نتایج جستجو برای: biomonitor
تعداد نتایج: 224 فیلتر نتایج به سال:
Evaluation of trace metal pollution in an environmentally complex context may require the use a suite indicators. Common reed, Phragmites australis, is well-known biomonitor sediment pollution. Here, we show its potential for also assessing air The plant panicles, holding silky hairs with high surface to volume ratio, are appropriate collectors atmospheric contaminants, which perform independen...
Abstract Potentially toxic elements (PTEs) from mining industries pollute the surrounding environment and threaten health of communities. Worldwide, exotic indigenous trees are being recommended for green belts to trap dust thereby limit dispersion PTEs. This study compares potential ( Eucalyptus grandis E. camaldulensis ) native Brachystegia longifolia tree species in Zambia accumulate PTEs ev...
Historical mining activities cause widespread, long-term trace metal contamination of freshwater ecosystems. However, measuring bioavailability has proven difficult, because it depends on many factors, not least concentrations in water, sediment and habitat. Simple tools are needed to assess bioavailabilities. The use biomonitors been widely advocated provide a realistic measure. To date there ...
Traffic-related air pollution is one of the most relevant environmental problems in urban areas. Several cryptogams (i.e., lichens and mosses) vascular species have been employed to monitor since they allow assessment quality a large number sampling sites simultaneously at low cost. In cities, vehicle emissions are frequently major source along with residential energy (for cooking heating), ind...
In assessing the distributions of trace metals in aquatic environments as a prerequisite to any study of the variation of local toxic metal contamination over space and time, it is tempting to measure dissolved and/or sediment concentrations. A third and preferred alternative, however, is the measurement of accumulated trace metal concentrations in selected organisms, termed biomonitors. Such c...
The freshwater mussel Anodonta cygnea is commonly used as a model organism for biomineralization studies, its peculiar morphofunctional properties also make it an excellent environmental biomonitor. The first detailed on the calcareous concretions from gill and mantle tissue, as well as fluids of the freshwater bivalve A. cygnea, supported by histological, scanning, spectrometry, and spectrosco...
In this study, the branch, leaves, flowers, roots and mixed all parts of different nine Euphorbia species were analyzed for their trace element contents by using ICP-MS. The samples were digested by concentrated nitric acid and hydrogen peroxide in a microwave by ICP-MS before the analysis. The accuracy and precision of the method was evaluated by CRM 1573a Tomato Leaves. Trace element contents...
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