Journal of Atmospheric and Environmental Optics ›› 2014, Vol. 9 ›› Issue (6): 441-447.

• 论文 • Previous Articles     Next Articles

Temporal Fluorescence Characteristics of Sediment Pore WaterUsing Raman Spectroscopy Detection

DU Zeng-feng1, YANG De-wang1, WANG Bing2, ZHANG Xin2, ZHENG Rong-er1   

  1. (1 Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, China; 
    2 Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China)
  • Received:2014-03-26 Revised:2014-04-22 Published:2014-11-14

Abstract:

In order to investigate the temporal characteristics of its fluorescence background, spectra of the pore water squeezed from sediment core were obtained. Concentration gradient of SO42-, which suggests depletion of SO42- by sulfate reduction, was observed within the pore water using Raman spectroscopy. Besides, a notable fluorescence background difference in the Raman spectra of the pore water over different exposure duration to air was also observed. The fluorescence spectroscopy analysis of the pore water showed that the fluorescence at 300-350 nm increases gradually over time once the sediment core was recovered. Possible explanations for the results were preliminarily discussed.

Key words: sediment pore water, sulfate radical, Raman spectra, fluorescence spectra

CLC Number: