Ash (analytical chemistry) Totally Explained

Everything about Ash Analytical Chemistry totally explained

In analytical chemistry, ash is the name given to all non-aqueous residue that remains 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), Ca²⁺ (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

Fructose: 38%
Glucose: 31%
Sucrose: 1%
Water: 17%
Other sugars: 9% (maltose, melezitose)
Ash: 0.17% ť Source: Sugar Alliance

In this example the ash would include all the minerals in honey. Also see:

oxides, for example Al₂O₃, CaO, Fe₂O₃, MgO, MnO, P₂O₅, K₂O, SiO₂

carbonates: Na₂CO₃ (aka soda ash), K₂CO₃ (aka potash),

bicarbonates, for example NaHCO₃ (aka baking soda),

Sulfates: sulfate ash according to Ph. Eur.Further Information

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