研究目的
Investigating the time evolution of the laser-induced fluorescence spectra of different oil pollution on the terrestrial surface to understand the impact of oil spills on the environment.
研究成果
The LIF evolution of oil pollution on the terrestrial surface depends heavily on the type of petroleum product. Light petroleum products show a faster decrease in fluorescent signal value than oil and heavy petroleum products. After 12-16 days, the fluorescent signal value for oil and heavy petroleum products becomes approximately 2-6 times less.
研究不足
The laboratory setup does not provide absolute measurements of the fluorescence intensity value, and the measurement error of the signal is ~10%. The study focuses on terrestrial surfaces and does not compare with water surface pollution extensively.
1：Experimental Design and Method Selection:
The study used a laboratory setup with a diode pumped Nd:YAG laser at 355 nm for fluorescence excitation. A spectrometer and a highly sensitive ICCD were used for detection.
2：Sample Selection and Data Sources:
Various petroleum products were spilled on different terrestrial surfaces (black soil, river sand, sandy soil, garden soil, forest soil, clay, etc.).
3：List of Experimental Equipment and Materials:
Nd:YAG laser, spectrometer, ICCD, various petroleum products, and terrestrial surface samples.
4：Experimental Procedures and Operational Workflow:
Measured LIF spectra at different times after spillage, controlled laser output power, and used LabVIEW for setup control.
5：Data Analysis Methods:
Analyzed the time evolution of LIF spectra, comparing the fluorescence signal decrease over time for different petroleum products.
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