Abstract
The main objective of researches is the definition of the ecological status of water bodies of the Salgir River using bioassay technique. The main goal is to define the feasibility of using these waters for irrigation. For this purpose the base alignments were chosen on the river, exposed on different intensity of anthropogenic loads, and also the treated wastewater from sewerage facilities of Simferopol. The bioassay technique presented growing seeds of test plants in the studied waters and following comparison of the length of their root system with the same seedlings grown in the distilled water. Garden radish and garden cress seeds were chosen as test plants seeds. The phytotoxicity of the tested waters was shown in inhibition of the root system development of test plants. The root system in contact with the studied waters has been developing more slowly, what proves the presence of harmful substances in testing waters, and shows their toxic effect on the plants developing. The biggest sensitivity to pollutants showed the garden cress, which had the maximal inhibiting effect of roots development of 41.8%, in comparison to the monitoring in distilled water. The experiment showed the prospects of use of test plants, with their short-term exposure with the studied waters, as a reflective criterion for bioassay testing of pollution of the natural and treated sewage waters.
Highlights
Салгир и возможности их использования для целей орошения, с применением метода биотестирования
The main objective of researches is the definition of the ecological status of water bodies of the Salgir River using bioassay technique
The bioassay technique presented growing seeds of test plants in the studied waters and following comparison of the length of their root system with the same seedlings grown in the distilled water
Summary
Салгир и возможности их использования для целей орошения, с применением метода биотестирования. Фитотоксичность тестируемых вод проявилась в ингибировании развития корневой системы тест-растений, которая в контакте с исследуемыми водами развивалась с торможением роста, что свидетельствует о присутствии вредных веществ в воде, оказывающих токсическое действие на развитие растений. Эксперимент показал перспективность использования тестрастений, с краткосрочным контактом с исследуемыми водами, в качестве чувствительного критерия для биотестирования загрязненности поллютантами как природных, так и очищенных сточных вод. Выбор предмета исследования основывался на том, что в последние годы использование растений для проведения биотестирования водных сред применяется в различных областях мониторинга окружающей среды. Учитывая необходимость использования для целей орошения вод рек, проводят химический анализ на содержание различных веществ и особенно их токсичности. Подготовка проб воды для проведения биотестирования и химического анализа. Результаты оценки проб воды, согласно почвенно-мелиоративной классификации, представлены на рисунках 2...5
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