Opposite influences of mineral-associated and dissolved organic matter on the transport of hydroxyapatite nanoparticles through soil and aggregates
文献类型：期刊论文
| 作者 | Zhuang, Jie1,2; Xu, Shuang1,3; Chen, Xijuan1 |
| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 171页码:153-160 |
| 关键词 | Humic acid Organic matter XDLVO Nanoparticle transport, soil aggregates |
| ISSN号 | 0013-9351 |
| DOI | 10.1016/j.envres.2019.01.020 |
| 英文摘要 | The mechanism by which soil organic matter (SOM) controls nanoparticle transport through natural soils is unclear. In this study, we distinguished the specific effects of two primary SOM fractions, mineral-associated organic matter (MOM) and dissolved organic matter (DOM), on the transport of hydroxyapatite nanoparticles (nHAP) through a loamy soil under the conditions of saturated steady flow and environmentally relevant solution chemistry (1 mM NaCl at pH 7). The results showed that MOM could inhibit the transport of nHAP by decreasing electrostatic repulsion and increasing mechanical straining and hydrophobic interactions. Specifically, the presence of MOM reduced the mobility of nHAP in the bulk soil and its macroaggregates by similar to 4 fold and similar to 6 fold, respectively, and this hindered effect became further conspicuous in microaggregates (similar to 36 fold decrease). An analysis of extended Derjaguin-Landau-Vervey-Overbeek (abbreviated as XDLVO) interactions indicated that MOM could decrease the primary energy barrier (Phi(max1)), primary minimum (Phi(min1)), and secondary minimum (Phi(min2)) to promote nHAP attachment. Conversely, DOM (10-50 mg L-1) favored nHAP mobility due to an increase in electrostatic repulsion among nHAP particles and between nHAP and soil surfaces. Pre-flushing soil with DOM (causing DOM sorption on soil) increased nHAP mobility by similar to 2 fold in the bulk soil and its macroaggregates, and this facilitated effect was furthered in microaggregates (similar to 11 fold increase). The results of XDLVO interactions showed that DOM increased Phi(max1), Phi(min1), and Phi(min2), producing an unfavorable effect on nHAP attachment. Mass recovery data revealed that the MOM-hindered effect was stronger than the DOM-facilitated effect on nHAP transport. This study suggested that changing SOM fractions could control the mobility of nanoparticles in the subsurface considerably. |
| 资助项目 | National Natural Science Foundation of China[31500437] ; National Natural Science Foundation of China[41730858] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB14020204] |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| WOS记录号 | WOS:000460081300017 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://210.72.129.5/handle/321005/123935]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Zhuang, Jie |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Pollut Ecol & Environm Engn, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China 2.Univ Tennessee, Dept Biosyst Engn & Soil Sci, Ctr Environm Biotechnol, Knoxville, TN 37996 USA 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhuang, Jie,Xu, Shuang,Chen, Xijuan. Opposite influences of mineral-associated and dissolved organic matter on the transport of hydroxyapatite nanoparticles through soil and aggregates[J]. ENVIRONMENTAL RESEARCH,2019,171:153-160. |
| APA | Zhuang, Jie,Xu, Shuang,&Chen, Xijuan.(2019).Opposite influences of mineral-associated and dissolved organic matter on the transport of hydroxyapatite nanoparticles through soil and aggregates.ENVIRONMENTAL RESEARCH,171,153-160. |
| MLA | Zhuang, Jie,et al."Opposite influences of mineral-associated and dissolved organic matter on the transport of hydroxyapatite nanoparticles through soil and aggregates".ENVIRONMENTAL RESEARCH 171(2019):153-160. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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