Zobrazeno 1 - 10
of 101
pro vyhledávání: '"V. C. Farmer"'
Publikováno v:
Journal of Applied Chemistry. 13:17-27
Infra-red absorption spectra, differential thermal and differential thermogravimetric curves, and some new X-ray diffraction data are presented for synthetic or natural specimens of variscite, metavariscite, strengite, phosphosiderite, barrandite, le
Autor:
David G. Lumsdon, V. C. Farmer
Publikováno v:
European Journal of Soil Science. 53:671-674
Summary Gustafsson et al. in a recent paper in this Journal reported the effects of adding HCl, AlCl3 and Si(OH)4 on the pH and concentrations of Al and Si in 1:1 soil:solution systems at three different temperatures, using samples of soil from an al
Autor:
David G. Lumsdon, V. C. Farmer
Publikováno v:
European Journal of Soil Science. 52:177-188
Summary The podzolization process is examined in the light of measurements of the solubility characteristics of aluminium fulvate, the extent of dissolution of a proto-imogolite sol by fulvic acid, the adsorption capacity of proto-imogolite for fulvi
Autor:
V. C. Farmer
Publikováno v:
Clay Minerals. 33:601-604
Infrared (IR) spectra of well-ordered kaolinites generally show four OH-stretching frequencies, near 3697, 3670, 3652 and 3620 cm (super -1) . Raman spectra of the same kaolinites mostly show an additional band near 3686 cm (super -1) , which, in the
Autor:
V. C. Farmer, David G. Lumsdon
Publikováno v:
European Journal of Soil Science. 48:115-120
Summary The amounts of aluminium liberated from a proto-imogolite (P-I) sol by 1–3 mM oxalate at pH 4·8–7·1 are found to be in excellent agreement with those calculated on the basis of the solubility product of the P-I sol, and the stability co