[Comparative research on determination of water integrated organic pollution index with three dimensional excitation-emission fluorescence spectroscopy and traditional wet chemical methods].
Three dimensional excitation-emission fluorescence spectra, chemical oxygen demanding (COD) and dissolved organic carbon (DOC) for water samples from Science Island, Chaohu Lake and Taihu Lake were determined. The COD values of the samples from Chaohu Lake were linearly correlated with the DOC values. Relationships of dissolved organic matter (DOM) concentrations determined by three dimensional excitation-emission fluorescence matrix (3DEEM), observed protein-like fluorescence intensity (Ipro-like) and humic-like fluorescence intensity (Ihum-like) to the chemical oxygen Demanding (COD) for all the samples from different sources were analyzed. Results indicated that DOM concentrations measured by 3DEEM and COD for the water samples from Science Island were well linearly related (r = 0.82172), and the linear relationships also existed between Ipro-like. and COD (r = 0.84651), as well as Ihum-like and COD (r = 0.83689). However, for the water samples from Chaohu Lake and Taihu Lake, no linear relationships existed. The cause of the above difference between the water samples from Science Island and those from Chaohu Lake and Taihu Lake, and the feasibility and the limits of the integrated organic pollution measurement using three dimensional excitation-emission fluorescence spectroscopy were further discussed.
Wang
Zhi-gang
ZG
University of Science and Technology of China, School of Earth and Space Science, Hefei 230026, China. Zhigangw@mail.ustc.edu.cn
Liu
Wen-qing
WQ
Zhang
Yu-jun
YJ
Li
Hong-bin
HB
Zhao
Nan-Jing
NJ
Liu
Jian-guo
JG
Sima
Wei-chang
WC
Yang
Li-shu
LS
D002623:Chemistry Techniques, Analytical / Q000379:methods*; D004784:Environmental Monitoring / Q000379:methods; D009930:Organic Chemicals / Q000032:analysis*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D009930:Organic Chemicals; D014874:Water Pollutants, Chemical