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Effect of Some Deacidification Agents on Copper-Catalyzed Degradation of Paper

Table 1

Table 1. Effect of Deacidification Treatments on Relative Lifetime* of Copper-Doped Paper

Deacidification Treatment	Concentration (mol/l)	Application technique	Alkaline reserve (%)	Relative lifetime (days)
None	----	----	0	7.6
Magnesium bicarbonate	0.059	Immersion	0.81	14.7
Magnesium bicarbonate	0.059	Spray	0.91	7.5
Calcium hydroxide and calcium bicarbonate	0.024 and 0.080	Immersion	0.76	10.8
Zinc bicarbonate	0.011	Spray	0.90	7.9

*Relative lifetime=time to 1/8 of fold endurance value before aging.

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