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  2. Acid–base extraction - Wikipedia

    en.wikipedia.org/wiki/Acid–base_extraction

    Typically, this is the aqueous layer, as addition of acid or base has caused the analyte to become charged and highly soluble in the aqueous layer. [9] The identity of the aqueous layer depends critically on the organic solvent's density. Organic solvents with a density greater than 1.00 g/mL (e.g. dichloromethane) cause the aqueous layer to ...

  3. Aqueous solution - Wikipedia

    en.wikipedia.org/wiki/Aqueous_solution

    A solution made in water (or) in other words,An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula .

  4. Biological membrane - Wikipedia

    en.wikipedia.org/wiki/Biological_membrane

    Cross-sectional view of the structures that can be formed by phospholipids in an aqueous solution. A biological membrane, biomembrane or cell membrane is a selectively permeable membrane that separates the interior of a cell from the external environment or creates intracellular compartments by serving as a boundary between one part of the cell and another.

  5. Multiphasic liquid - Wikipedia

    en.wikipedia.org/wiki/Multiphasic_liquid

    A multiphasic liquid is a mixture consisting of more than two immiscible liquid phases. Biphasic mixtures consisting of two immiscible phases are very common and usually consist of an organic solvent and an aqueous phase ("oil and water"). Multiphasic liquids can be used for selective liquidliquid extractions or for decorative purposes, e.g ...

  6. Thin layer extraction - Wikipedia

    en.wikipedia.org/wiki/Thin_Layer_Extraction

    With a typical liquid mass diffusivity in the order of 10 −9 m 2 /s, [2] the characteristic time for diffusion through a 20 micron thick liquid layer is 0.4 s. Therefore, the thinness of both phases (organic and aqueous) causes a relatively "immediate" mass transfer of guest species from one phase to the other, which means that this process has a low mass transfer resistance.

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  8. Adsorption - Wikipedia

    en.wikipedia.org/wiki/Adsorption

    Adsorption is the adhesion [1] of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. [2] This process creates a film of the adsorbate on the surface of the adsorbent. This process differs from absorption, in which a fluid (the absorbate) is dissolved by or permeates a liquid or solid (the absorbent). [3]

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    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.