沉积物孔隙水的拉曼光谱探测及荧光时间演化特性

大气与环境光学学报 ›› 2014, Vol. 9 ›› Issue (6): 441-447.

沉积物孔隙水的拉曼光谱探测及荧光时间演化特性

杜增丰1, 杨德旺1, 王冰2, 张鑫2, 郑荣儿

（1 中国海洋大学光学光电子实验室, 山东青岛 266100；
2 中国科学院海洋研究所, 中国科学院海洋地质与环境重点实验室, 山东青岛 266071）

收稿日期:2014-03-26 修回日期:2014-04-22 发布日期:2014-11-14
通讯作者: 国家自然科学基金项目(41006059) 、国家高技术研究发展计划项目(2012AA09A405)资助 E-mail:rzheng@ouc.edu.cn
作者简介:国家自然科学基金项目(41006059) 、国家高技术研究发展计划项目(2012AA09A405)资助
基金资助:
国家自然科学基金项目(41006059) 、国家高技术研究发展计划项目(2012AA09A405)资助

Temporal Fluorescence Characteristics of Sediment Pore WaterUsing Raman Spectroscopy Detection

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

(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 Online:2014-11-14

摘要/Abstract

摘要：

为了研究孔隙水取样后的荧光时间演化特性，对柱状沉积物榨取得到的孔隙水样品进行了光谱采集。拉曼光谱分析表明，沉积物中的SO42-浓度随深度变大而逐渐减小，这说明沉积物孔隙水中的SO42-参与了沉积物中硫酸盐还原而被消耗；同一深度的孔隙水样品随着暴露时间的不同，采集到的拉曼光谱的荧光背景也有所差别。荧光光谱分析表明，随着孔隙水暴露时间的延长，在300~350 nm处的荧光峰的强度逐渐变大，并对荧光的形成机制进行了初步分析。

关键词: 取样孔隙水, 硫酸根, 拉曼光谱, 荧光光谱

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

中图分类号:

O433

杜增丰杨德旺王冰张鑫郑荣儿. 沉积物孔隙水的拉曼光谱探测及荧光时间演化特性[J]. 大气与环境光学学报, 2014, 9(6): 441-447.

DU Zeng-Feng, YANG De-Wang, WANG Bing, ZHANG Xin, ZHENG Rong-Er. Temporal Fluorescence Characteristics of Sediment Pore WaterUsing Raman Spectroscopy Detection[J]. Journal of Atmospheric and Environmental Optics, 2014, 9(6): 441-447.

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