Comparative evaluation of the pH of calcium hydroxide powder in contact with carbon dioxide (CO2)
| Autor: | Lucineide de Melo Santos, Jose Carlos de Souza Lima, Paulo César Costa de Oliveira, Karlos Antonio Lisboa Ribeiro Junior, Amaro de Mendonca Cavalcante, Antônio Euzébio Goulart Santana |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Calcium hydroxide
Chemistry Mechanical Engineering ph evaluation Inorganic chemistry Condensed Matter Physics Comparative evaluation chemistry.chemical_compound Mechanics of Materials Carbon dioxide lcsh:TA401-492 General Materials Science lcsh:Materials of engineering and construction. Mechanics of materials dioxide carbon calcium hidroxide |
| Zdroj: | Materials Research v.13 n.1 2010 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Vol 13, Iss 1, Pp 1-4 (2010) Materials Research, Volume: 13, Issue: 1, Pages: 1-4, Published: MAR 2010 |
| Popis: | This work involved an evaluation of calcium hydroxide powder in the absence and presence of CO2. 0.12g of calcium hydroxide powder was used for each of 16 aliquots diluted in 100 mL of deionized water and distributed in 2 samples of 8 aliquots. The indices of pOH, [OH-] and [Ca++] were obtained by mathematical calculations after determining the pH. The results demonstrated that in the presence of CO2, calcium hydroxide showed a marked loss of [OH-] and [Ca++] in relation to the decrease in pH. However, the high alkaline pH of the calcium hydroxide powder was preserved in the absence of CO2, maintaining its reparative and antimicrobial properties. |
| Databáze: | OpenAIRE |
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