نتایج جستجو برای: organohalogen compounds
تعداد نتایج: 226721 فیلتر نتایج به سال:
اسانس دو گیاه ajuga chamaecistus و mrsdenia erecta با استفاده از دستگاه کلونجر استحصال گردید و اثر آنتی اکسیدان آنها برسی شده است که اثر آنتی اکسیدانی a.chamaecistus بیشتر از m.erecta بوده است. ترکیبات اصلی موجود در این دو گیاه شامل موارد زیر است: n compound name ajuga % 1 ?-pinene ?/?? 2 n-decane ?/?? 3 limonene ??/? 4 ?-bour bonene ??/?? 5 ?-cubebene ?/? 6 trans-?-farnesene ?/? ...
Contaminants described as organochlorines (OCs; e.g., polychlorinated biphenyls [PCBs]) are present in tissues of marine mammals, including beluga whales (Delphinapterus leucas), but the complexity of contaminant exposure often is not fully known. The PCBs, OC pesticides, polybrominated diphenyl ether (PBDE) flame retardants, methylsulfonyl (MeSO2)- and hydroxy (OH)-PCB metabolites, and OH-PBDE...
An input-output balance study was performed for polybrominated diphenyl ethers, polychlorinated biphenyls and some organochlorine pesticides on three captive, juvenile grey seals (Halichoerus grypus). The animals were fed a diet of herring for six months, during the last three months of which this study was performed. A supplement of decabromodiphenyl ether was included in the diet during the s...
OBJECTIVE Recent studies indicate that persistent organohalogen pollutants (POPs) may contribute to sex ratio changes in offspring of exposed populations. Our aim in the present study was to investigate whether exposure to 2,2 ,4,4 ,5,5 -hexachlorobiphenyl (PCB-153) and dichlorodiphenyldichloroethene (p,p -DDE) affects sperm Y:X chromosome distribution. SUBJECTS AND METHODS We obtained semen ...
Perfluorinated Compounds (PFCs) have recently been detected in a wide range of places. This study examined contribution of the non-point source (NPS) to PFCs in rivers. NPS contribution of PFCs has not been focused much so far. In this study, samples of river water were collected from Tsurumi River at a fixed location during low and high levels of river flow (due to rainfall) and their concentr...
The aim of the present studies was to describe the effect of two organohalogen pesticides: DDT and bromopropylate, on early changes in rat liver, proposed in the literature to be useful endpoints in screening of non-genotoxic hepatocarcinogens and/or liver tumor promoters. We investigated the effects on the following endpoints: hepatomegaly, mitogenesis (DNA synthesis, mitotic activity, percent...
In this study, polyhalogenated compounds such as BFRs were analyzed in indoor air and dust samples from two homes in Japan. Concentrations of PCBs and TBPs in exhaust and indoor air of two houses were detected at 10 – 10 pg/m orders and were well above those in outdoor air. For dust samples, the detected PBDE and PBDD/F concentrations were in the range of our past study. Interestingly, compared...
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