Unilateral NMR: a Noninvasive Tool for Monitoring In Situ the Effectiveness of Intervention to Reduce the Capillary Raise of Water in an Ancient Deteriorated Wall Painting

Table 3

Relative amount of calcium carbonate and calcium sulphate, expressed in atomic ratio and weight percentage.

Sample	Atomic ratio CaSO4/CaCO3	CaSO4 relative amount (wt%)	CaCO3 relative amount (wt%)
S1	0.27	27.0	73.0
S2	3.12	80.9	19.1
S3	1.35	64.7	35.3
S4	0.00	0.0	100.0
S5	2.86	79.4	20.6