KSIĄŻKI POWIĄZANE ZE SŁOWEM «ALLOPHANE»
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1
Characterisation and Engineering Properties of Natural Soils
L.D. Wesley University of Auckland, Auckland, New Zealand ABSTRACT: The
clay mineral allophane plays an important role in governing the characteristics of
certain clays of volcanic origin. These clays occur when non-crystalline parent ...
2
The chemistry of clay minerals
ALLOPHANE Allophane is a fine-grained amorphous material composed largely
of silica, alumina and water. It has both a glassy and an earthy appearance.
Material with this composition is clear to white in color; however, because of the ...
Charles E. Weaver, Author Unkown Author, Lin Davis Pollard, 2011
3
Principles of Soil Chemistry, Fourth Edition
The most important type of clay in this group is perhaps allophane. It is found
especially in volcanic ash soils. The name allophane was first introduced by
Stromeyer and Hausmann in 1861 for hydrous aluminosilicates occurring in
nature.
4
Clays and Clay Minerals of Japan
The high phosphate retention (307-402 mmole P per 100 g clay) and very low
ratio of CEC to phosphate retention (0065-0186) were considered to characterize
allophane. Wada (1959) studied the reaction of 1 M ammonium phosphate with ...
T. Sudo, S. Shimoda, 1978
5
Environmental Soil Science, Third Edition
solution, Wada and Greenland (1970) succeeded in separating several types of
noncrystalline alumino-silicates, but these can only be considered allophane-like
constituents. They have not been detected in soils, hence the possibility exists ...
6
Principles of Soil Chemistry, Third Edition,
The most important type of clay in this group is perhaps allophane. It is found
especially in volcanic ash soils. The name allophane was first introduced by
Stromeyer and Hausmann in 1861 for hydrous aluminosilicates occurring in
nature.
7
New Zealand Journal of Agricultural Research
(Papakauri topsoil, Kiripaka topsoil and subsoil) . (3) High retention, more than
2815 mg P^Or,/100 g, shown by soil horizons with more than 45% clay,
consisting of allophane only or of allophane with small amounts of gibbsite. The
Patua ...
8
Ecological Significance of the Interactions among Clay ...
37 SORPTION OF COPPER AND CADIVHUM BY ALLOPHANE- HUMIC
COMPLEXES G. Yuan, H.J. Percival, B.K.G. Theng and R.L. Parfitt Landcare
Research, Private Bag 11052, Palmerston North, New Zealand We have
investigated the ...
9
Handbook of Soil Sciences: Properties and Processes, Second ...
No −78 ppm resonance is observed in the 29Si NMR spectra, as in imogolite,
and the changes in NMR spectra with heating confirm that the hydrous
feldspathoid allophane differs in structure from both proto-imogolite and kaolin
defect ...
Pan Ming Huang, Yuncong Li, Malcolm E. Sumner, 2011
10
Handbook of Clay Science
TABLE 2.2 Types and Structural Characteristics of Allophane and Imogolite
Imogolite-like Halloysite-like Silica Characteristics Imogolite allophane (soil)a
allophane (soil)b Springs allophanec Al/Si ratio 2 $2 $1 1.1–1.9 Infrared bands (
cmÀ1) ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «ALLOPHANE»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
allophane w wiadomościach.
16 treasures for turning sweet 16
It is made from a new and eco-friendly material called “soil ceramics” and a special clay mineral called “allophane,” which has innumerable ... «Inquirer.net, Paz 12»
Scientists aim to curb lake's algal problems
... an aluminium-based chemical commonly used in drinking water treatment and swimming pools; allophane – a natural volcanic ash from past ... «Waikato Times, Wrz 11»
Pain in the ash?: Mount Redoubt's messy reminder may have an …
He explained that the allophane, a mineral present in ash, can bind up phosphorous, a key nutrient needed for plant growth. If too much is ... «Kenai Peninsula Online, Lut 09»
