TRACE ELEMENT CONCENTRATION OF LEAF AND ASH FROM A WASTE POND AT FANKOU MINE, CHINA

2002 ◽  
Vol 12 (01n02) ◽  
pp. 53-60 ◽  
Author(s):  
S. Murao ◽  
K. Sera ◽  
S. Futatsugawa ◽  
B. Chen ◽  
X. Sun
Keyword(s):  
Trace Element ◽  
Environmental Protection ◽  
Element Concentration ◽  
Trace Element Concentration ◽  
Pixe Analysis ◽  
Environmental Cleaning ◽  
High Level

A PIXE analysis was performed at Nishina Memorial Cyclotron Center (NMCC) for some leaf and ash samples from bottom of a waste pond at the Fankou Pb-Zn mine, Guangdong, China. The ash is the product after burning "Luzhu" that is planted by the mine for the environmental cleaning purpose in the waste pond. The PIXE detected high level of zinc and lead for both of the samples. As Fankou is one of the largest Pb-Zn producer in Asia, careful and urgent treatment is necessary for the deposited ash in the pond. This analysis was performed due to a request of analysis of the Fankou mine to promote environmental protection of the area.

DETERMINATION OF TRACE ELEMENTS IN HUMAN SALIVA BY PIXE TECHNIQUE

1996 ◽  
Vol 06 (01n02) ◽  
pp. 273-276 ◽  
Author(s):  
P. HATAMI ◽  
H. PEYROVAN ◽  
H. AFARIDEH ◽  
S. SHOJAEI
Keyword(s):  
Trace Elements ◽  
Healthy Volunteers ◽  
Trace Element ◽  
Element Concentration ◽  
Trace Element Concentration ◽  
Human Saliva ◽  
Normal Range ◽  
Pixe Analysis ◽  
X Ray

Mineral trace element concentration of human saliva from healthy volunteers, were investigated by Proton-Induced X-ray Emission (PIXE) analysis. The specimens were bombarded with Proton beams of 2 MeV from a Van de Graaff accelerator at NRC . The object of this measurement was to find a normal range of trace element concentration for Iranian people.

scholarly journals Dynamics of Trace Element Concentration During Development and Excitotoxic Cell Death in the Cerebellum ofLurcherMutant Mice

2009 ◽  
Vol 19 (4) ◽  
pp. 586-595 ◽  
Author(s):  
Jörg Bäurle ◽  
Jan Kučera ◽  
Sabine Frischmuth ◽  
Manfred Lambertz ◽  
Karel Kranda
Keyword(s):  
Cell Death ◽  
Trace Element ◽  
Element Concentration ◽  
Trace Element Concentration ◽  
Excitotoxic Cell Death

Incorporation of REE into leucophanite: a compositional and structural study

2007 ◽  
Vol 71 (06) ◽  
pp. 625-640 ◽  
Author(s):  
H. Friis ◽  
T. Balić-Žunić ◽  
C. T. Williams ◽  
R. Garcia-Sanchez
Keyword(s):  
Trace Element ◽  
Element Concentration ◽  
Trace Element Concentration ◽  
Compositional Variation ◽  
Chemical Compositions ◽  
Charge Balance ◽  
Element Abundances ◽  
Chemical Factors ◽  
Crystallization Conditions ◽  
Compositional Zonation

Abstract The crystal structures of nine, and the chemical compositions of ten, natural samples of leucophanite, ideally NaCaBeSi2O6F, were investigated. The analysed samples display a large compositional variation with trace-element abundances >50,000 ppm, primarily due to rare earth elements (REE). Fromthese data, we propose a substitution scheme for the incorporation of REE for Ca, with additional Na substituting for Ca and the generation of vacancies to ensure charge balance. Compositional zonation was observed in some samples; this zonation correlates with variations in cathodoluminescence. The crystal structure of the nine analysed samples could all be refined in space group P212121. We found no evidence for a reduction of symmetry with increased trace-element concentration. Various twin combinations were observed and these seem related to crystallization conditions rather than structural or chemical factors.

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