vapor concentration
1vapor concentration — The mass of water vapor present per unit volume of space (i.e., the density of water vapor) usually expressed in grams per cubic meters, or gm/m3. The actual amount of water, by weight of water vapor, in a given volume of space. Also called… …
2Vapor-liquid equilibrium — Vapor liquid equilibrium, abbreviated as VLE by some, is a condition where a liquid and its vapor (gas phase) are in equilibrium with each other, a condition or state where the rate of evaporation (liquid changing to vapor) equals the rate of… …
3Vapor pressure osmometry — is a technique to measure the number average molecular weight of a polymer. It is based upon Raoult s law that governs change in vapor pressure of a solution based on the mole fraction of the solute.The vapor pressure osmometer is composed of two …
4Vapor — A vapor or vapour (see spelling differences) is a substance in the gas phase at a temperature lower than its critical temperature. [R.H.Petrucci, W.S.Harwood and F.G.Herring, General Chemistry , 8th edition (Prentice Hall 2002), p.486] This means …
5Dynamic vapor sorption — (DVS) is a gravimetric technique that measures how quickly and how much of a solvent is absorbed by a sample: such as a dry powder absorbing water. It does this by varying the vapor concentration surrounding the sample and measuring the change in …
6headspace concentration — A technique for concentration all or most of the flammable or combustible liquid vapors in a sample onto a tube of charcoal, a wire coated with charcoal, a charcoal coated polymer, or some other adsorbing material which will later be desorbed… …
7vapour concentration — /veɪpə kɒnsənˈtreɪʃən/ (say vaypuh konsuhn trayshuhn) noun See humidity (def. 2c). Also, vapor concentration …
8Chemical vapor deposition — DC plasma (violet) enhances the growth of carbon nanotubes in this laboratory scale PECVD apparatus. Chemical vapor deposition (CVD) is a chemical process used to produce high purity, high performance solid materials. The process is often used in …
9Soil vapor extraction — (SVE) is an in situ process for soil remediation where contamination is removed from soil by carrying it out through a medium such as air or steam. The extracted soil vapors are separated into liquids and vapors, and each stream is treated as… …
10Limiting oxygen concentration — Flammability diagram, green dotted line shows safe purging of an air filled vessel, first with nitrogen, then with methane, to avoid the flammable region. The limiting oxygen concentration is shown in the lower right of the diagram. Limiting… …
