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排序方式: 共有122条查询结果,搜索用时 15 毫秒
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Kjetil Sagerup Vladimir Savinov Tatiana Savinova Vadim Kuklin Derek C.G. Muir Geir W. Gabrielsen 《Environmental pollution (Barking, Essex : 1987)》2009,157(8-9):2282-2290
The prediction of a higher parasite infection as a consequence of an impaired immune system with increasing persistent organic pollution (POP) and heavy metal levels were investigated in adult glaucous gull (Larus hyperboreus) from Svalbard. The levels of chlorinated pesticides, polychlorinated biphenyls (PCBs), toxaphenes and polybrominated diphenyl ethers (PBDEs) were measured in liver. Cupper, cadmium, lead, mercury, selenium and zinc were measured in kidney samples. An elevated ratio of PCB-118 was found, suggesting that local contamination from the settlement was detectable in the glaucous gull. Eight cestodes, four nematodes, two acanthocephalan and three trematode helminth species were found in the intestine. A positive correlation was found between cestode intensities and selenium levels and between acanthocephalan intensities and mercury levels. No correlation was found between parasite intensities and POP concentrations. It is concluded that the contaminant levels found in glaucous gulls do not cause immune suppression severe enough to affect parasite intensity. 相似文献
54.
Tatiana V. Komarova Michael E. Bartkow Steve Carter 《Environmental pollution (Barking, Essex : 1987)》2009,157(3):731-736
Semipermeable membrane devices (SPMDs) were deployed in water using four different methods: a typical SPMD cage with and without a mesh cover, a bowl chamber and without any protection. In addition to routinely used performance reference compounds (PRCs), perdeuterated dibenz[a,h]anthracene was added. Due to its high sampler to water partition coefficient no measurable clearance due to diffusion was expected during the deployment period, hence any observed loss could be attributed to photodegradation. The loss of PRCs was measured and SPMD-based water concentrations determined. Results showed that a typical SPMD deployment cage covered with mesh provided the best protection from photodegradation. Samplers which had undergone the highest photodegradation underestimated PAH water concentrations by up to a factor of 5 compared to the most protected SPMDs. This study demonstrates that the potential for photodegradation needs to be addressed when samplers are deployed in water of low turbidity. 相似文献
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Zamulina Inna V. Gorovtsov Andrey V. Minkina Tatiana M. Mandzhieva Saglara S. Burachevskaya Marina V. Bauer Tatiana V. 《Environmental geochemistry and health》2022,44(2):387-398
Environmental Geochemistry and Health - Organic matter (OM) and enzymes activity can act as indicators of the time and level of soil contamination with heavy metal. The goal of this study is... 相似文献
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Konstantinova Elizaveta Minkina Tatiana Konstantinov Alexandr Sushkova Svetlana Antonenko Elena Kurasova Alina Loiko Sergey 《Environmental geochemistry and health》2022,44(2):409-432
Environmental Geochemistry and Health - This study investigated levels and sources of pollution and potential health risks associated with potentially toxic elements (PTEs) and polycyclic aromatic... 相似文献
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Gavriliev Sakhayaan Petrova Tatiana Miklyaev Petr 《Environmental science and pollution research international》2022,29(59):88606-88617
Environmental Science and Pollution Research - This article delves into the factors that may influence radon flux, such as soil properties and weather conditions, on the example of two experimental... 相似文献
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Kolehmainen E Tuppurainen K Lanina SA Sievänen E Laihia K Boyarskiy VP Nikiforov VA Zhesko TE 《Chemosphere》2006,62(3):368-374
Two quantum chemical models have been derived for the prediction of 13C NMR chemical shifts of novel PCB acids obtained from PCBs by catalytic carbonylation. 13C isotropic shielding constants were calculated employing the GIAO (gauge-independent atomic orbital) method with density functional theory (DFT). The best results were obtained by cluster calculations, which took the solvent effects into account properly. In this approach, a solvent molecule (acetone) was attached by a hydrogen bond to every hydrogen atom present in a PCB acid, and the geometry of the molecular cluster was optimized employing the AM1 method. For 158 chemical shifts, the cross-validated standard error was 2.8 ppm and the cross-validated correlation coefficient was 0.94. 相似文献
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Bartkow ME Kennedy KE Huckins JN Holling N Komarova T Müller JF 《Environmental pollution (Barking, Essex : 1987)》2006,144(2):371-376
Semi-permeable membrane devices (SPMDs) were loaded with deuterated anthracene and pyrene as performance reference compounds (PRCs) and deployed at a test site in four different chambers (open and closed box chamber, bowl chamber and cage chamber) for 29 days. The losses of PRCs and the uptake of polyaromatic hydrocarbons (PAHs) from the ambient air were quantified. UV-B levels measured in each deployment chamber indicated that SPMDs would be exposed to the most UV-B in the cage chamber and open box chamber. Significantly less PAHs were quantified in SPMDs deployed in the cage chamber and open box chamber compared to samplers from the other two chambers, suggesting that photodegradation of PAHs had occurred. The loss of PRCs confirmed these results but also showed that photodegradation was occurring in the closed box chamber. The bowl chamber appears to provide the best protection from the influence of direct photodegradation. 相似文献
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