Table 4 Anions and cations obtained by IC and expressed as percentages by weight
From: Mapping of stones and their deterioration forms: the Clock Tower, Venice (Italy)
Sample | 1E | 1N | 1W | 2N | 2S | 4N | 5E | 5S | 5W | 7E | 8W |
|---|---|---|---|---|---|---|---|---|---|---|---|
Anions | |||||||||||
Fluoride | – | – | 0.01 | – | 0,01 | – | – | 0,01 | – | – | – |
Chloride | 0.02 | 0.03 | 0.03 | 0.03 | 0,13 | 0.03 | 0.03 | 0,07 | 0,05 | 0,04 | 0.03 |
Nitrate | – | – | – | – | 0,05 | – | – | 0,04 | 0,06 | 0,03 | – |
Sulphate | 0.03 | 0.03 | - | 0.03 | 1,09 | 0.03 | – | 0,68 | 0,13 | 0,05 | 0.04 |
Cations | |||||||||||
Sodium | 0.04 | 0.03 | 0.02 | 0.04 | 0.26 | 0.03 | 0.04 | 0.11 | 0.02 | 0.04 | 0.04 |
Ammonium | 0.08 | 0.10 | 0.05 | 0.09 | - | 0.06 | 0.07 | 0.11 | 0.10 | 0.09 | 0.09 |
Potassium | 0.08 | – | 0.08 | - | - | 0.10 | 0.09 | 0.14 | – | – | – |
Magnesium | 0.13 | 0.05 | 0.38 | 0.07 | 0.02 | 0.15 | 0.59 | 0.08 | 0.28 | 0.13 | 0.66 |
Calcium | 1.63 | 1.66 | 1.44 | 1.66 | 5,06 | 1.82 | 1.58 | 3.03 | 2.36 | 1.75 | 2.19 |