期刊
WATER QUALITY RESEARCH JOURNAL OF CANADA
卷 47, 期 2, 页码 131-139出版社
IWA PUBLISHING
DOI: 10.2166/wqrjc.2012.028
关键词
fulvic material; groundwater; humic material; Natural Organic Matter (NOM)
资金
- Laurentian University
- Ministry of Northern Development, Mines and Forestry (MNDMF)
Fluorescence spectroscopy with the spectral resolution routine PARAFAC is a leading tool to analyze Natural Organic Matter (NOM) in waters. This routine resolves spectra into humic-, fulvic- and protein-like components, which helps interpret the NOM dynamics in environmental systems. This work is one of the first systematic studies dealing with the impact of chemical perturbations on the fluorescence spectral interpretation of NOM. The samples, taken at two Canadian Shield locations (a shallow set and a deep set to similar to 650 m), were perturbed for pH ('titrations' from pH 4 to 10) and salinity (from similar to 0.02 to 3% salt content), then analyzed by fluorescence/PARAFAC. Our fluorescence signals for the three components showed no clear change with pH, as would be expected with a classic titration. The signals were reproducible between replicates for the humic- and protein-like components, but less so for the fulvic- like components. Changes of salinity only had a small impact on the fluorescence signal (a similar to 2.7-3.4% signal decrease for each salinity unit, %) for the three components in this salinity range.
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