Molecular-level understanding of malic acid retention mechanisms in ternary kaolinite-Fe(III)-malic acid systems: The importance of Fe speciation
文献类型: 外文期刊
第一作者: Yang, Jianjun
作者: Yang, Jianjun;Yang, Jianjun;Sparks, Donald;Liu, Jin;Hu, Yongfeng;Rumpel, Cornelia;Bolan, Nanthi;Bolan, Nanthi
作者机构:
关键词: Carbon sequestration;Mineral-OC interaction;LMWOAs;Iron speciation;EXAFS
期刊名称:CHEMICAL GEOLOGY ( 影响因子:4.015; 五年影响因子:4.426 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Multivalent cation interaction and mineral association play a vital role in organic carbon (OC) stability in tropical soils. However, the retention mechanisms of OC in mineral-cation-OC systems remain largely unclear at the molecular level. Of all OC forms, low molecular weight organic acids (LMWOAs) are readily biodegradable. Given the general acidic conditions and dominance of kaolinite in tropical soils, we investigated the retention mechanisms of malic acid (MA) in kaolinite-Fe(III)-MA systems with various Fe/MA molar ratios at pH similar to 3.5 using Fe K-edge extended X-ray absorption fine structure (EXAFS) spectroscopy. Our results indicated the formed ferrihydrite mainly contributed to the enhanced MA retention through adsorption and/or coprecipitation at high Fe/MA molar ratios in kaolinite-Fe(III)-MA systems relative to kaolinite-MA systems. With the decrease of Fe/MA molar ratios, ternary complexation of MA with kaolinite via a tetrahedral Fe bridge occurred in kaolinite-Fe(III)-MA systems. This study highlighted the significant impact of Fe speciation on MA retention mechanisms in kaolinite-Fe(III)-MA systems under acidic conditions, and clearly showed the impact of ferrihydrite-induced adsorption/coprecipitation and Fe-bridged ternary complexation on MA retention in ternary kaolinite-Fe(III)MA systems, which will enhance our understanding of the dynamics of MA and other LMWOAs in tropical soils. (C) 2017 Elsevier B.V. Al rights reserved.
分类号: P59
- 相关文献
作者其他论文 更多>>
-
Advances in aggregation-induced emission fluorescent probes for reactive sulfur species detection
作者:Zhang, Qianqian;Zhang, Zezhi;Liu, Jin;Song, Ajuan;Li, Chengwei;Yang, Xiaopeng;Zhang, Di;Ye, Yong
关键词:Fluorescent probe; Aggregation-induced emission; Reactive Sulfur species; Detection
-
Effect of straw decomposition on hexavalent chromium removal by straw: Significant roles of surface potential and dissolved organic matter
作者:Xia, Xing;Zhang, Xingbin;Liu, Peng;Zhang, Yongyi;Hou, Tingting;Zhang, Ranran;He, Jiehong;Wu, Xiangwei;Xia, Xing;Fang, Guodong;Yang, Jianjun
关键词:Heavy metal; Straw return; Straw decomposition; Adsorption; XAS
-
Reducing Cd Uptake by Wheat Through Rhizosphere Soil N-C Cycling and Bacterial Community Modulation by Urease-Producing Bacteria and Organo-Fe Hydroxide Coprecipitates
作者:Zhang, Junqing;Tang, Shuangjiao;Wei, Hao;Yao, Lunguang;Chen, Zhaojin;Han, Hui;Ji, Mingfei;Han, Hui;Yang, Jianjun
关键词:cadmium immobilization; urease-producing bacteria; organo-Fe hydroxide coprecipitates; wheat; rhizosphere microbiome
-
ZmYSL2 affects the physiological function of iron deficiency in maize
作者:Li, Binyang;Zhang, Shuhao;Liu, Lisong;Qi, Jingxiao;Zhao, Wei;Su, Yulu;Wang, Yarong;Liu, Jin;Liu, Dan;Wu, Ling;Zhang, Xiao;Luo, Bowen;Gao, Shiqiang;Gao, Duojiang;Gao, Shibin;Li, Binyang;Zhang, Shuhao;Liu, Lisong;Qi, Jingxiao;Zhao, Wei;Su, Yulu;Wang, Yarong;Liu, Jin;Liu, Dan;Wu, Ling;Zhang, Xiao;Luo, Bowen;Gao, Shiqiang;Gao, Duojiang;Gao, Shibin;Li, Binyang;Zhang, Shuhao;Liu, Lisong;Qi, Jingxiao;Zhao, Wei;Su, Yulu;Wang, Yarong;Liu, Jin;Liu, Dan;Wu, Ling;Zhang, Xiao;Luo, Bowen;Gao, Shiqiang;Gao, Duojiang;Gao, Shibin;Wang, Yikai;Hu, Hongmei;Hu, Hongmei;Zhuo, Shihai
关键词:Iron deficiency adaptation; Physiological function;
Zea mays L.;ZmYSL2 -
Green solvent-based high-throughput dispersive liquid-liquid microextraction for detecting strobilurin fungicides in environmental water samples
作者:Liu, Jin;Pan, Wei;Li, Suzhen;Li, Li;Liu, Jin;Jing, Xu;Nie, Yuanjun;Bi, Xinyuan
关键词:High-throughput; Self-separation; Semi-automatization; Renewable solvents; Environmental monitoring
-
Semi-automatic emulsification liquid-liquid microextraction with deep eutectic solvent for the determination of strobilurin fungicides in food samples
作者:Wang, Yuxin;Wang, Yulin;Zhang, Yawen;Zheng, Xiaojiao;Liu, Jin;Jing, Xu;Wang, Yuxin;Fu, Jizhen;Li, Suzhen;Li, Li
关键词:Emulsification liquid-liquid microextraction; Deep eutectic solvent; Strobilurin fungicides; Semi-automation microextraction; Green analytical chemistry
-
Combining rape biochar with hydroxyapatite: An approach to reduce Cd availability and uptake in maize while enhancing bacterial abundance in alkaline contaminated soil
作者:Sun, Meili;Darma, Aminu;Yang, Jianjun;Wang, Yihao;Han, Hui;Feng, Ya;Yan, Jinwei;Han, Hui;Darma, Aminu
关键词:Cadmium; Bacterial community; Hydroxyapatite; Maize; Rape biochar