The atmospheric deposition of dicarboxylic acids aerosols to the formation of the damage layers

M. Z. H. Rozaini, . The atmospheric deposition of dicarboxylic acids aerosols to the formation of the damage layers. pp. 137-144. ISSN 1823-8556

Study of the morphology of calcium carbonate with the presence of Dicarboxylic Acids (DCAs) aerosol has been carried out. The experiments show that oxalic acid readily converts calcium carbonate to calcium oxalate and malonate. However the higher molecular weight of DCAs tend not to lead to calcium dicarboxylate quite so readily. Calcium succinate and calcium adipate were observed but more significantly succinic adipic and glutaric acids seem to block some of calcium carbonate sites in the lattice and inhibit crystal formation. These higher molecular weight DCAs appear to encourage the transformation among the three polymorphs of calcium carbonate: calcite aragonite and vaterite. Vaterite was especially evident in the case of adipic and glutaric acids. The presence of vaterite may be a clue to the activities of the higher DCAs. The conversion of calcium carbonate to calcium dicarboxylate by the presence of DCAs can be considered as the morphology transformation of the carbonatic stone from the crystallization-dissolution in the porous matrix of the DCAs that lead to mechanical stresses and chemical alterations that can damage monuments and historical buildings.

Full text available from: Official URL: http://jssm.umt.edu.my/files/2012/11/5.pdf

Abstract

Study of the morphology of calcium carbonate with the presence of Dicarboxylic Acids (DCAs) aerosol has been carried out. The experiments show that oxalic acid readily converts calcium carbonate to calcium oxalate and malonate. However the higher molecular weight of DCAs tend not to lead to calcium dicarboxylate quite so readily. Calcium succinate and calcium adipate were observed but more significantly succinic adipic and glutaric acids seem to block some of calcium carbonate sites in the lattice and inhibit crystal formation. These higher molecular weight DCAs appear to encourage the transformation among the three polymorphs of calcium carbonate: calcite aragonite and vaterite. Vaterite was especially evident in the case of adipic and glutaric acids. The presence of vaterite may be a clue to the activities of the higher DCAs. The conversion of calcium carbonate to calcium dicarboxylate by the presence of DCAs can be considered as the morphology transformation of the carbonatic stone from the crystallization-dissolution in the porous matrix of the DCAs that lead to mechanical stresses and chemical alterations that can damage monuments and historical buildings.

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Item Type:	Article
AGROVOC Term:	Carboxylic acids
AGROVOC Term:	Aerosols
AGROVOC Term:	Calcium carbonate
AGROVOC Term:	Atmospheric deposition
AGROVOC Term:	Atmosphere
AGROVOC Term:	Crystallization
AGROVOC Term:	morphology
AGROVOC Term:	Chemical compounds
AGROVOC Term:	Chemical reactions
AGROVOC Term:	Calcium chloride
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8715

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