A comprehensive spectroscopic analysis consisting of Raman, infrared (IR) and near-infrared (NIR) spectroscopy was undertaken on two forms of calcium acetate with differing degrees of hydration. Monohydrate (Ca(CH(3)COO)(2).H(2)O) and half-hydrate (Ca(CH(3)COO)(2).0.5H(2)O) species were analysed. Assignments of vibrational bands due to the acetate anion have been made in all three forms of spectroscopy. Thermal analysis of the mineral was undertaken to follow its decomposition under a nitrogen atmosphere. Three major mass loss steps at approximately 120, 400 and 600 degrees C were revealed. These mass losses correspond very well to firstly, the loss of co-ordinated water molecules, and then the loss of water from the acetate anion, followed by finally the loss of carbon dioxide from the carbonate mineral to form a stable calcium oxide.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.saa.2006.07.045 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Limitations of soil-applied non-microbial and microbial biostimulants in enhancing soil P turnover and recycled P fertilizer utilization - a study with and without plants.
Front Plant Sci
November 2024
Institute of Crop Science, Department of Fertilization and Soil Matter Dynamics, University of Hohenheim, Stuttgart, Germany.
Introduction: Phosphorus recovery from waste streams is a global concern due to open nutrient cycles. However, the reliability and efficiency of recycled P fertilizers are often low. Biostimulants (BS), as a potential enhancer of P availability in soil, could help to overcome current barriers using recycled P fertilizers.
View Article and Find Full Text PDFStudy on the Factors Influencing the Adsorption Mechanism of CSH Gel for Chloride Ions.
Materials (Basel)
November 2024
College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
Article Synopsis
- * In this study, CSH gel was created by combining calcium acetate and sodium silicate, specifically to capture chloride ions.
- * The findings showed that a calcium-to-silicon ratio of 1.2 resulted in CSH gel effectively adsorbing chloride ions, with capacities of 17.45 mg/g for CaCl and 8.06 mg/g for NaCl, mainly through physical adsorption and a displacement reaction with hydroxide ions.
Formulation and Evaluation of Characteristics, Remineralization Potential, and Antimicrobial Properties of Toothpaste Containing Nanohydroxyapatite and Nanosilver Particles: An Study.
Int J Clin Pediatr Dent
June 2024
Department of Public Health Dentistry, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India.
Article Synopsis
- The study evaluates the antimicrobial and remineralizing properties of a new toothpaste that contains nanosilver and nanohydroxyapatite (NH-NS TP).
- It involved preparing the toothpaste, testing for toxicity against human gingival cells, and measuring its effectiveness against certain bacteria using the disk diffusion method.
- Results indicated that the NH-NS TP had strong antimicrobial effects, no toxicity at certain levels, and significantly improved microhardness of tooth enamel, suggesting good remineralization potential.
The study proposed improving the arsenic encapsulation efficiency (EE) in liposomes and make it pH responsive. Liposomes were prepared using the ethanol injection method (EIM), thin film dispersion method (TFM) and CAGM with sodium arsenite (NaAsO). The orthogonal experimental was used to optimize the preparation conditions of the CAGM.
View Article and Find Full Text PDFCalcium Acetate Drug Produced from Invasive Gastropod Shells: Green Process Control Assisted by Raman Technology.
ACS Omega
September 2024
Ioan Ursu Institute of the Faculty of Physics, Babeş-Bolyai University, 1 Kogălniceanu, 400084 Cluj-Napoca, Romania.
The highly demanded calcium acetate (Ca(CHCOO)) for biomedicine and various industries constantly requires green and low-cost methods of synthesis. In the present work, a sustainable approach to produce Ca(CHCOO) is reported as a proof of concept, processing for the first time as a starting material the worldwide highly abundant shells, which is a neglected biogenic waste with high economical potential due to the rich mineral and organic pigmentary content. A green synthesis involving an eco-friendly acetic acid has been optimized at room temperature, without any additional energy consumption, and the resulting saturated Ca(CHCOO) solution was further slowly evaporated in three stages to obtain white Ca(CHCOO) crystalline powder, without impurity traces.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!