- exchangeable ions
- Экология: обменные ионы
Универсальный англо-русский словарь. Академик.ру. 2011.
exchangeable ions
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ion-exchange reaction — ▪ chemical reaction Introduction any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions (ion)) that involves an exchange of one or more ionic components.… … Universalium
exchange capacity — 1. The amount of exchangeable ions measured in moles of ion change per kilogram of solid material at a given pH. Synonymous with ion exchange capacity [22]. 2. The total ionic charge of the adsorption complex active in the adsorption of… … Lexicon of Cave and Karst Terminology
clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… … Universalium
Alkali soils — Alkali, or alkaline, soils are clay soils with a relatively high exchangeable sodium percentage, a relative high pH (> 9), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 m. depth (in… … Wikipedia
Ion — Cation and Anion redirect here. For the particle physics/quantum computing concept, see Anyon. For other uses, see Ion (disambiguation). Hydrogen atom (center) contains a single proton and a single electron. Removal of the electron gives a cation … Wikipedia
Nuclear magnetic resonance spectroscopy of nucleic acids — Nuclear magnetic resonance spectroscopy of nucleic acids, often referred to as nucleic acid NMR, is the use of nuclear magnetic resonance spectroscopy to obtain information about the structure and dynamics of nucleic acid molecules, such as DNA… … Wikipedia
Cation exchange capacity — In soil science, cation exchange capacity (CEC) is the capacity of a soil for ion exchange of positively charged ions between the soil and the soil solution. (A positively charged ion, which has fewer electrons than protons, is known as a… … Wikipedia
duricrust — /door i krust , dyoor /, n. a hard crust that forms on or in soil in semiarid climates owing to cementation of soil particles. Cf. caliche, hardpan (defs. 1, 2). [ < L dur(us) hard + I + CRUST] * * * ▪ geology Introduction surface or near… … Universalium
catalysis — catalytic /kat l it ik/, adj., n. catalytical, adj. catalytically, adv. /keuh tal euh sis/, n., pl. catalyses / seez /. 1. Chem. the causing or accelerating of a chemical change by the addition of a catalyst. 2. an action between two or more… … Universalium
Thiol — with a blue highlighted sulfhydryl group. In organic chemistry, a thiol ( … Wikipedia
Stilbite — from Kiui Island, Alaska, USA General Category Zeolite Chemical formul … Wikipedia
