volumetric analysis


volumetric analysis
1. determination of the concentration, by volume, of a substance in a solution, as by titration.
2. determination of the volume of gases or changes in their volume during combination. Cf. gravimetric analysis.
[1860-65]

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      any method of quantitative chemical analysis in which the amount of a substance is determined by measuring the volume that it occupies or, in broader usage, the volume of a second substance that combines with the first in known proportions, more correctly called titrimetric analysis (see titration).

      The first method is exemplified in a procedure devised by a French chemist, Jean-Baptiste-André Dumas (Dumas, Jean-Baptiste-André), for determining the proportion of nitrogen combined with other elements in organic compounds. A weighed sample of the compound is burned in a furnace under conditions that ensure the conversion of all the nitrogen to elemental nitrogen gas, N2. The nitrogen is carried from the furnace in a stream of carbon dioxide that is passed into a strong alkali solution, which absorbs the carbon dioxide and allows the nitrogen to accumulate in a graduated tube. The mass of the nitrogen can be calculated from the volume it occupies under known conditions of temperature and pressure, and therefore the proportion of nitrogen in the sample can be determined.

      A volumetric method is also applied in the analysis of nitrates, which can be converted into nitric oxide, NO, a gas. Production or consumption of carbon dioxide during biological processes often is measured volumetrically. The composition of fuel gases and combustion products can be determined by measuring the changes in volume that occur when the sample is treated successively with reagents that specifically absorb such components as carbon dioxide, carbon monoxide, oxygen, and others.

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Universalium. 2010.

Look at other dictionaries:

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  • volumetric analysis — n 1) quantitative analysis by the use of definite volumes of standard solutions of reagents 2) analysis of gases by volume * * * quantitative analysis of solutions of known volume but unknown strength: reagents of known concentration are added by …   Medical dictionary

  • Volumetric analysis — Analysis A*nal y*sis, n.; pl. {Analyses}. [Gr. ?, fr. ? to unloose, to dissolve, to resolve into its elements; ? up + ? to loose. See {Loose}.] 1. A resolution of anything, whether an object of the senses or of the intellect, into its constituent …   The Collaborative International Dictionary of English

  • volumetric analysis — n. the quantitative analysis of an unknown chemical solution by determining the amount of reagent of known concentration necessary to effect a reaction in a known volume of the solution …   English World dictionary

  • volumetric analysis — noun 1. determination of the volume of gases (or changes in their volume) during combination • Hypernyms: ↑quantitative analysis, ↑quantitative chemical analysis 2. quantitative analysis by the use of definite volumes of standard solutions or… …   Useful english dictionary

  • volumetric analysis — titrimetrija statusas T sritis Standartizacija ir metrologija apibrėžtis Analizė, pagrįsta titravimui suvartoto reagento kiekio matavimu. atitikmenys: angl. titration analysis; titrimetry; titrimetric analysis; volumetric analysis vok.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • volumetric analysis — titrimetrinė analizė statusas T sritis chemija apibrėžtis Analizės metodai, pagrįsti titranto tūrio ar masės, arba titrantui pagaminti reikalingo elektros kiekio matavimu. atitikmenys: angl. titrimetry; titrimetric analysis; volumetric analysis… …   Chemijos terminų aiškinamasis žodynas

  • volumetric analysis — voliumometrija statusas T sritis Standartizacija ir metrologija apibrėžtis Tūrio matavimu pagrįstų analizės metodų visuma. atitikmenys: angl. volumetry; volumetric analysis vok. Volumetrie, f rus. волюмометрия, f; объемный анализ, m pranc.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • volumetric analysis — /vɒljəˌmɛtrɪk əˈnæləsəs/ (say volyuh.metrik uh naluhsuhs) noun 1. chemical analysis by volume, especially by titration. 2. determination of the volume of gases or changes in their volume during combination …   Australian English dictionary

  • volumetric analysis — noun Any of various analytical methods and techniques in which the amount of a substance in a sample is determined by measuring the volume of a liquid or gas; especially any method using titration …   Wiktionary


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