Results 261 to 270 of about 2,324,089 (344)

Determination of exchangeable acidity and exchangeable aluminium in hill soils part 1 exchangeable acidity

Communications in Soil Science and Plant Analysis, 1985
Abstract Exchangeable acidity of soils has previously been measured by titration of soil extracts to a phenolphthalein endpoint at pH 8.3. The use of standard hydrogen and aluminium solutions indicates that this is inaccurate and a preferred technique, differential potentiometric titration is proposed.
K.A.B. Logan   +2 more
openaire   +2 more sources

Interorgan amino acid exchange

Current Opinion in Clinical Nutrition and Metabolic Care, 2000
This review is concerned with the status of our current research related to the exchange of amino acids across organs. Accumulation of knowledge regarding how amino acid pools are maintained within the body remains a work in progress. In recent years, the use of organ balance measurement techniques in combination with isotopic tracers has much ...
TESSARI, PAOLO, G. GARIBOTTO
openaire   +5 more sources

Exchangeable aluminium and acidity in Acrisols and Ferralsols of the north-west highlands of Cameroon

, 2020
Diminishing crop yields in the Western Highlands of Cameroon is largely attributed to soil acidity. Soil characterization was carried out on six highly weathered soils developed from pyroxene-rich basalt in the North-West Region (NWR) of Cameroon to ...
B. Yerima   +3 more
semanticscholar   +1 more source

Deuterium exchange during acid-demineralisation

Geochimica et Cosmochimica Acta, 1988
Isotopic analyses of residues prepared by demineralisation of the Murchison meteorite using D-labelled reagents provide evidence for measurable exchange of H-isotopes between residue and reagents. Precise quantification of this effect is precluded by substantial inhomogeneity of the meteoritic organic matter.
J F, Kerridge, S, Chang, R, Shipp
openaire   +2 more sources

Exchange characteristics of monocarboxylic acids and monosulfonic acids onto anion-exchange resins

Journal of Colloid and Interface Science, 2004
In the previous paper (N. Kanazawa, K. Urano, N. Kokado, Y. Urushigawa, J. Colloid Interface Sci. 238 (2001) 196), the equilibria of propionic acid and benzoic acid adsorption onto three anion-exchange resins were investigated, and an equation was proposed that summed of the physical adsorption of the carboxylic acid molecule and the ion exchange of ...
Nobuhiro, Kanazawa   +3 more
openaire   +2 more sources

Anion exchange in acetic acid solutions

Analytica Chimica Acta, 1971
Abstract The adsorbabilities of 65 elements in water-acetic acid medium on the anionexchanger Dowex 1-X8 have been investigated in the region 2–17.4 M acetic acid. Examples of possible individual separations of elements are given, namely : Cu-Zn, Mn-Cu-Zn, Na-As-Cu and U-Np. A separation of the elements Ag, As, Au, Br. Co, Cu, K, Mn, Mo, Na, Sc and
S.K. Jha, F. De Corte, J. Hoste
openaire   +1 more source

Home - About - Disclaimer - Privacy