Toxicity tests on Daphnia magna
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F21%3A43921816" target="_blank" >RIV/62156489:43210/21:43921816 - isvavai.cz</a>
Result on the web
<a href="https://mendelnet.cz/media/mnet_2021_full.pdf" target="_blank" >https://mendelnet.cz/media/mnet_2021_full.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Toxicity tests on Daphnia magna
Original language description
The aim of this study was to determine the toxic effect of chemicals on the tested organism Daphnia magna. The following substances were selected for testing: polyaluminium chloride (PAX 18), its aqueous solution (PAX 19) and potassium dichromate (K2Cr2O7) as a reference substance. The experimental concentrations for PAX 18 were in the intervals 1-100 mg/l, for PAX 19 10-300 mg/l and for K2Cr2O7 40-150 mg/l. Testing was performed in three replicates with ten specimens. Each test took 48 hours without changing the medium. The test organisms were not fed, and a tap water was used as a medium. The 24hEC50 values were as follows: 45.06 mg/l for PAX 18, 97.82 mg/l for PAX 19 and 1,57 mg/l for potassium dichromate. The 48hEC50 values were as follows: 22.62 mg/l for PAX 18, 37.20 mg/l for PAX 19 and 0.864 mg/l for K2Cr2O7. Changes in pH, dissolved oxygen content and number of inhibited individuals were regularly monitored. The pH values for PAX 18 were between 4.56-8.40, for PAX 19 within the range of 5.63-8.40 and for K2Cr2O7 did not drop below 7. Low pH values for PAX 18 and PAX 19 can be explained by very low pH value of the test substances, therefore the results can be considered as valid. The oxygen content was sufficient for all three test substances. The concentrations of chemical substances used in toxicity tests were more toxic for daphnids than the concentrations introduced into the aquatic environment.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10617 - Marine biology, freshwater biology, limnology
Result continuities
Project
<a href="/en/project/EF16_019%2F0000869" target="_blank" >EF16_019/0000869: Sustainable production of healthy fish in various aquaculture systems - PROFISH</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
MendelNet 2021: Proceedings of International PhD Students Conference
ISBN
978-80-7509-821-4
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
203-207
Publisher name
Mendelova univerzita v Brně
Place of publication
Brno
Event location
Brno
Event date
Nov 10, 2021
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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