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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.

Additional recommended knowledge

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.
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