Study of Ampicillin Toxicity to Daphnia Magna Crustaceans and Activated Silt Community

Abstract

Although the total content of organic s compounds in water is regulated, it is rather difficult to formulate and set standards for individual organic substances coming to the biological treatment facilities of urban aeration stations. Many experts believe it necessary to conduct further experimental studies to set their permissible concentrations and prevent slowing down biological treatment. One of the accepted experimental control methods for toxicity is a bio testing method. In the course of the present study, an investigation into ampicillin toxicity was performed for the test-objects daphnia and community of microorganisms in active silt. The experiment was carried out on crustaceans using N.S. Stroganov standard technique. The impact of antibiotics on active silt was assessed by changes in the microorganisms’ dehydrogenases activity. The research results allow to characterize ampicillin as very low toxic to Daphnia and to active silt community of microorganisms , toxic effect of the antibiotics was established in concentrations of 200 to 400 mg/l.

Biotesting Methods for the Detection of Drugs in the Aquatic Environment

“…Данный метод основан на оценке степени опасности исследуемого объекта по реакции живых организмов: гибель тест-объектов (выживаемость), снижение или стимуляция интенсивности размножения, уменьшение подвижности, подавление биохимических процессов, изменение характера поведения, изменение пигментации. Информация, полученная при использовании методов биотестирования, отражает комплексное токсическое воздействие всех содержащихся в изучаемой среде токсикантов [16,17]. Известно, что организмы обладают разной чувствительностью к токсикантам [18].…”