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

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.

Download Full-text

Trace Element Distribution in Virgin Profiles Representing Four Great Soil Groups

Soil Science Society of America Journal ◽

10.2136/sssaj1955.03615995001900030022x ◽

1955 ◽

Vol 19 (3) ◽

pp. 340-344 ◽

Cited By ~ 28

Author(s):

J. R. Wright ◽

R. Levick ◽

H. J. Atkinson

Keyword(s):

Trace Element ◽

Element Distribution ◽

Trace Element Distribution ◽

Soil Groups

Download Full-text

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

Open Environmental Sciences ◽

10.2174/1876325101408010035 ◽

2014 ◽

Vol 8 (1) ◽

pp. 35-48 ◽

Cited By ~ 3

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.

Download Full-text