ESTIMATION OF FITOTOXICITY OF MIXED AVIATION FUELS WITH APPLICATION OF PLANT TESTERS

Abstract

In this article the problem of estimating phytotoxicity a mixture of aviation fuels with the use plant testers is considered.
Object of research - assessment of phytotoxicity mixed aviation fuels.
The main purpose of the work was to identify plant test objects pollution-sensitive blended aviation fuels in the early stages of germination. Establishing the relationship between the content of aviation fuel in the soil and the initial growth parameters of test plants, the establishment of a plant indicator pollution with mixed aviation fuel, which responds to low fuel content in the soil, at the level of approximately allowable concentration
Studies have made it possible to establish that the Lola Ross salad and the Rudolf radish are sensitive to the content of JETA-1 aviation fuel and JETA-1 blended aviation fuel biofuel in the early stages of germination in a wide range of concentrations of pollutant 0-20%. It was determined that in order to assess the toxicity of the measurement of the initial growth parameters of these plants, obtained on the 6th day of growth in the dark, is optimal. Plants: Peas, beans and cucumbers are not suitable for testing the toxicity of aviation fuel JETA-1 and mixed aviation fuel JETA-1 biofuels, since they died at the germination stage.
To obtain quantitative characteristics of the influence pollutants, we determined the relationship between the plant's response to the stress factor and the dose of the factor. We discovered that when adding JETA-1 aviation fuel with a concentration 50 ml, the length of the stem the Lola Ross salad and the Rudolf radish remained almost identical to the samples we drank in concentrations of 70x30 JETA-1 biofuels and decreased in comparison with 

the samples that we were watering, concentrations of 50 ml of biofuel and 50 ml of a JETA-1-biofuel mixture of 50x50. In the case watering plants with a water concentration of 100 ml JETA-1, the inhibition of stem growth was more pronounced. Compared to samples that were water-saturated with 100 ml water JETA-1 biofuel (70x30) and 100 ml water samples, JETA-1 had twice the height of the stem compared to the samples, foamed with water concentrations of 100 ml of biofuels and 100 ml of JETA-1- kerosene (50x50). Plants, watered with a concentration of 100 ml JETA-1, had 4-6 times less stem height. As a result of the experiments, the specificity and sensitivity phytotems (Lola Ross salad and Rudolf radish) were revealed, indicating the possibility of their use for assessing the toxicity of oil contaminated soils.
The results of this work can be used to assess the phytotoxicity both mixed and traditional aviation fuels with the use of plant testers at storage sites for aviation fuels during their operation (aviation fuel supply, fuel depots, petroleum storage depots). Also, research results can be used by environmental specialists in the field of environmental protection and specialists in the field exploitation storage facilities for motor fuels.
Foreseeable assumptions about the development of the research object are the search and establishment of more sensitive and cheap phytotems with the possibility of their use for assessing the toxicity of oil contaminated soils.