Abstract
We demonstrate the remote detection method of oils in water by laser Raman spectroscopy. A frequency-doubled, Q-switched Nd:YAG laser at 532 nm was used as a light source, and oils in water were identified in the optical cells placed 2 and 4 m away in a water tank by using the Raman signals at 2910 cm−1 from oils. The results show that the configuration of underwater remote Raman spectroscopy can be a useful alternative method for detecting oil leaks from subsea pipelines, potentially providing more capability of target selectivity as compared with fluorescence detection
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