Li, Leiming1,2; Wu, Jun1,2,3; Lu, Jian4
; Min, Xiuyun1,2发表期刊GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
ISSN1467-7873
2021-08-01
卷号21期号:3页码:9
关键词freeze-thaw cyclePb and Crfractionsecological riskthe northeastern Qinghai-Tibet Plateau
DOI10.1144/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.cnhttp://ir.yic.ac.cn/handle/133337/29604
专题中科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
中科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 7714Li, 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.
APALi, 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.
MLALi, 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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