期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 20, 期 4, 页码 2220-2225出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-012-1087-6
关键词
Fluorescence quenching titration; Fulvic acid; Parallel factor analysis; Polycyclic aromatic hydrocarbons (PAHs); Three-dimensional excitation-emission matrix fluorescence spectroscopy
资金
- Natural Science Foundation of China [50978243, 51178443]
- Outstanding Young Scientists Foundation of Anhui Province, China [10040606Y27]
- Fundamental Research Funds for the Central Universities
Polycyclic aromatic hydrocarbons (PAHs) are persistent, bioaccumulative, and toxic chemicals and are listed as priority pollutants by the US EPA. Although they are sparsely soluble in water, their solubility can be increased by binding to dissolved organic matter in natural waters, which will further increase their environmental risk as toxic pollutants. In this study, the interaction between PAHs, exemplified by fluorene and anthracene, and fulvic acid (FA) was studied using fluorescence quenching titration method with fluorescence emission spectra, respectively. The association of FA with the mixture of fluorene and anthracene was also evaluated by excitation-emission matrix (EEM) fluorescence spectrometry combined with parallel factor (PARAFAC) analysis. Results demonstrate that EEM fluorescence spectrometry with PARAFAC analysis was sensitive and reliable to determine the binding properties of PAHs with FA in a mixed aqueous solution. The conditional stability constants and binding capacities show that both PAHs bind to FA tightly.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据