Freeze-thaw controlled aggregation mechanism of humic acid-coated goethite: Implications for organic carbon preservation
文献类型：期刊论文
| 作者 | Wu, Sensen2,4; Liu, Chengshuai2,4; Li, Xiaoguang1; Xiao, Baohua2,4; Hu, Qingyang3 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2022-01-15 |
| 卷号 | 406页码:7 |
| ISSN号 | 0016-7061 |
| 关键词 | Goethite Humic acid Aggregates Freeze-thaw Ice exclusion Carbon |
| DOI | 10.1016/j.geoderma.2021.115514 |
| 英文摘要 | Organic carbon sequestered in soil aggregate contributes significantly to the carbon preservation on the earth's surface. However, the turnover of soil aggregate in high latitudes and cold zones is strongly affected by the frequency of freeze-thaw cycles and may be disturbed by climate change. Although the effects of recurrent freeze-thaw cycles on the size, structure, and stability of soil aggregate have been well studied, the aggregation of individual mineral particles adsorbed by organic carbon and its mechanism are not yet conclusive. Here, we report that more than 97 wt% of the humic acid-coated goethite (goethite-HA) particles can aggregate into aggregates of different sizes and morphologies through one freeze-thaw cycle (freezing at -24 degrees C for 12 h and thawing at 4 degrees C for 12 h). Combining electron microscopy, infrared absorption spectroscopy and thermogravimetric analysis, we revealed that goethite-HA particles could strongly complex with each other after one freeze-thaw cycle. Compared with previous studies, our results showed that both electrostatic repulsion and steric hindrance (known to prevent aggregation) were overcome by the internal thrust of ice exclusion during freezing, then goethite-HA particles could be interconnected through the carboxyl-iron and hydrogen bonding to form aggregates. We believe that aggregates formed during the freeze-thaw cycles in soils rich in iron (hydr) oxides can serve as shelters for soil organic carbon and may reduce CO2 emissions in these soils. |
| WOS关键词 | SIZE DISTRIBUTION ; SOIL ; STABILITY ; MATTER ; SURFACE ; ADSORPTION ; IRON ; CYCLES ; SUBSTANCES ; FRACTIONS |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB40020400] ; National Science Foundation of China[41773147] ; National Science Foundation of China[41273149] ; CAEP Research Project[CX20210048] ; Tencent Xplorer Prize ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; NSAF[U1530402] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000708893700010 |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; CAEP Research Project ; CAEP Research Project ; Tencent Xplorer Prize ; Tencent Xplorer Prize ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; NSAF ; NSAF ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; CAEP Research Project ; CAEP Research Project ; Tencent Xplorer Prize ; Tencent Xplorer Prize ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; NSAF ; NSAF ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; CAEP Research Project ; CAEP Research Project ; Tencent Xplorer Prize ; Tencent Xplorer Prize ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; NSAF ; NSAF ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; CAEP Research Project ; CAEP Research Project ; Tencent Xplorer Prize ; Tencent Xplorer Prize ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; NSAF ; NSAF |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102974]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Xiao, Baohua; Hu, Qingyang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 4.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Sensen,Liu, Chengshuai,Li, Xiaoguang,et al. Freeze-thaw controlled aggregation mechanism of humic acid-coated goethite: Implications for organic carbon preservation[J]. GEODERMA,2022,406:7. |
| APA | Wu, Sensen,Liu, Chengshuai,Li, Xiaoguang,Xiao, Baohua,&Hu, Qingyang.(2022).Freeze-thaw controlled aggregation mechanism of humic acid-coated goethite: Implications for organic carbon preservation.GEODERMA,406,7. |
| MLA | Wu, Sensen,et al."Freeze-thaw controlled aggregation mechanism of humic acid-coated goethite: Implications for organic carbon preservation".GEODERMA 406(2022):7. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。