My watch list  

Ash (analytical chemistry)

In analytical chemistry, Ash is the name given to all compounds that are not considered organic or water. These are the compounds that remain (as "ashes") after a sample is burned, and consist mostly of metal oxides.

Ash is one of the components in the proximate analysis of biological materials, consisting mainly of salty, non-organic constituents. It includes metal salts which are important for processes requiring ions such as Na+ (Sodium), K+ (Potassium), Ca+ (Calcium). It also includes trace minerals which are required for unique molecules, such as chlorophyll and hemoglobin.

For instance, the analysis of honey shows:

Typical Honey Analysis
Source: Sugar Alliance

In this example the Ash would include all the minerals in honey.

Also see:

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Ash_(analytical_chemistry)". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE