scholarly journals A Study Of Major And Trace Element Accumulation In Humic Acids

2015 ◽  
Vol 1 ◽  
pp. 76
Author(s):  
Diana Dudare ◽  
Oskars Purmalis ◽  
Maris Klavins
Keyword(s):  
Trace Element ◽  
Humic Acids ◽  
Element Concentration ◽  
Inorganic Ions ◽  
Anthropogenic Pollution ◽  
Major And Trace Elements ◽  
Element Distribution ◽  
Trace Element Distribution ◽  
Factors Affecting ◽  
X Ray

It has been widely studied recent as well as historic accumulation of elements in peat profiles depending on intensity of anthropogenic pollution and thereby peat profiles serve as archives for research of environmental change. Peat ability to accumulate major and trace elements depends on the character of element supply, potency of metal ions to bind functionalities in the peat structure, pH reaction, oxygen presence, presence of complexing compounds, inorganic ions and many other factors. The aim of this study is to assign major and trace element distribution in humic acids (HA) for two well characterized ombrotrophic peat profiles of Eipurs and Dzelve Bog and analyse factors affecting element concentration in peat humic acids. Elemental and functional analysis of the isolated HAs was done, using total reflection X – ray spectrometry, Elemental Analyzer Model EA – 1108, Thermospectronic Helios γ UV (Thermo Electron Co.) spectrophotometer, Total acidity method.

Quantitative elemental analysis of bovine ovarian follicles using X-ray fluorescence imaging

Metallomics ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 828-836 ◽  
Author(s):  
M. J. Ceko ◽  
K. Hummitzsch ◽  
N. Hatzirodos ◽  
R. J. Rodgers ◽  
H. H. Harris
Keyword(s):  
Trace Element ◽  
Fluorescence Imaging ◽  
Elemental Analysis ◽  
Ovarian Follicles ◽  
Element Distribution ◽  
Trace Element Distribution ◽  
X Ray ◽  
Quantitative Elemental Analysis ◽  
Biological Structures

Highlights how quantitative XRF can differentiate between biological structures in bovine ovaries on the basis of trace element distribution alone.

scholarly journals Magnetic susceptibility and trace element distribution in compost size fractions .

2014 ◽  
Vol 4 ◽  
Author(s):  
Remigio Paradelo ◽  
María Teresa Barral
Keyword(s):  
Trace Elements ◽  
Magnetic Susceptibility ◽  
Trace Element ◽  
Anthropogenic Pollution ◽  
Element Distribution ◽  
Trace Element Distribution ◽  
Size Fractions ◽  
Trace Element Contamination ◽  
The Relationship ◽  
Distribution Of Trace Elements

Magnetic susceptibility can be used for assessing anthropogenic pollution in solid matrices, including soils and composts. This work studies the distribution of trace elements and magnetic susceptibility in the different size fractions of six composts, for the development of measures aimed at reducing compost pollution at the production stage. The results showed that magnetic susceptibility decreased with increasing particle size in all composts, and the same was true for most trace element concentrations. Magnetic susceptibility was significantly correlated with Fe, as well as with Cu, Zn, Pb, Cr and Ni, which proves the relationship between the presence of ferric particles and trace element contamination in compost. Our results suggest that the association of trace elements and magnetic susceptibility is a characteristic feature in municipal solid waste composts.

scholarly journals Micro x-ray fluorescence analysis of trace element distribution in frozen hydrated HeLa cells at the P06 beamline at Petra III

2021 ◽  
Vol 16 (1) ◽  
pp. 011004
Author(s):  
Christoph Rumancev ◽  
Tobias Vöpel ◽  
Susan Stuhr ◽  
Andreas von Gundlach ◽  
Tobias Senkbeil ◽  
...  
Keyword(s):  
Trace Element ◽  
Hela Cells ◽  
Fluorescence Analysis ◽  
Element Distribution ◽  
Trace Element Distribution ◽  
X Ray

Methylmercury and Trace Element Distribution in the Organs of Stenella coeruleoalba Dolphins Stranded on the French Mediterranean Coast

2014 ◽  
Vol 8 (1) ◽  
pp. 35-48 ◽  
Author(s):  
Emmanuel Wafo ◽  
Véronique Risoul ◽  
Thérèse Schembri ◽  
Véronique Lagadec ◽  
Frank Dhermain ◽  
...  
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Marine Pollution ◽  
Element Distribution ◽  
Mediterranean Coast ◽  
Trace Element Distribution ◽  
Slight Reduction ◽  
Stenella Coeruleoalba ◽  
Contamination Levels

The main objective of this study was to evaluate the contamination by mercury (Hg), methylmercury (Me-Hg), cadmium (Cd), selenium (Se), zinc (Zn), copper (Cu), iron (Fe) and manganese (Mn) in dolphins stranded on the French Mediterranean coast. The distributions of these contaminants in the organs of dolphins have also been studied. Overall, contamination levels varied according to the following sequence: liver > kidney > lung > muscle, except for cadmium (kidney > liver > lung > muscle). Size and sex of animals were also considered. Young dolphins were less impacted with trace elements than adults, except for copper. Among the studied parameters, the most important appeared to be the size of mammals. In addition, in the case of mercury and selenium, the sex of mammals seemed to be also relevant. The correlations between the concentrations of trace elements suggest the existence of detoxification processes. Since 1990s, using dolphins for tracing marine pollution, a slight reduction in the burden of the considered trace elements could be noted.

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