| Effects of organic matter fraction and compositional changes on distribution of cadmium and zinc in long-term polluted paddy soils | |
Zhou, Tong; Wu, Longhua; Luo, Yongming ; Christie, Peter
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| 发表期刊 | ENVIRONMENTAL POLLUTION
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| ISSN | 0269-7491 |
| 2018-01 | |
| 卷号 | 232页码:514-522 |
| 关键词 | Metal pollution Particulate organic matter Humic substances FTIR Functional groups |
| 研究领域 | Environmental Sciences |
| DOI | 10.1016/j.envpol.2017.09.081 |
| 产权排序 | [Zhou, Tong; Wu, Longhua; Luo, Yongming; Christie, Peter] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China |
| 作者部门 | 海岸带环境过程实验室 |
| 英文摘要 | Soil particulate organic matter (POM) has rapid turnover and metal enrichment, but the interactions between organic matter (OM) and metals have not been well studied. The present study aimed to investigate changes in the OM concentration and composition of the POM fraction and their corresponding effects on metal distribution and extractability in long-term polluted paddy soils. Soil 2000 53 gm POM size fractions had higher contents of C-H and C=O bonds, C-H/C=O ratios and concentrations of fulvic acid (FA), humic acid (HA), cadmium (Cd) and zinc (Zn) than the bulk soils. Cadmium and Zn stocks in soil POM fractions were 24.5-27.9% and 7.12-16.7%, respectively, and were more readily EDTA-extractable. Compared with the control soil, the 2000-250 gm POM size fractions had higher organic carbon concentrations and C/N ratios in the polluted soils. However, there were no significant differences in the contents in C-H and C=O bonds or C H/C=O ratios of POM fractions among the control, slightly and highly polluted soils. In accordance with the lower contents of C=O bonds and FA and HA concentrations, the Cd and Zn concentrations in 250-53 gm POM size fractions were lower than those in 2000-250 gm POM size fractions. Enrichment of Cd in POM fractions increased with increasing soil pollution level. These results support the view that changes in the OM concentration and the size and composition of POM fractions play a key role in determining the distribution of Cd and Zn in paddy soils. (C) 2017 Published by Elsevier Ltd. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China [41325003] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | HEAVY-METALS ; CONTAMINATED SOIL ; AGRICULTURAL SOILS ; SIZE FRACTIONS ; ARABLE SOILS ; PHYTOEXTRACTION ; COPPER ; CU ; DECOMPOSITION ; DYNAMICS |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000414881300055 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24407 |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Tong,Wu, Longhua,Luo, Yongming,et al. Effects of organic matter fraction and compositional changes on distribution of cadmium and zinc in long-term polluted paddy soils[J]. ENVIRONMENTAL POLLUTION,2018,232:514-522. |
| APA | Zhou, Tong,Wu, Longhua,Luo, Yongming,&Christie, Peter.(2018).Effects of organic matter fraction and compositional changes on distribution of cadmium and zinc in long-term polluted paddy soils.ENVIRONMENTAL POLLUTION,232,514-522. |
| MLA | Zhou, Tong,et al."Effects of organic matter fraction and compositional changes on distribution of cadmium and zinc in long-term polluted paddy soils".ENVIRONMENTAL POLLUTION 232(2018):514-522. |
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