scholarly journals Speciation and sorption structure of diphenylarsinic acid in soil clay mineral fractions using sequential extraction and EXAFS spectroscopy

2019 ◽  
Vol 20 (2) ◽  
pp. 763-774 ◽  
Author(s):  
Meng Zhu ◽  
Xuefeng Hu ◽  
Chen Tu ◽  
Yongming Luo ◽  
Ruyi Yang ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Clay Mineral ◽  
Exafs Spectroscopy ◽  
Soil Clay

Impact of potassium fertilization and potassium uptake by plants on soil clay mineral assemblage in South Brazil

2016 ◽  
Vol 406 (1-2) ◽  
pp. 157-172 ◽  
Author(s):  
Diovane Freire Moterle ◽  
João Kaminski ◽  
Danilo dos Santos Rheinheimer ◽  
Laurent Caner ◽  
Edson Campanhola Bortoluzzi
Keyword(s):  
Clay Mineral ◽  
Mineral Assemblage ◽  
Potassium Uptake ◽  
Potassium Fertilization ◽  
Clay Mineral Assemblage ◽  
Soil Clay ◽  
South Brazil

Sorption of Imidacloprid on Soil Clay Mineral and Organic Components

1998 ◽  
Vol 62 (4) ◽  
pp. 911-915 ◽  
Author(s):  
L. Cox ◽  
W. C. Koskinen ◽  
R. Celis ◽  
M. C. Hermosin ◽  
J. Cornejo ◽  
...  
Keyword(s):  
Clay Mineral ◽  
Organic Components ◽  
Soil Clay

Anthropic acceleration of a natural clay mineral reaction in marshland soils (Atlantic Coast, France)

Clay Minerals ◽  
2007 ◽  
Vol 42 (1) ◽  
pp. 1-12 ◽  
Author(s):  
V. Mathé ◽  
A. Meunier ◽  
F. Lévêque
Keyword(s):  
Clay Mineral ◽  
Atlantic Coast ◽  
Mineralogical Composition ◽  
Natural Clay ◽  
Natural Conditions ◽  
Mineral Reaction ◽  
Whole Process ◽  
Smectite Layer ◽  
Soil Clay ◽  
Mineral Changes

AbstractSoil clay minerals in recent natural polders react on a human timescale in response to local environmental conditions. With increasing age, the mineral reaction leads to the dissolution of the chlorite component and a composition change of the different illite-smectite mixed-layer minerals (I-S MLMs): i.e. smectite layer content decreases and illite content increases. The process of oxidation, which is proven by magnetic susceptibility to trigger clay mineral reaction, changes the mineralogical composition of the sediment above the redox front. The mineral changes appear to be a non-linear function of time. In natural conditions the process lasts >1000 y. However, anthropoic forcing such as artificial drainage accelerates the oxidation reaction to complete the whole process in a few tens of years.

Comparative study of moisture release behaviour of soils, soil clays and pure clays

Soil Research ◽  
1981 ◽  
Vol 19 (1) ◽  
pp. 79
Author(s):  
B Datta ◽  
OP Singh
Keyword(s):  
Comparative Study ◽  
Clay Mineral ◽  
Characteristic Curve ◽  
Lateritic Soil ◽  
Black Cotton Soil ◽  
Soil Clays ◽  
Mineral Constituent ◽  
Moisture Characteristic ◽  
Soil Clay ◽  
Clay Mineral Composition

The moisture release curves of a black cotton soil and a lateritic soil, their clay fractions and two pure clays (bentonite, kaolinite) containing mineral species similar to those in the clay fractions were studied in relation to clay mineral composition. While the dominant clay mineral did not solely govern the moisture characteristic curve of a soil, there was a strong similarity between the curves of a pure clay mineral and a soil clay dominated by that mineral. This similarity may be used to identify the dominant mineral constituent of an unknown soil clay.

CLAY MINERALS IN CANADIAN SOILS: THEIR ORIGIN, DISTRIBUTION AND ALTERATION

1979 ◽  
Vol 59 (1) ◽  
pp. 37-58 ◽  
Author(s):  
H. KODAMA
Keyword(s):  
Clay Minerals ◽  
Clay Mineral ◽  
Clay Mineralogy ◽  
Limited Extent ◽  
Podzolic Soils ◽  
The Past ◽  
Canadian Soils ◽  
Soil Clay ◽  
Mineral Alteration ◽  
Physiographic Regions

A literature survey was conducted to collect mineralogical data of Canadian soils. In the past 40 years, clay mineralogical data of varying precision have been reported for approximately 1200 samples from more than 380 pedons. Based on the data, (1) the distribution of clay minerals was examined physiographically, (2) an investigation was made to relate specific changes in clay minerals of pedons within a physiographic region to taxonomy, and (3) a comparison was made of the clay mineral alteration in the pedons of the same order in different physiographic regions. The results indicated that virtually no or minor alterations of clay minerals had occurred in pedons of many Canadian soils with the exception of Podzolic soils and to a limited extent, Brunisolic, Luvisolic and Gleysolic soils. In the Podzolic soils, chlorite disappeared or diminished in surface horizons, and micas and possibly some chlorites were transformed by hydration into partially or fully expansible clay minerals. For general soil clay mineral characterization, the analyses of one subsoil sample of a pedon would appear to be adequate for most soil orders. However, clay mineralogy has a potential to go much further in distinguishing minor changes and subtle differences in clay minerals. Such information would be useful in specific studies of soil development and in assessing trends in early stages of weathering. The current priorities of soil clay mineralogy in Canada should be improvement of methods of quantification and increasing the standardization of methodology and interpretation of results.

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