Geochemical partitioning of actinides using sequential chemical extractions: Comparison to stable elements

1998 ◽  
Vol 234 (1-2) ◽  
pp. 251-256 ◽  
Author(s):  
M. K. Schultz ◽  
W. Burnett ◽  
K. G. W. Inn ◽  
G. Smith
Keyword(s):  
Chemical Extractions ◽  
Geochemical Partitioning ◽  
Stable Elements

High variability in geochemical partitioning of iron, manganese and harmful trace metals in sediments of the mining port of Santa Rosalia, Baja California Sur, Mexico

2014 ◽  
Vol 145 ◽  
pp. 51-63 ◽  
Author(s):  
Miguel Angel Huerta-Diaz ◽  
Albino Muñoz-Barbosa ◽  
Xose Luis Otero ◽  
Jacob Valdivieso-Ojeda ◽  
Enrique Crisanto Amaro-Franco
Keyword(s):  
Trace Metals ◽  
Baja California ◽  
High Variability ◽  
Baja California Sur ◽  
Geochemical Partitioning ◽  
Santa Rosalia ◽  
Iron Manganese

Radionuclides and stable elements in vegetation in Australian arid environments: Concentration ratios and seasonal variation

2021 ◽  
Vol 234 ◽  
pp. 106627
Author(s):  
Maria Angelica D. Rea ◽  
Mathew P. Johansen ◽  
Timothy E. Payne ◽  
Gillian Hirth ◽  
Jim Hondros ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Arid Environments ◽  
Stable Elements ◽  
Concentration Ratios

Environmental Availability of Potentially Toxic Elements in an Agricultural Mediterranean Site

2019 ◽  
Vol 25 (2) ◽  
pp. 169-178 ◽  
Author(s):  
Dimitrios Alexakis ◽  
Dimitra Gamvroula ◽  
Eleni Theofili
Keyword(s):  
Sequential Extraction ◽  
Toxic Elements ◽  
Soil Depth ◽  
Extraction Procedure ◽  
Potential Ecological Risk ◽  
Potentially Toxic Elements ◽  
Geochemical Partitioning ◽  
Exchangeable Fraction ◽  
High Bioavailability

ABSTRACT Total contents of 36 potentially toxic elements are summarized for agricultural topsoil (n = 12; soil depth = 0–20 cm), subsoil (n = 12; soil depth = 20–40 cm), and representative rock samples collected from a Mediterranean site (Megara Plain, Greece). The five-stage sequential extraction procedure for the geochemical partitioning of cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), manganese (Mn), and nickel (Ni), proposed by Tessier, was applied to topsoil and subsoil collected from the study area. Soil Cd was highly associated with exchangeable fraction, illustrating high bioavailability of this element. The order of mobility of the elements was as follows: Cd > Cu > Co > Zn > Ni > Cr > Mn. Results from sequential extraction experiments illustrated that the bioavailability of Cu, Co, and Zn is moderate, while Ni, Cr, and Mn presented low bioavailability, indicating that these elements could pose a limited threat to the quality of crops. Cadmium is the chief contamination controlling factor posing moderate potential ecological risk. The contamination sources of the examined elements are discussed.

scholarly journals On graded centres and block cohomology

2009 ◽  
Vol 52 (2) ◽  
pp. 489-514 ◽  
Author(s):  
Markus Linckelmann
Keyword(s):  
Triangulated Categories ◽  
Nilpotent Ideal ◽  
Stable Elements ◽  
Block Algebra

AbstractWe extend the group theoretic notions of transfer and stable elements to graded centres of triangulated categories. When applied to the centre Z*(Db(B) of the derived bounded category of a block algebra B we show that the block cohomology H*(B) is isomorphic to a quotient of a certain subalgebra of stable elements of Z*(Db(B)) by some nilpotent ideal, and that a quotient of Z*(Db(B)) by some nilpotent ideal is Noetherian over H*(B).

scholarly journals ON UNIVERSALLY STABLE ELEMENTS

1997 ◽  
Vol 48 (4) ◽  
pp. 493-498 ◽  
Author(s):  
IAN J. LEARY ◽  
BJ$$$RN SCHUSTER ◽  
NOBUAKI YOGITA
Keyword(s):  
Stable Elements

Distribution of radiocesium and stable elements within a pine tree

2011 ◽  
Vol 146 (1-3) ◽  
pp. 326-329 ◽  
Author(s):  
S. Yoshida ◽  
M. Watanabe ◽  
A. Suzuki
Keyword(s):  
Pine Tree ◽  
Stable Elements

scholarly journals Characteristics of Interlayer Materials in Non-Allophanic Volcanic Ash and Red Yellow Soils from Japan

2005 ◽  
Vol 5 (1) ◽  
pp. 1-23
Author(s):  
Anabella Tulin ◽  
Keyword(s):  
Iron Oxides ◽  
Volcanic Ash ◽  
Sodium Citrate ◽  
Citrate Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Chemical Extractions ◽  
Oxalate Solution

The characteristics and properties of interlayer materials from 10 non-allophanic (Melanudand) and red yellow soils (Alfisols and Ultisols) from three locations in Japan were studied by chemical extractions and x-ray diffraction (XRD) analyses. Allophane was dissolved from clay samples using 0.15 M acid oxalate solution while silicon and aluminum were dissolved using both 0.15 M acid oxalate and 0.3 M sodium citrate solutions. XRD analyses were done for the treated and untreated samples. For the chemically extracted samples, the clay samples were treated with bicarbonate citrate solution for the removal of iron oxides after the dissolution treatments then saturated with K and Mg ions for XRD analyses. Results of the XRD patternd of the untreated and treated samples indicated the interlayer materials as a hydroxy-interlayered form for vermiculite (HIV). Between the two dissolution treatments, the 0.3 M sodium citrate treatment was found to be more effective in removing the interlayer materials than the 0.15 M acid oxalate treatment by allowing interlayer expansion and collapse.

Characterization of soil phosphorus in a fire-affected forest Cambisol by chemical extractions and 31P-NMR spectroscopy analysis

2010 ◽  
Vol 408 (16) ◽  
pp. 3342-3348 ◽  
Author(s):  
María-Belén Turrion ◽  
Francisco Lafuente ◽  
María-José Aroca ◽  
Olga López ◽  
Rafael Mulas ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
31P Nmr ◽  
Soil Phosphorus ◽  
31P Nmr Spectroscopy ◽  
Spectroscopy Analysis ◽  
Chemical Extractions
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