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轻质油乳化物荧光特性变化规律的实验研究

Experimental Study on Fluorescence Characteristics Change of Light Oil Emulsions

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摘要

乳化溢油是溢油进入海域之后与海水相互作用产生的一种溢油污染形态。而这种形态在开展激光诱导荧光(LIF)探测时表现出不同于其他形态的特性。因此,从荧光光谱的角度出发,以柴油和煤油为实验对象,开展轻质油乳化物荧光特性变化规律的实验研究。结果表明:轻质油的乳化会经历不同阶段,随着油水比分布的不断变化,将对激光照射发射荧光光谱产生不同的影响。不同阶段的光谱曲线对比分析可知:当激发波长为405 nm,发射波长为420~500 nm时,乳化过程存在荧光峰数目增多、峰值有增有减、谱峰的比值改变、荧光峰位偏移等一系列光谱变化特征。这些变化的特征构成轻质油乳化的荧光特性变化规律。该规律可为实际乳化溢油的LIF探测识别和状态评估提供一定依据。由于轻质油组分的差异,相同荧光特性变化趋势下的变化程度会有不同,想要实现乳化溢油的精准监测,后续还需结合具体油种考虑。

Abstract

Emulsified oil spill is a kind of oil spill pollution form caused by the interaction between oil-spilled and sea water. This kind of morphology is different from other forms in laser-induced fluorescence (LIF) detection. Therefore, from the perspective of fluorescence spectrum, diesel oil and kerosene were used as the experimental objects to carry out the experimental study on the fluorescence characteristics of light oil emulsions. Experimental results show that the emulsification of light oil will go through different stages, and will have different effects on the fluorescence spectrum of laser irradiation emission with the constant change of oil-water ratio distribution. The comparative analysis of the spectral curves at different stages shows that when the excitation wavelength is 405 nm and the emission wavelength is 420 nm to 500 nm, the number of fluorescence peaks increases, the peaks increase or decrease, the peak ratio changes, and the fluorescence peak position shifts during the emulsification process. The changing characteristics constitute the rule of fluorescence characteristics of light oil emulsification. This regular pattern can provide some basis for LIF detection and identification of actual emulsified oil spill. Due to the difference of light oil components, the change degree under the same change trend of fluorescence characteristics will be different. In order to achieve the accurate monitoring of emulsified oil spills, it is necessary to combine with specific oil types.

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中图分类号:O433.4

DOI:10.3788/CJL202047.1011003

所属栏目:光谱学

基金项目:国家科技重大专项;

收稿日期:2020-04-14

修改稿日期:2020-05-26

网络出版日期:2020-10-01

作者单位    点击查看

袁丽:燕山大学信息科学与工程学院, 河北 秦皇岛 066004
孔德明:燕山大学电气工程学院, 河北 秦皇岛 066004
张晓丹:燕山大学信息科学与工程学院, 河北 秦皇岛 066004
孔令富:燕山大学信息科学与工程学院, 河北 秦皇岛 066004
焦慧慧:燕山大学信息科学与工程学院, 河北 秦皇岛 066004
王立彬:燕山大学信息科学与工程学院, 河北 秦皇岛 066004
孔德瀚:河北环境工程学院, 河北 秦皇岛 066000

联系人作者:孔德明(demingkong@ysu.edu.cn)

备注:国家科技重大专项;

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引用该论文

Yuan Li,Kong Deming,Zhang Xiaodan,Kong Lingfu,Jiao Huihui,Wang Libin,Kong Dehan. Experimental Study on Fluorescence Characteristics Change of Light Oil Emulsions[J]. Chinese Journal of Lasers, 2020, 47(10): 1011003

袁丽,孔德明,张晓丹,孔令富,焦慧慧,王立彬,孔德瀚. 轻质油乳化物荧光特性变化规律的实验研究[J]. 中国激光, 2020, 47(10): 1011003

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