خيارات البحث
النتائج 1 - 10 من 22
Progestagens for human use. Exposure and hazard assessment for the aquatic environment
2009
Besse, J.P. | Garric, J. | Biologie des écosystèmes aquatiques (UR BELY) ; Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF)
[Departement_IRSTEA]Eaux [TR1_IRSTEA]BELCA | Little information is available on the environmental occurrence and ecotoxicological effects of pharmaceutical gestagens released in the aquatic environment. Since eighteen different gestagens were found to be used in France, preliminary exposure and hazard assessment were done. Predicted environmental concentrations (PECs) suggest that if parent gestagens are expected to be found in the ng l−1 range, some active metabolites could be present at higher concentrations, although limited data on metabolism and environmental fate limit the relevance of PECs. The biological effects are not expected to be restricted to progestagenic activity. Both anti-androgenic activity (mainly for cyproterone acetate, chlormadinone acetate and their metabolites) and estrogenic activity (mainly for reduced metabolites of levonorgestrel and norethisterone) should also occur. All these molecules are likely to have a cumulative effect among themselves or with other xenoestrogens. Studies on occurrence, toxicity and degradation time are therefore needed for several of these compounds.
اظهر المزيد [+] اقل [-]Biodegradation of polychlorobiphenyls (PCB) in aquatic system by microfungi
1997
Maksimovic, M. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju) | Vojinovic-Miloradov, M. | Matavulj, M. | Mihajlovic, B. | Buzarov, D.
The aim of this paper is to find out the most efficient method of determination of toxic PCB in the natural way in aquatic system. According to the preliminary research, positive degradative response of PCBs was obtained by the selection of micro fungi species.
اظهر المزيد [+] اقل [-]Contamination by butyltin compounds and organochlorine residues in green mussel (Perna viridis, L.) from Thailand coastal waters
1997
Kan-atireklap, S. | Tanabe, S. | Sanguansin, J. | Tabucanon, M.S. | Hungspreugs, M. (Department of Environment Conservation, Ehime University, Tarumi 3-5-7, Matsuyama 790 (Japan))
Effects of the organophosphorus insecticide fenthion on phyto- and zooplankton communities in experimental ponds
1995
Hanazato, T. | Kasai, F. (Regional Environmental Division, National Institute for Environmental Studies, Onogawa, Tsukuba, Ibaraki 305 (Japan))
The fate of endosulfan in aquatic ecosystems
1993
Peterson, S.M. | Batley, G.E. (CSIRO Centre for Advanced Analytical Chemistry, Private Mail Bag 7, Menai, NSW, 2234 (Australia))
Chlorinated hydrocarbon substances
1994
Osibanjo, O. | Biney, C. | Calamari, D. | Mbome, I.L. | Naeve, H. | Ochumba, P.B.O. | Saad, M.A.H.
[Chlorinated hydrocarbon substances]
1994
Osibanjo, O. | Biney, C. | Calamari, D. | Mbome, I.L. | Naeve, H. | Ochumba, P.B.O. | Saad, M.A.H.
Mesocosm assays of oil spill bioremediation with oleophilic fertilizers: Inipol, F1 or both?
1999
Santas, R. | Korda, A. | Tenente, A. | Buchholz, K. | Santas, P. (OikoTechnics Institute, 50 Kefallenias st, A. Helioupolis 16 342 (Greece))
Hydrocarbons and organochlorines in common mussels from the Kattegat and the Belts and their relation to condition indices
1995
Granby, K. | Spliid, N.H. (National Environmental Research Institute, Frederiksborgvej 399, 4000 Roskilde (Denmark))
Stripping enrichment and GC-AED: powerful techniques for the analysis of micropollutants in the aquatic environment
1996
Boren, H. | Grimvall, A. (Linkoeping Univ. (Sweden). Dept. of Water and Environmental Studies)
