REMOTE CLASSIFICATION METHOD OF OIL IMPURITIES ON WATER SURFACE Russian patent published in 2013 - IPC G01N21/64 

FIELD: measurement equipment.

SUBSTANCE: for classification of oil impurities on water surface, test water surface is irradiated in UV-range on excitation wave length λ_e, intensity of fluorescent radiation I(λ₁), I(λ₂), I(λ₃), I(λ₄) from the test water surface is recorded in four narrow spectral ranges with centres on wave lengths λ₁, λ₂, λ₃, λ₄, which have been chosen from the condition of maximum distance between classes in two-dimensional space of classification criteria and Values K₁ and K₂ are found for the test water surface, and belonging of oil impurity to one of the classes is estimated as per penetration of the found values K₁ and K₂ for the test water surface to the area corresponding to that class in two-dimensional space of classification criteria.

EFFECT: invention allows performing classification as per four groups: water with different characteristics, protein or algae in water, crude oil, heavy oil products, and light cleaned oil products.

5 dwg, 2 tbl