The impact of detergents on the mortality of Daphnia magna
This study aimed to examine the impact of detergents on the mortality rate of Daphnia magna. For this purpose, we exposed one-day-old Daphnia magna for 24 hours to six nationwide consumed detergents, comprising of two dishwasher detergents, three washing-powders (one for hand wash and two for washing-machines) and one shampoo. The result of our study revealed that the dishwasher detergents had the greatest impact on the Daphnia magna mortality. One of these detergents containing 17% Linear Alkyl Benzene Sulfonate, 5% Deethanolamine and 2% Lauric acid Ethanolamid was the most lethal detergent in this study. The permissible concentration and the EC50 of this dishwasher detergent is 4.7 mg/1 and 7.5 mg/1, respectively. Studies in 1993 indicated that the concentration of Linear Alkyl Benzene Sulfonate in some part of Anzali Lagoon had been 8.9 mg/1, which is above the permissible level. Among the washing-powders, the washing-machine powders were the least lethal detergents for Daphnia magna (EC50 = 50.9), while the only tested shampoo was the least lethal (EC50 = 52) detergent for Daphnia magna correlation coefficient between logarithm of concentration of the detergents and the mortality rate of Daphnia magna were 79% - 99%.
| Main Authors: | , |
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| Format: | article biblioteca |
| Language: | Persian |
| Published: |
1998
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| Subjects: | Pollution, Impact, Powder, Mortality rate, Daphnia magna, EC50, Shampoo, Linear Alkyl Benzene, Detergents, Anzali Lagoon, Iran, |
| Online Access: | http://hdl.handle.net/1834/38629 |
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