Impact of De-Ashing Humic Acid and Humin on Organic Matter Structural   Properties and Sorption Mechanisms of Phenanthrene

doi:10.1021/es2003149

CORC > 北京大学 > 城市与环境学院

	Impact of De-Ashing Humic Acid and Humin on Organic Matter Structural Properties and Sorption Mechanisms of Phenanthrene
	Yang, Yu ; Shu, Liang ; Wang, Xilong ; Xing, Baoshan ; Tao, Shu
刊名	environmental science technology
	2011
关键词	POLYCYCLIC AROMATIC-HYDROCARBONS GLASS-TRANSITION MINERAL SURFACES CLAY-MINERALS BLACK CARBON SOIL SUBSTANCES CONTAMINANTS SEDIMENTS BEHAVIOR
DOI	10.1021/es2003149
英文摘要	Organic matter-mineral interactions greatly affect the fate of hydrophobic organic compounds (HOCs) in the environment. In the present study, the impact of organic matter-mineral interaction on sorption of phenanthrene (PHE) by the original and de-ashed humic acids (HAs) and humin (HM) was examined. After de-ashing treatment, the overall polarity of organic matter in HAs and HM consistently decreased. Differently, the surface polarity of HAs increased but that of HM decreased. No correlation between K(oc) values of PHE by all tested sorbents and their bulk polarity was observed due to inaccessibility of a portion of interior sorption domains. The inaccessibility of interior sorption domains in HAs and HM was partly due to the crystalline structure in organic matter as indicated by differential scanning calorimetric (DSc) and (13)C NMR data and the interference from minerals. A goad correlation between surface polarity of the original and de-ashed HAs and HMs and their K(oc) values for PHE indicated its importance in HOC sorption. Dissimilar changes in surface polarity of HAs and HM after de-ashing treatment can be ascribed to the distinct interactions between organic matter and minerals. The solid-state (13)C NMR, XPS, and elemental composition data of all tested sorbents revealed that a larger fraction of O atoms in HAs were involved in organic matter mineral interaction as compared to HM. Results of this work highlight the importance of soil organic matter (SOM)-mineral interactions, surface polarity, and microscaled domain arrangement of SOM in HOC sorption.; Engineering, Environmental; Environmental Sciences; SCI(E); EI; PubMed; 19; ARTICLE; 9; 3996-4002; 45
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/160665]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Yang, Yu,Shu, Liang,Wang, Xilong,et al. Impact of De-Ashing Humic Acid and Humin on Organic Matter Structural Properties and Sorption Mechanisms of Phenanthrene[J]. environmental science technology,2011.
APA	Yang, Yu,Shu, Liang,Wang, Xilong,Xing, Baoshan,&Tao, Shu.(2011).Impact of De-Ashing Humic Acid and Humin on Organic Matter Structural Properties and Sorption Mechanisms of Phenanthrene.environmental science technology.
MLA	Yang, Yu,et al."Impact of De-Ashing Humic Acid and Humin on Organic Matter Structural Properties and Sorption Mechanisms of Phenanthrene".environmental science technology (2011).