Table 2 Chemical composition of beech ash from different European and Czech locations
From: Modeling of Bohemian and Moravian glass recipes from Gothic to Baroque periods
Location | Havlíčkův Brod, CR | Moldava, CR | Orlické mountains, CRa | Germany | UKa | Switzerland |
|---|---|---|---|---|---|---|
Reference | This paper | [4] | [1] | [12] | [40] | [12] |
SiO2 | 1.9 | 9.5 | 9.3 | 23.4 | 15.6 | 29.1 |
Al2O3 | 0.6 | 2.5 | 2.7 | 10.3 | 0.8 | 7.5 |
CaO | 35.0 | 29.1 | 46.3 | 34.9 | 33.2 | 33.2 |
K2O | 14.8 | 16.4 | 23.8 | 12.4 | 20.1 | 11.1 |
Na2O | 0.1 | 0.3 | 0.2 | 0.9 | 0.4 | 0.5 |
MgO | 6.3 | 5.0 | 7.4 | 4.7 | 7.4 | 8.7 |
MnO | 2.7 | 2.0 | 1.7 | 2.8 | 6.7 | 0.2 |
Fe2O3 | 0.4 | 1.5 | 2.2 | 3.5 | 0.7 | 3.7 |
P2O5 | 2.6 | 6.3 | 3.3 | 3.5 | 13.8 | 4.7 |
TiO2 | 0.04 | – | 0.4 | 0.5 | 0.1 | 0.5 |
BaO | 0.4 | 0.4 | 0.6 | 0.2 | ||
SO3 | 1.5 | 3.0 | 1.7 | 1.6 | 1.2 | 0.6 |
Cl | 0.06 | – | 0.1 | – | – | – |
Rb2O | 0.04 | – | 0.02 | – | – | – |
SrO | 0.1 | – | 0.2 | – | – | – |
CO2 | 33.5 | 24.0 | no data | 16.4 | no data | 16.1 |
CaO/K2O | 2.4 | 1.8 | 1.9 | 2.8 | 1.7 | 2.9 |