Investigating interactions of phenanthrene with dissolved organic   matter: Limitations of Stern-Volmer plot

doi:10.1016/j.chemosphere.2007.05.059

CORC > 北京大学 > 环境科学与工程学院

	Investigating interactions of phenanthrene with dissolved organic matter: Limitations of Stern-Volmer plot
	Pan, Bo ; Xing, Baoshan ; Liu, Wenxin ; Xing, Guanhua ; Tao, Shu
刊名	chemosphere
	2007
关键词	dissolved organic matter nonlinear binding fluorescence quenching Stern-Volmer equation Freundlich equation POLYCYCLIC AROMATIC-HYDROCARBONS SOIL HUMIC ACIDS DAPHNIA-MAGNA BINDING SORPTION PYRENE BIODEGRADATION BIOAVAILABILITY EQUILIBRIUM NAPHTHALENE
DOI	10.1016/j.chemosphere.2007.05.059
英文摘要	Although linear binding isotherms of hydrophobic organic chemicals (HOCs) with dissolved organic matter (DOM) are widely reported, several studies showed nonlinear HOC - DOM interactions. This study pointed out that fluorescence static quenching modeling (FSQM), which often uses a Stern - Volmer type plot to process the data from fluorescence quenching experiments, is conceptually different from the classic Stern - Volmer equation. We also emphasized that although linear Stern - Volmer plots are generally observed in literature, it does not necessarily indicate a linear HOC - DOM interaction. According to both mathematical simulation and laboratory sorption experiments in this study, nonlinear interactions could be concealed by the use of Stern - Volmer plot. Moreover, this study tested the two assumptions for applying FSQM to process binding data. Our results showed that binding coefficient (KDoc) for phenanthrene is neither independent of free solute concentration, nor DOM concentration, which is a critical limitation for using FSQM in a form of Stern - Volmer equation to examine HOC - DOM interactions. Therefore, the true characteristics of HOC - DOM interactions need to be examined using different ways of experimental design and data processing. (c) 2007 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000251006800007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; PubMed; 34; ARTICLE; 10; 1555-1562; 69
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/198265]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Pan, Bo,Xing, Baoshan,Liu, Wenxin,et al. Investigating interactions of phenanthrene with dissolved organic matter: Limitations of Stern-Volmer plot[J]. chemosphere,2007.
APA	Pan, Bo,Xing, Baoshan,Liu, Wenxin,Xing, Guanhua,&Tao, Shu.(2007).Investigating interactions of phenanthrene with dissolved organic matter: Limitations of Stern-Volmer plot.chemosphere.
MLA	Pan, Bo,et al."Investigating interactions of phenanthrene with dissolved organic matter: Limitations of Stern-Volmer plot".chemosphere (2007).