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	荧光极性探针在腐殖酸和芘相互作用研究中的应用; Study on the Interaction Between Humic Acid and Pyrene by Polarity Probe
	Li YQ(李毓骐) ; Zhu YX(朱亚先) ; Lu ZB(鹿贞彬) ; Peng JH(彭景吓) ; Wang P(王萍) ; Cai ZQ(蔡宗群) ; Xiao X(肖翔) ; Zhang Y(张勇)
	2007-01
关键词	腐植酸 荧光探针 芘 humic acid polarity probe pyrene
英文摘要	[中文摘要]芘(Pyrene,Py)的荧光发射光谱的第一振动带和第三振动带强度比值(I1/I3)能够反映其所处微环境的极性,因此运用Py荧光探针法考察了不同化学条件对腐植酸(Humic Acid,HA)假胶束体系微环境性质的影响,以及对HA和Py之间相互作用的影响.结果表明:HA浓度、pH值、盐度、溶剂等化学条件的改变,均会引起Py的I1/I3的变化,因为条件的变化使HA存在形态发生变化,从而导致Py所处为环境极性的变化.另外,重金属离子浓度的变化也可以影响HA和Py之间相互作用的影响,随着重金属离子浓度的增大I1/I3值遵循三段式变化趋势.这些现象均表明HA和PAHs之间的作用以非极性相互作用为主.[英文摘要]In the fluorescence spectra of Pyrene(Py),the ratio of fluorescence emission intensitise corresponding to the first and third peaks(I_1/I_3) was depended on the polarity of the microenvironment where Py located.The effects of the different chemical conditions on the microenvironment of Humic acid(HA) and the interactions between HA and Py were investigated by polarity probe method.The variation of the I_1/I_3 value of Py was studied in the different pH values,as well as in the different concentrations of HA，,sodium chloride and heavy metal ions. The result s showed that the changes of chemical condition resulted in the variations of the I1 / I3 value of Py. Those set s of effect s were explained in terms of conformational adjustment s of HA. Furthermore ,different types of heavy metal ions had different effects on the interactions between HA and the PAHs. To describe the complicated effect s of heavy metal ions ,we use the three2stage variation model that encompasses decreasing and increasing trends and plateaus. The mechanisms were explained in the variation of HA st ructure configuration , HA aggregation and the salting2out effect . All of the results proved that the interactions between HA and Pyrene Py were nonpolar.; 国家自然科学基金(20577037)资助
语种	中文
出版者	厦门大学
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/3010]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	李毓骐,朱亚先,鹿贞彬,等. 荧光极性探针在腐殖酸和芘相互作用研究中的应用, Study on the Interaction Between Humic Acid and Pyrene by Polarity Probe[J],2007.
APA	李毓骐.,朱亚先.,鹿贞彬.,彭景吓.,王萍.,...&张勇.(2007).荧光极性探针在腐殖酸和芘相互作用研究中的应用..
MLA	李毓骐,et al."荧光极性探针在腐殖酸和芘相互作用研究中的应用".(2007).

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