New aspect of environmental hazard from non-lethal chemical pollution of water. Article titled: On studying the hazards of pollution of the biosphere: effects of sodium dodecylsulfate (SDS) on planktonic filter-feeders. DOI: 10.1134/S0012496609020136; http://www.springerlink.com/content/p7754h672w814m30/;
http://5bio5.blogspot.com/2015/02/new-aspect-of-environmental-hazard-from.html
https://plus.google.com/113741567003933181536/posts/UsrzQfHnXnB
18 downloads by 12.02.2015. A review (favorable) of this paper was published: http://5bio5.blogspot.com/2014/07/review-of-on-studying-hazards-of.html ;
Full reference:
Vorozhun I. M., S. A. Ostroumov. On studying the hazards of pollution of the biosphere: effects of sodium dodecylsulfate (SDS) on planktonic filter-feeders. - Doklady Biological Sciences, 2009, Vol. 425, pp. 133–134.
ISSN 0012-4966.
DOI: 10.1134/S0012496609020136;
Full text online see:
https://www.researchgate.net/publication/216175249_On_studying_the_hazards_of_pollution_of_the_biosphere_effects_of_sodium_dodecylsulfate_(SDS)_on_planktonic_filter-feeders ;
https://www.researchgate.net/publication/216175249_On_studying_the_hazards_of_pollution_of_the_biosphere_effects_of_sodium_dodecylsulfate_%28SDS%29_on_planktonic_filter-feeders;
http://www.springerlink.com/content/p7754h672w814m30/;
** Full text online free: http://www.scribd.com/doc/45914806;
** http://www.citeulike.org/user/ATP/article/6113581;
[the original Russian text: I.M. Vorozhun, S.A. Ostroumov, 2009, published in Doklady Akademii Nauk, 2009, Vol. 425, No. 2, pp. 271–272].
**
The goal of this study was to test whether the surfactant SDS has an inhibitory effect on the ability of the planktonic filter-feeder Daphnia magna to remove phytoplankton from water during their filtration activit. Daphnia were kept under laboratory conditions in vessels and fed with phytoplankton: the green algae Scenedesmus quadricauda (Turp.) Breb.
After filtration for 6–24 h in the presence of SDS at concentrations 5 and 10 mg/l, the abundance of S. quadricauda cells in water was higher than in the control.
At the lower SDS concentrations (0.1, 0.5, and 1 mg/l), differences in the abundance of algal cells relative to the control were observed after 3 h of incubation and disappeared after 6–24 h of incubation.
The calculation of the mean rate of algae removal by daphnia showed that this parameter decreased within the first 3 h after the beginning of incubation in the presence of SDS.
**
CONCLUSION. It is the first time that it was demonstrated that the synthetic surfactant SDS decreased the rate of water filtration by the planktonic crustaceans D. magna. It was discovered that this non-lethal effect of the chemical pollutant is of a significant environmental hazard to the water quality and to the biosphere.
https://plus.google.com/113741567003933181536/posts/UsrzQfHnXnB
18 downloads by 12.02.2015. A review (favorable) of this paper was published: http://5bio5.blogspot.com/2014/07/review-of-on-studying-hazards-of.html ;
Full reference:
Vorozhun I. M., S. A. Ostroumov. On studying the hazards of pollution of the biosphere: effects of sodium dodecylsulfate (SDS) on planktonic filter-feeders. - Doklady Biological Sciences, 2009, Vol. 425, pp. 133–134.
ISSN 0012-4966.
DOI: 10.1134/S0012496609020136;
Full text online see:
https://www.researchgate.net/publication/216175249_On_studying_the_hazards_of_pollution_of_the_biosphere_effects_of_sodium_dodecylsulfate_(SDS)_on_planktonic_filter-feeders ;
https://www.researchgate.net/publication/216175249_On_studying_the_hazards_of_pollution_of_the_biosphere_effects_of_sodium_dodecylsulfate_%28SDS%29_on_planktonic_filter-feeders;
http://www.springerlink.com/content/p7754h672w814m30/;
** Full text online free: http://www.scribd.com/doc/45914806;
** http://www.citeulike.org/user/ATP/article/6113581;
[the original Russian text: I.M. Vorozhun, S.A. Ostroumov, 2009, published in Doklady Akademii Nauk, 2009, Vol. 425, No. 2, pp. 271–272].
**
The goal of this study was to test whether the surfactant SDS has an inhibitory effect on the ability of the planktonic filter-feeder Daphnia magna to remove phytoplankton from water during their filtration activit. Daphnia were kept under laboratory conditions in vessels and fed with phytoplankton: the green algae Scenedesmus quadricauda (Turp.) Breb.
After filtration for 6–24 h in the presence of SDS at concentrations 5 and 10 mg/l, the abundance of S. quadricauda cells in water was higher than in the control.
At the lower SDS concentrations (0.1, 0.5, and 1 mg/l), differences in the abundance of algal cells relative to the control were observed after 3 h of incubation and disappeared after 6–24 h of incubation.
The calculation of the mean rate of algae removal by daphnia showed that this parameter decreased within the first 3 h after the beginning of incubation in the presence of SDS.
**
CONCLUSION. It is the first time that it was demonstrated that the synthetic surfactant SDS decreased the rate of water filtration by the planktonic crustaceans D. magna. It was discovered that this non-lethal effect of the chemical pollutant is of a significant environmental hazard to the water quality and to the biosphere.