| 释义 |
ionic strength
ionic strength[ī′än·ik ′streŋkth] (physical chemistry) A measure of the average electrostatic interactions among ions in an electrolyte; it is equal to one-half the sum of the terms obtained by multiplying the molality of each ion by its valence squared. ionic strength
i·on·ic strength (I), symbolized as Γ/2 or I and set equal to 0.5Σmizi2, where mi equals the molal concentration and zi the charge of each ion present in solution; if molar concentrations (ci) are used instead of molality (and the solution is dilute), then I = 0.5(1/ρo)Σcizi2 where ρo is the density of the solvent; a number of biochemically important events (for example, protein solubility and rates of enzyme action) vary with the ionic strength of a solution.i·on·ic strength (I) (ī-on'ik strengkth) Symbolized as Γ/2 or I and set equal to 0.5Σmizi2, where mi equals the molar concentration and zi the charge of each ion present in solution; if molar concentrations (ci) are used instead of molality (and the solution is dilute), then I = 0.5(1/ρo)Σcizi2 where ρo is the density of the solvent; a number of biochemically important events (e.g., protein solubility and rates of enzyme action) vary with the ionic strength of a solution. |