soluble bicarbonates

См. также в других словарях:

• temporary hardness — hardness of water removed by boiling; it is due to soluble bicarbonates, which lose CO2 on boiling and precipitate as normal carbonates …   Medical dictionary

• travertine —    1. Hard calcareous mineral deposited by flowing water, that is the same as the calcareous variety of sinter and comparable to the softer tufa. The term is normally used only for deposits formed outside caves, where plants and algae cause the… …   Lexicon of Cave and Karst Terminology

• temporary hardness — noun : the portion of the total hardness of water that is removable by boiling whereby the soluble bicarbonates of calcium and magnesium are converted into the corresponding insoluble carbonates and are precipitated distinguished from permanent… …   Useful english dictionary

• EAU - Approvisionnement et traitement — L’approvisionnement en eau d’un individu ou d’une collectivité implique la découverte d’un gîte (ressource), la mobilisation de l’eau (captage), son transport (adduction), sa distribution (réseau public, plomberie domestique), enfin sa… …   Encyclopédie Universelle

• Wooden reed care — and Bacteria Introduction Due to their natural composition, wooden musical reeds may hold bacteria or mold, which can affect one’s health and the quality of sound produced. Some of the basic instruments that use wooden reeds include the clarinet …   Wikipedia

• digestive system, human — Introduction  the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… …   Universalium

• excretion — excretion1 /ik skree sheuhn/, n. 1. the act of excreting. 2. the substance excreted, as urine or sweat, or certain plant products. [1595 1605; < LL excretion (s. of excretio) that which is sifted out. See EXCRETE, ION] excretion2 /ik skree… …   Universalium

• Carbon dioxide — Carbon dioxide …   Wikipedia

• CALCAIRES — Une roche est dite calcaire si elle renferme au moins 50 p. 100 de carbonate de chaux (CaCO3), généralement représenté par de la calcite , plus rarement par de l’aragonite ; les minéraux les plus fréquemment associés au carbonate de chaux dans… …   Encyclopédie Universelle

• GÉOCHIMIE — Le terme «géochimie» a été créé, en 1838, par le Suisse Christian Friedrich Schönbein. Selon la définition du Glossary of Geology and Related Sciences (1960), la géochimie est «la science qui traite de l’abondance absolue et relative des éléments …   Encyclopédie Universelle

• Alkali soils — Alkali, or alkaline, soils are clay soils with a relatively high exchangeable sodium percentage, a relative high pH (> 9), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 m. depth (in… …   Wikipedia