wu, Jun(wujunlisa@163.com) |
| 英文摘要 | Simulation experiments were conducted using soils in the northeastern Qinghai-Tibet Plateau to explore the effects of freeze-thaw cycles on soil physicochemical properties, Pb and Cr distribution, and fraction transformation. Soils were incubated at -15 degrees C for 24 h and at 5 degrees C for 24 h to complete a freeze-thaw cycle. The soil physicochemical properties and fractions of Pb and Cr were analyzed after serial freeze-thaw treatments. The results showed that different freeze-thaw cycles and water content affected soil physicochemical properties and fractions of Pb and Cr to some extent. The cation exchange capacity increased significantly in agricultural and pastoral soils after five freeze-thaw cycles. The sand proportion of soil in an urban area decreased at 60 cycles. Freeze-thaw cycles did not change the functional groups and mineral constituents of the soils. The infrared peaks of soils with different freeze-thaw conditions were very similar. The freeze-thaw treatment influenced the mobility, chemical fractions of Pb and ecological risk in most of the soils. The exchangeable Pb in agricultural and pastoral areas increased from 0.19 to 1.52/0.90% after 5/10 freeze-thaw cycles with 60% water content. The ecological values of Pb in urban soil were 8.32/7.38% higher at 10/15 freeze-thaw cycles compared with the control treatment. Hence, these findings provide useful information on physicochemical properties and fraction transformation of Pb and Cr in soils undergoing freeze-thaw cycles, and offer an additional insight on Pb and Cr behaviors in cold and freezing environments. Thematic collection: This article is part of the Hydrochemistry related to exploration and environmental issues collection available at: |
| 资助机构 | Taishan Scholar Program of Shandong Province ; Youth Innovation Team Project for Talent Introduction and Cultivation in Universities of Shandong Province ; Natural Science Foundation of Qinghai Province ; Thousand Talents Plan of Qinghai Province ; Two-Hundred Talents Plan of Yantai |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | DISSOLVED ORGANIC-MATTER ; AGGREGATE STABILITY ; NITROGEN DYNAMICS ; HEAVY-METALS ; MOISTURE ; POLLUTION ; REMOVAL ; TEXTURE ; CARBON ; RISKS |
| 研究领域[WOS] | Geochemistry & Geophysics |
| WOS记录号 | WOS:000680860100003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/29604 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Wu, Jun |
| 作者单位 | 1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China 2.Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Qinghai, Peoples R China 3.Ludong Univ, Sch Resources & Environm Engn, Yantai, Yantai 264025, Shandong, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Leiming,Wu, Jun,Lu, Jian,et al. Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau[J]. GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS,2021,21(3):9. |
| APA | Li, Leiming,Wu, Jun,Lu, Jian,&Min, Xiuyun.(2021).Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau.GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS,21(3),9. |
| MLA | Li, Leiming,et al."Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau".GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS 21.3(2021):9. |
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