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121.
Binelli A Guzzella L Roscioli C 《Environmental pollution (Barking, Essex : 1987)》2008,153(3):610-617
Several congeners of polybrominated diphenyl ethers (PBDEs) were monitored in 14 different sampling stations of Lake Maggiore, the second largest Italian lake in regard to surface, volume and average depth, using the sentinel-organism Zebra mussel (Dreissena polymorpha). Results revealed a moderate contamination with summation operatorPBDE levels (BDE-17, -28, -47, -66, -71, -85, -99, -100, -138, -153, -154, -183, -190 and -209) ranging from 40 to 447ngg(-1) lipid weight which are similar to those found in environments polluted by deposition or atmospheric transport. The general order of decreasing congener contribution to the total load was BDE-47>-99>-100>-209, which closely reflected patterns observed in mussels collected in freshwater ecosystems worldwide. 相似文献
122.
Lichen Diversity and Lichen Transplants as Monitors of Air Pollution in a Rural Area of Central Italy 总被引:1,自引:0,他引:1
The results of a biomonitoring study carried out in the Municipality of Colle di Val d'Elsa (central Italy), using the diversity of epiphytic lichens and the accumulation of selected elements in thalli of the lichen Evernia prunastri transplanted in two urban sites are reported. The results indicate that the survey area suffers from different types of pollution. The main air pollutants are NO
X
and Pb. Vehicular traffic and domestic heating are the main sources of the former, and traffic and a crystal factory of the latter. Furthermore, most study area is eutrophicated due to diffuse agricultural activities and the presence of pig and sheep stockfarms. 相似文献
123.
Heikki Haapala Ryunosuke Kikuchi 《Environmental science and pollution research international》2000,7(4):189-190
A new application of the Scanning Electron Microscope (SEM) equipped with an Energy Dispersive X-ray Microanalyzer (EDX) has
been developed to study the distribution of airborne dust emissions. This technique makes it possible to identify the particles
and measure the amount of dust deposition on the surface of the biomonitoring material. Pine bark or needles and moss can
easily be used as the study material. A map indicating pollution levels and distribution can be drawn on the basis of the
measured data. 相似文献
124.
Biomonitoring is an element of environmental management that must become more sophisticated to meet the demands of legislation and public concern for environmental safety. Data collection and analysis techniques must improve if environmental scientists are to take full advantage of the information content of field and laboratory biomonitoring efforts. Issues associated with biomonitoring, which we address, include test system selection and the data characteristics of various biomonitoring techniques. We identify optimization as a possible approach to resolving conflicts between legal defensibility, scientific accuracy, and the requirements of environmental managers. 相似文献
125.
The presence of the radionuclide 99Tc in the marine environment is of concern to environmental scientists because of its conservative nature and high concentration factor in commercially valuable species. The brown seaweed Ascophyllum nodosum (Linnaeus) Le Jolis was used to biomonitor the spatial distribution of 99Tc around the Welsh coast, an area relatively unstudied with respect to this isotope. Over the course of a year an inverse relationship was observed between the 99Tc concentration in A. nodosum samples and approximate straight-line distance from Sellafield. These data show that detectable levels of a Sellafield derived radionuclide are reaching the Welsh coast despite the overall northward movement of the Sellafield plume. 相似文献