trace element Articles
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Linking trace element variations with macronutrients and major cations in marine mussels Mytilus edulis and Perna viridis
Marine mussels have long been used as biomonitors of contamination of trace elements, but little is known whether variation in tissue trace elements is significantly associated with those of macronutrients and major cations. Here, we examined the variability of macronutrients and major cations and their potential relationships with bioaccumulation of trace elements. We analyzed the ...
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Histochemical properties and trace element concentrations in Parietaria L.from urban sites (Palermo, Italy)
We examined leaf and pollen histochemical properties in Parietaria L. and measured trace element concentrations in urban sites in Palermo, Sicily, affected by different stress valence levels. Urban pollution affects histochemistry macro-, micro-, and toxic element concentrations in Parietaria. We therefore decided to determine whether this plant can be used as a simple biomonitor or ...
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The use of assemblage models to describe trace element partitioning, speciation and fate: A review
The fate of trace elements in soils, sediments and surface waters is largely determined by their binding to reactive components of which organic matter, metal oxides and clays are considered most important. Assemblage models, combining separate mechanistic complexation models for each of the reactive components, can be used to predict the solid‐solution partitioning and speciation of trace ...
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Trace elements - controlling emissions from coal combustion
International and national legislation is increasingly being applied to trace element emissions. Although emissions have decreased for a variety of reasons in many developed countries, continued use of coal and more successful control strategies in other sectors mean that coal combustion is still a relatively important source of some trace elements, especially mercury. Existing pollution control ...
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Alleviation of environmental risks associated with severely contaminated mine tailings using amendments: Modeling of trace element speciation, solubility, and plant assssccumulation
Tailings are considered one of the most relevant sources of contamination associated with mining activities. Phytostabilization of mine spoils may need the application of the adequate combination of amendments to facilitate plant establishment and reduce their environmental impact. Two pot experiments were set up to assess the capability of 2 inorganic materials (calcium carbonate and a red ...
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Atmospheric concentration and fluxes of trace elements in Visakhapatnam City of India
Airborne PM10 samples were collected during winter and summer at three different sites in a coastal city, Visakhapatnam, India. Average individual trace element concentrations fluctuated between 19 ng m−3 (Cd) and 4,802 ng m−3 (Zn). Average trace element concentrations for winter were observed higher than those of summer. Dry deposition flux was estimated using metal concentration in ambient air ...
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Environmental pollution and its effects on living matter
The present knowledge of elements essential for life is summarised. Pollution of air, water and soil can modify the availability of elements essential to living matter. Because of narrow range of adequacy for most species this can result in different abnormalities. Among human activities which mobilise large amount of elements, a significant role is played by energy production and ...
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How are trace elements mobilized during the postweaning fast in northern elephant seals?
Northern elephant seal (Mirounga angustirostris) pups undergo a substantial intertissue reorganization of protein, minerals, and other cellular components during their postweaning development, which might entail the mobilization of associated contaminants.The authors investigated the changes in concentrations of 11 elements (Ca, Cd, Cr, Cu, Fe, Hg, Ni, Pb, Se, V, and Zn) in a longitudinal study ...
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Element-enrichment factors in Parmotrema bangii and Cryptomeria japonica of Portuguese islands of the central North Atlantic
Owing to their abundance and ability to accumulate airborne elements, the epiphytic lichen Parmotrema bangii (Vain.) Hale and bark from its phorophyte, the Japanese cedar Cryptomeria japonica (L. fil.) D. Don, were chosen as atmospheric biomonitors and collected at five islands of the Azores archipelago, in the central North Atlantic - Sao Miguel and Santa Maria (eastern group); Terceira, Sao ...
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Impact of Redox Cycles on manganese, iron, cobalt, and lead in Nodules
Redox processes are responsible for Fe and Mn segregation as Fe–Mn oxide coatings or nodules. These nodules are also trace element scavengers in soils. Redox processes are of particular importance in seasonally saturated soil containing naturally high concentrations of trace metals. We investigated the dynamics of Fe–Mn nodules and two associated trace elements, Co and Pb, under controlled redox ...
