10.14489/td.2019.07.pp.056-060

2019, 07 July

DOI: 10.14489/td.2019.07.pp.056-060

Abdullayeva L. Dj.
TWO WAVELENGTHS METHODS FOR DETERMINATION LEVEL OF CONTAMINATION OF SOIL WITH CRUDE OIL HYDROCARBONS USING REFLECTION SPECTRUM OF VEGETATION
(pp. 56-60)

Abstract. The questions on determination level of contamination of soil with crude oil hydrocarbons using vegetations reflection spectrum are considered. The close link between concentration of pigments in vegetation and its reflection properties make it possible to use the reflection spectroscopy as an indicator to predict the vegetation stress occur due to spill of different types of crude oil. The reason is that light types of oil have a more effect on vegetation in comparison with heavy ones. The heavy types of oil have a predominant high molecular heavy components which are hardly transported and distributed within vegetation. The light oil is less viscose’s and well filtered through soil and roots of vegetation. The stressed condition occurred due to effect of oil is mainly reasoned by its such toxic components as aromatic compounds. The carried out analysis of reflection spectrums reveals the double polarity of differences of spectral signals formed by subtraction of reflection spectrums of oil of light and heavy types from controlled reflection spectrum. It causes uncertainty in estimation of contamination of oil using single wavelength method. The question on utilization in practices the inverse type interrelations for diminishing errors of measurements inherent for single wavelength method by transition to two wavelength regime of measurements. It is shown that presence of above said inverse interrelations allows to reach following prevalence’s upon use of two wavelength measurements. 1. Incrtease of dynamic range of measurements; 2. Decrease of random errors. Two variants of two wavelengths methods allowing to determine the level of contamination of soil with crude oil hydrocarbons are developed. The general methodic for determination of level of soil pollution with oil is suggested.

Keywords: soil; hydrocarbons; reflection spectrum, vegetation, wavelength.

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L. J. Abdullayeva (Research Institute of Aerospace Informatics of National Aerospace Agency, Baku, Azerbaijan Republic) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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