Heritage Science

Table 1 Results from the IC analysis for untreated and ammonium oxalate treated samples

From: Interactions on site between powdering porous limestone, natural salt mixtures and applied ammonium oxalate

	Untreated Meq/g		Treated Meq/g		% change
Cl⁻	0.4638 ± 0.0040		0.4274 ± 0.0155		− 7.85
NO₃⁻	0.1624 ± 0.0002		0.1906 ± 0.0035		17.36
SO₄⁻	0.0306 ± 0.0015		0.0256 ± 0.0004		− 16.34
Na⁺	0.2652 ± 0.0043		0.2304 ± 0.0065		− 13.12
Ca²⁺	0.635 ± 0.0074		0.565 ± 0.0125		− 11.02
Mg²⁺	0.0905 ± 0.0041		0.0905 ± 0.0082		0.00
K⁺	0.0172 ± 0.0011		0.0215 ± 0.0005		25.00
NH₄⁺	0.0044 ± 0.0010		0.0394 ± 0.0011		795.45

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