aqueous solution

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1. a homogeneous mixture of one or more substances (solutes) dispersed molecularly in a sufficient quantity of dissolving medium (solvent).
2. in pharmacology, a liquid preparation of one or more soluble chemical substances, which are usually dissolved in water. For names of specific solutions, see under the name.
3. the process of dissolving or disrupting.
4. a loosening or separation.

Preparation of Solutions. Formula for preparing solutions from a pure drug:

For example, to prepare 2000 mL of a 2 per cent solution from boric acid crystals, the proportion would be

Formula for preparing solutions from stock solutions:

For example, to prepare 1000 mL of a 2 per cent solution from a 4 per cent stock solution, the proportion would be
aqueous solution one in which water is used as the solvent.
BCG solution an aqueous suspension of bacille Calmette-Guérin for instillation into the bladder to activate the immune system in treatment of superficial bladder cancers. It reduces the risk of a subsequent bladder cancer developing, although the exact mechanism of action is unknown.
buffer solution one that resists appreciable change in its hydrogen ion concentration (pH) when acid or alkali is added to it.
colloid solution (colloidal solution) imprecise term for colloid (def. 3).
hyperbaric solution one having a greater specific gravity than a standard of reference.
hypertonic solution one having an osmotic pressure greater than that of a standard of reference.
hypobaric solution one having a specific gravity less than that of a standard of reference.
hypotonic solution one having an osmotic pressure less than that of a standard of reference.
isobaric solution a solution having the same specific gravity as a standard of reference.
isotonic solution one having an osmotic pressure the same as that of a standard of reference.
molar solution a solution in which each liter contains 1 mole of the dissolved substance; designated 1 M. The concentration of other solutions may be expressed in relation to that of molar solutions as tenth-molar (0.1 M), etc.
normal solution a solution in which each liter contains 1 equivalent weight of the dissolved substance; designated 1 N.
ophthalmic solution a sterile solution, free from foreign particles, for instillation into the eye.
saturated solution one in which the solvent has taken up all of the dissolved substance that it can hold in solution.
sclerosing solution one containing an irritant substance (sclerosing agent) that will cause obliteration of a space, as in sclerotherapy.
standard solution one that contains in each liter a definitely stated amount of reagent; usually expressed in terms of normality (equivalent weights of solute per liter of solution) or molarity (moles of solute per liter of solution).
supersaturated solution an unstable solution containing more of the solute than it can permanently hold.
volumetric solution one that contains a specific quantity of solvent per stated unit of volume.

a·que·ous so·lu·tion

a solution containing water as the solvent; examples include lime water, rose water, saline solution, and many solutions intended for intravenous administration.

a·que·ous so·lu·tion

(ākwē-ŭs sŏ-lūshŭn)
Liquid containing water as solvent (e.g., lime water, rose water, saline solution), and many solutions intended for intravenous administration.

a·que·ous so·lu·tion

(ākwē-ŭs sŏ-lūshŭn)
Solution containing water as the solvent.
References in periodicals archive ?
Measurement of changes in the current caused by polymer concentration, solution viscosity, solution conductivity, and voltage for both nonaqueous and aqueous polymer solutions.
The EOF in all these nonaqueous electrolyte systems was directed from the anode to the cathode, which was at the detector end.
In this initial proof-of-concept study, they decided to use a nonaqueous electrolyte because it would limit the available reaction pathways and therefore make it easier to characterize the reaction and determine its viability.
An HPLC system (Model L-7100, Tokyo, Japan) coupled with a D-2500 chromatopac data station (Shimadzu, Kyoto, Japan) and ultraviolet (UV) detector with the detection wavelength set at 294 nm was used for resolution optimization under nonaqueous elution.
Despite the possibility to work in water, the final system exhibits and maintains a significant hydrophobicity due to the chemical composition of graphene sheets, permitting nonaqueous applications.
Maslia, "Source Characterization and Simulation of the Migration of Light Nonaqueous Phase Liquids (LNAPLs) in the Vicinity of the Hadnot Point Industrial Area," in Analyses and Historical Reconstruction of Groundwater Flow, Contaminant Fate and Transport, and Distribution of Drinking Water Within the Service Areas of the Hadnot Point and Holcomb Boulevard Water Treatment Plants and Vicinities, U.S.
Biopolymer micro- and nanoparticles have been proposed as an alternative to encapsulate progesterone by different techniques, such as glutaraldehyde crosslinking of chitosan or casein dispersed in a nonaqueous phase [5, 6] inclusion complex with [beta]-cyclodextrin or 2-hydroxypropyl-[beta]-cyclodextrin [7], miniemulsification/solvent evaporation method [8, 9], solvent precipitation [10,11], supercritical C[O.sub.2] antisolvent expansion of emulsions [12], and water in oil in water double emulsion [13].
TMT has been successfully applied in product quality, process control, and analysis of acidic substances and ions in aqueous and nonaqueous phase systems of different areas, such as petroleum, chemical engineering, electric power, pharmacy, and hygiene [6-11].
Until now, the discussed plant species have been analyzed by methods such as nonaqueous capillary electrophoresiselectrospray ion trap mass spectrometry [18], chromatography on a silica-gel column, TLC [19], and HPLC [18].
Ord, "Theoretical analyses of nonaqueous phase liquid dissolution-induced instability in two-dimensional fluid-saturated porous media," International Journal for Numerical and Analytical Methods in Geomechanics, vol.
M., Beunis, F., and Neyts, K., "Generation current of charged micelles in nonaqueous liquids: Measurements and simulations", J.
The inhibition of TSase by indole is a major problem, so nonaqueous organic solvents or nonionic detergents are used as indole reservoirs.