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Assessment of Trace‐Element Impacts on Agricultural Use of Water from the Dan River following the Eden Coal Ash Release
Catastrophic events require rapid, scientifically sound decision‐making to mitigate impacts on human welfareandthe environment. The objective of this study was to analyze potential impacts of coal‐ash‐derived trace elements on agriculture following a 35,000‐tonne release of coal ash into the Dan River at the Duke Energy Steam Station in Eden, NC. We performed scenario calculations to assess ...
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Determination of trace elements composition in dawadawa, a food condiment used in West and Central Africa
Dawadawa, obtained by alkaline fermentation of the matured dawadawa pod, is a culinary product used to enhance taste, flavour and intensify meatiness in soups, sauces and other dishes in West and Central Africa. It is believed to cure cholera, stomachache, diarrhea, bronchitis, pneumonia, leprosy, hypertension, and pain in the bones. The trace element contents of the fermented dawadawa pods were ...
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Geochemical classification of groundwater using multivariate statistical analysis in Latvia
Multivariate statistical methods – principal component analysis (PCA) and hierarchical cluster analysis (HCA) – are applied to identify geochemically distinct groundwater groups in the territory of Latvia. The main processes observed to be responsible for groundwater chemical composition are carbonate and gypsum dissolution, fresh and saltwater mixing and ion exchange. On the basis of major ...
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Measurement of Trace Elements in Fruit Juice and Various Food Matrices Using Ultrasonic Nebulization with ICP-AES Detection
Consumers have become more concerned about the levels of potentially toxic trace elements such as arsenic, cadmium, and lead in beverages and food. Of specific concern are products intended for consumption by children. Reliable and precise methods of food analysis are important to maintain the safety of the food supply. In addition, accurate data is necessary to comply with food labeling ...
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Study on air pollution in Beijing's major industrial areas using multielements in biomonitors and NAA techniques
Three kinds of plant leaves, Chinese white poplar, arborvitae and pine needles were evaluated as a biomonitor for air pollution studies. Thirty-two trace elements have been determined by using relative and the K0 methods of instrumental Neutron Activation Analysis (NAA). The results indicated that Chinese white poplar leaves are a good biomonitor in particular seasons and the pine needles are ...
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Zebra mussels (Dreissena polymorpha) as a biomonitor of trace elements along the southern shoreline of lake michigan
The invasive zebra mussel (Dreissena polymorpha) has become an accepted biomonitor organism for trace elements, but it has yet to be studied along the Lake Michigan shoreline. Likewise, the relationships between tissue concentrations of elements, organism size and sediment concentrations of elements have not been fully explained. This study found that a variety of allometric variables such as ...
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Geochemistry of trace elements in paddy (rice) soils of Sri Lanka – implications for iodine deficiency disorders (IDD)
Iodine Deficiency Disorders (IDD) are a common health problem prevalent in the wet zone of Sri Lanka with a prevalence of >25 of the population. In comparison, in the dry zone of Sri Lanka IDD occurs in 25 of the population) show low levels of Rb, Sr, Ba, and Mn and higher levels of V, Cr, Co, Ni, Cu, Zn and Pb as compared with moderate and non-goitre areas. Factor analysis was used to exploit ...
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Project - Valorgas
AeroThermal has made a major contribution to a study examining the effectiveness of various pre-treatments to enhance the bio-methane yield from food waste. Our contribution was to examine the effect of autoclaving on the digestibility of food waste. The studies, which were partially funded by the EU, included small scale tests in Finland on material processed in our pilot scale autoclave in ...
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Fractionation of uranium and other trace elements in soil samples collected in selected regions of the Republic of Kazakhstan
To determine the specific chemical forms of trace elements and to study of their mobility/availability in soil, samples collected in the Republic of Kazakhstan were analysed using the revised BCR protocol. A study was made with dependence of the mobility of different elements of interest on digestion procedures for collected soil samples and Standard Reference Material. The concentrations of the ...
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Review of spatial variations in water quality in the Gediz River
The Gediz River is one of the most important and main water source for the Gediz Basin of the Aegean region and Turkey. In this study, 18 water samples were collected from the source to the end of the river. Change in water quality, some trace elements and heavy metal contents of the Gediz River were determined. Analysis of the Fe, Cu, Mn, Zn, Pb, Cr, Co, Cd and Ni showed that the quantity of Fe ...
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