文献详情
Screening the main factors affecting phthalate esters adsorption on soils, humic acid, and clay organo-mineral complexes
文献类型：期刊
通讯作者：Luo, S (reprint author), Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY影响因子和分区
年：2020
卷：190
ISSN：0147-6513
关键词：PAEs; Adsorption; Desorption; Soils; Multi-parameter linear regression
所属部门：环境学院
摘要：Phthalate esters (PAEs) are one of the most frequently detected organic pollutants in soils. In this work, the adsorption behaviors of di-ethyl phthalate (DEP) and dibutyl phthalate (DBP) on soils, humins (HM) and Clay organo-mineral complexes (Clay-OM) from four regions in China, Changchun (CC), Cangzhou (CZ), Yinchuan (YC), and Changsha (CS) were studied. The surface and structural properties of these sorbents were characterized using Brunauer-Emmett-Teller specific surface area, Fourier trans ...More
Phthalate esters (PAEs) are one of the most frequently detected organic pollutants in soils. In this work, the adsorption behaviors of di-ethyl phthalate (DEP) and dibutyl phthalate (DBP) on soils, humins (HM) and Clay organo-mineral complexes (Clay-OM) from four regions in China, Changchun (CC), Cangzhou (CZ), Yinchuan (YC), and Changsha (CS) were studied. The surface and structural properties of these sorbents were characterized using Brunauer-Emmett-Teller specific surface area, Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy, and C-13 nuclear magnetic resonance methods. The results showed that the CC soil has the largest pore volume (PV) and specific surface area (SSA). PV, SSA, and aliphatic carbon content of the samples ranked as Clay-OM > HM > soil. Adsorption experiments indicated that the Clay-OM exhibited the strongest adsorption affinity for both DBP and DEP, followed by HM, and then the soil samples. Furthermore, DEP and DBP adsorption amounts on the samples declined as follows: CC > CS > CZ > YC. To illustrate the dominant mechanisms for PAEs adsorption onto soil, the soil organic carbon content normalized adsorption coefficient (LogK(oc)) was correlated with several possible parameters using multiple parameter linear regression and significance testing. The R-2 values of the DBP and DEP in multi-regression equations were 0.825 and 0.741 respectively, and the significance test suggested that pore structure and specific surface area had crucial influences on the adsorption progress. ...Hide

DOI：10.1016/j.ecoenv.2019.04.004
百度学术：Screening the main factors affecting phthalate esters adsorption on soils, humic acid, and clay organo-mineral complexes
语言：外文
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41771353]; Scientific Research Foundation for the 1515 talents of Hunan Agricultural University; Science and Technology Planning Project of Hunan Province [2019RS2036]
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