Application of Ultraviolet Spectroscopy for Monitoring Oil in Water


  1. MacGregor, C.
  2. Veinot, D.
Corporate Authors
Seatech Ltd, Halifax NS (CAN);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
This paper will discuss the usefulness of ultraviolet spectroscopy for determination of low levels of oil in water. The presentation will include the findings of a laboratory study and relate this work to the use of ultraviolet spectroscopy in the detection of oil in water from oil rig discharges, tanker discharges and oil spills at sea. The test program was essentially a matrix test where different types of oil (diesel, naval distillate, lubricating oil and hydraulic oil) were mixed at concentration from 0 to 100 ppm and detected using various wavelengths for ultraviolet absorbance and ultraviolet fluorescence. Limits of detection, linearity, interference, and phase effects (ie. dissolved versus particulate oil) were assessed. The results indicated that both ultraviolet absorbance and fluorescence could detect oil in water at 1 ppm, though experience indicated that fluorescence was about one order of magnitude more sensitive. The linearity of response was acceptable for both detection methods over the range 0 to 25 ppm. Beyond this range both methods tended to significantly under report the oil present. TRUNCATED
Report Number
DREA-SR-1999-162-PAP-11 — CONTAINED IN CA000150
Date of publication
01 Oct 1999
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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