Abstract：The influence of temperature change on the determined concentrations of dissolved organic matter (DOM) in water was investigated by laser induced fluorescence (LIF) technique in laboratory. The temperature was altered within the range of 20 to 75 ℃, and the intensity of DOM fluorescence and water Raman scattering were found to decrease with rising temperature. A linear fit of the normalized fluorescence intensity versus temperature yielded a mean value of the temperature coefficient of -5.24×10-4·℃-1, and a mean value of the temperature coefficient of -3.42×10-3 (mg·L-1)·℃-1 was obtained according to the relationship between normalized fluorescence intensity and concentration of DOM. The temperature change will cause relative changes of up to 8.45% in DOM concentration within the range of 20 to 75℃ if we assume that the normalized fluorescence intensity remains the same.
Key words：Laser induced fluorescence (LIF);Concentration of dissolved organic matter (DOM);Temperature
崔志成，刘文清，赵南京，张玉钧，刘建国，李宏斌，魏庆农，杨立书 . 水体的温度变化对测定溶解有机物浓度的影响[J]. 光谱学与光谱分析, 2006, 26(06): 1127-1129.
CUI Zhi-cheng, LIU Wen-qing, ZHAO Nan-jing, ZHANG Yu-jun, LIU Jian-guo, LI Hong-bin, WEI Qing-nong, YANG Li-shu . The Influence of Temperature Change on Determined Concentrations of Dissolved Organic Matter in Water . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 1127-1129.
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