Effect of pH on binding of pyrene to hydrophobic fractions of dissolved organic matter （DOM） isolated from lake water-中国期刊网

摘要 Inordertobetterunderstandthecompositionalandstructuralcomplexityofdissolvedorganicmatter（DOM）macromoleculesandprovidemechanisticinformationonthebindingofhydrophobicorganiccontaminants（HOCs）toDOM,wefractionatedlargeamountsoflakewaterintothreehydrophobicDOM-fractions.Thevariationofthepartitioningcoef?cients(KDOC)ofpyreneatdifferentpHlevelswasexaminedby?orescencequenchingtitration.Resultsshowthat,relativetothemorepolaracidicDOM-fractions,thehydrophobicneutralfractionexhibitsahighersorptionabilitytopyrene.Generally,thesorptionofpyrenetothethreehydrophobicfractionsisstronglypH-dependent.TheKDOCvaluesofpyrenegenerallyincreasewithdecreasingpHlevels,whichisespeciallyobviousinthesorptionofpyrenetothefulvicacidfractions,suggestingthatthebindingiscontrolledbyhydrophobicinteractions.Themechanismsunderlyingthebindingofpyrenetothehydrophobicfractionswerealsodiscussed.Ourdataarebene?cialtofurtherunderstandingthebindingofHOCstoDOMandhowithasbeenaffected,whichmayresultinmoreaccuratepredictionsofKDOC.

1YI Yueyuan;ZHENG Airong;GUO Weidong;YANG Liyang;CHEN Ding. Optical properties of estuarine dissolved organic matter isolated using cross-flow ultrafiltration.海洋科学,2014-04.
2LIU Dong;BAI Yan;HE Xianqiang;PAN Delu;WANG Difeng. The dynamic observation of dissolved organic matter in the Zhujiang（Pearl River） Estuary in China from space.海洋科学,2018-07.
3ZHANG Jing;ZHAO Junjie;YANG Guipeng;LIU Weifeng. Concentration and Characterization of Colored Dissolved Organic Matter in the Surface Microlayer and Subsurface Water of the Yellow Sea and the East China Sea.海洋科学,2019-02.
4LIN Hui;GUO Weidong;HU Minghui;LIN Cai;JI Weidong. Spatial and temporal variability of colored dissolved organic matter absorption properties in the Taiwan Strait.海洋科学,2012-05.
5Ahmed Rida GALALY;Guido VAN OOST. Fast inactivation of microbes and degradation of organic compounds dissolved in water by thermal plasma.核技术及应用,2018-08.
6WANG Feipeng;FENG Jia;WANG Jie;LI Bo;XIE Shulian. Phylogenetic and Morphological Investigation of a Dunaliella Strain Isolated from Yuncheng Salt Lake,China.地质学,2014-04.
7刘敏;陈志明;等. The Role of Organic Matter in the Formation of Siderite from Xuanlong Area,Hebei Province.地球化学,1997-01.
8SHEN Zhang-Jun;WANG Yu-Peng;SUN Qing-Yet;WANG Wei. Effect of Vegetation Succession on Organic Carbon, Carbon of Humus Acids and Dissolved Organic Carbon in Soils of Copper Mine Tailings Sites.土壤学,2014-02.
9SONG Ge;ZHAO Xu;WANG Shen-Qiang;XING Guang-Xi;ZHU Zhao-Liang. Dissolved Organic Nitrogen Leaching from Rice-Wheat Rotated Agroecosystem in Southern China.土壤学,2015-01.
10施继锡;余孝颖. Second Hydrocarbon—Generation from Organic Matter Trapped in Fluid Inclusions in Carbonate Rocks.地球化学,1999-04.

Effect of pH on binding of pyrene to hydrophobic fractions of dissolved organic matter （DOM） isolated from lake water

来源期刊

相关推荐

同分类资源更多

相关关键词

Effect of pH on binding of pyrene to hydrophobic fractions of dissolved organic matter （DOM） isolated from lake water

来源期刊

相关推荐

同分类资源 更多

相关关键词

同分类资源更多