scholarly journals Influence of Silicate and Calcium Ions to Transport of Phosphate Ion through Polymeric Inclusion Membrane (PIM)

2017 ◽  
Vol 2 (2) ◽  
pp. 119
Author(s):  
Barlah Rumhayati ◽  
Qonitah Fardiyah ◽  
Himayatul Musyarofi
Keyword(s):  
Ion Transport ◽  
Calcium Ions ◽  
Calcium Ion ◽  
Phosphate Solution ◽  
Transport Efficiency ◽  
Molybdenum Blue ◽  
Visible Spectrophotometry ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Feed Phase

<p>Measurement of phosphate ions by molybdenum blue method is influenced by the presence of interfering ions, such as silicate and calcium ions. To obtain an accurate measurement, interference ions should be separated from the phosphate ion. Separation could be carried out with extractions using PIM method. The effectiveness of separation based on PIM method depends to the transport efficiency of targeted ion from feed phase to stripping phase. The aim of this research was to determine the effect of silicate and calcium ions to phosphate ion transport through PIM. PIM was prepared by mixing PVC as polymer, 1,10-dekanadiol as a plasticizer, and Aliquat 336-Cl as extractant in the solvent THF. Extraction was performed by using a diffusion cell, The cell was consisted by two containers, <em>i.e </em> feed phase container and stripping phase container which was separated by PIM. Feed phase was a mixture of phosphate 100 mg / L and SiO<sub>3</sub><sup>2-</sup> at 5; 10; 15; 20 and 25 mg/L for studying the effect of silicate ion. Investigation of calcium ion effect was conducted by using a mixture of phosphate solution of 100 mg / L and Ca<sup>2+</sup> of 1.13x10<sup>-4</sup>; 2.26x10<sup>-4</sup> and 4.52x10<sup>-4</sup> mg/L in the feed phase. The stripping phase was the solution of NaCl 0.1 M. Both containers were stirred for 3 hours at 180 rpm. The solution in the both containers  was taken for 1 mL every 30 minutes. Phosphate ion was measured by visible spectrophotometry at 690 nm with molybdenum blue method. Silicate ion was determined by visible spectrophotometry at a wavelength of 410 nm with molybdenum blue method. Calcium ion was determined by AAS. The results showed that the higher concentration of calcium ions, the lower the phosphate ion transport efficiency. Only 34.46% of phosphate ions transported in the presence of calcium ions up to 4,52x10<sup>-4</sup> mg/L. Meanwhile, PIM was more selective to silicate ion than ion phosphate at the silicate ion concentration up to 15 mg/L. At higher concentration of silicate ions, PIM was more selective to phosphate ion.</p>

scholarly journals Apatite-Forming Ability of Flowable vs. Putty Formulations of Newly Developed Bioactive Glass-Containing Endodontic Cement

2021 ◽  
Vol 11 (19) ◽  
pp. 8969
Author(s):  
Naoki Edanami ◽  
Razi Saifullah Ibn Belal ◽  
Shoji Takenaka ◽  
Kunihiko Yoshiba ◽  
Nagako Yoshiba ◽  
...  
Keyword(s):  
Calcium Ions ◽  
Calcium Ion ◽  
Body Fluid ◽  
Apatite Formation ◽  
Ion Release ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Ability Levels ◽  
Consumption Rates ◽  
The Media

This study compared the apatite-forming ability (AFA) levels of flowable and putty formulations of Nishika Canal Sealer BG Multi (F-NBG and P-NBG, respectively) and attempted to clarify the cause of differences in the AFA levels of F-NBG and P-NBG. NBG samples were aged in simulated body fluid (SBF) or 1-, 5-, or 10-g/L bovine serum albumin-containing SBF (BSA-SBF) and analyzed in terms of their ultrastructures, elemental compositions, and Raman spectra to identify apatite formation. The phosphate ion consumption rates of NBG samples in the media were evaluated as an indicator of apatite growth. The original elemental composition, calcium ion release, and alkalizing ability levels of F-NBG and P-NBG were also evaluated. Apparent apatite formation was detected on all NBG samples except F-NBG aged in 10-g/L BSA-SBF. P-NBG consumed phosphate ions faster than F-NBG. As-prepared P-NBG showed more silicon elements on its surface than as-prepared F-NBG. P-NBG released more calcium ions than F-NBG, although their alkalizing ability levels did not differ statistically. In conclusion, the AFA of P-NBG was greater than that of F-NBG, probably because of the greater ability of P-NBG to expose silanol groups on the surface and release calcium ions.

scholarly journals MACRONUTRIENTS WATERS OF IRRIGATION ON A PROPERTY OF ORGANIC PRODUCTION IN PARANAGUÁ - PR

2014 ◽  
Vol 12 (24) ◽  
pp. 85-91
Author(s):  
Camila Salles dos REIS ◽  
Luiz Ermindo CAVALLET ◽  
José Roberto Caetano da ROCHA
Keyword(s):  
Chemical Element ◽  
Organic Production ◽  
Sampling Point ◽  
High Concentration ◽  
Molybdenum Blue ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Physical And Chemical ◽  
Chemical Testing ◽  
High Phosphate

In this work the results of spectrophotometric assays performed on samples taken from the waters of ownership of organic products, located in the municipality of Paranaguá, as well as other physical and chemical testing of these samples are presented. They were conducted to evaluate the tissue property. The spectrophotometric assays were performed to quantify the chemical element phosphorus by the molybdenum blue method and nitrogen chemical element methods by Griess and Indophenol. These chemicals have low natural availability and macronutrients are important for the growth of plants. With the results it was found that the concentrations of the element nitrogen are below the limits specified by Resolution 357/2005 of CONAMA. Have phosphate ions showed higher concentrations in the water samples were taken from two specific points of organic property. In the samples from the first sampling point was observed that the levels of phosphate present were higher than the results obtained from samples taken from the second point, indicating that high phosphate concentration is likely due to high levels of soil phosphates and not an anthropic deposit held by the farmer. Thus it is concluded that the high concentration of phosphate ion is natural.

scholarly journals THE EFFECT OF CASEIN PHOSPHOPEPTIDE-AMORPHOUS CALCIUM PHOSPHATE-PROPOLIS CHEWING GUM ON CALCIUM AND PHOSPHATE ION LEVELS IN CARIES-FREE SUBJECT’S SALIVA AND STREPTOCOCCUS MUTANS BIOFILM FORMATION

2017 ◽  
Vol 10 (17) ◽  
pp. 174
Author(s):  
Sri Angky Soekanto ◽  
Gadiacanaparimita Ghrena Duhita ◽  
Endang Winiati Bachtiar ◽  
Muhamad Sahlan
Keyword(s):  
Calcium Phosphate ◽  
Streptococcus Mutans ◽  
Calcium Ions ◽  
Amorphous Calcium Phosphate ◽  
Chewing Gum ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Casein Phosphopeptide ◽  
Mass Formation

 Objective: The aim of this study is to analyze the amount of calcium and phosphate ion released by casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), which supports the remineralization and the effectiveness of propolis wax in suppressing the mass formation of Streptococcus mutans biofilm on caries-free subjects and to observe if these two active components are effective when combined into one substance and placed inside sugar-free chewing gum.Methods: Twenty-five samples of caries-free saliva before and after the mastication simulation (five concentrations of chewing gum) in vitro were observed to check for release of calcium and phosphate ions along with a biofilm assay. The release of calcium ions was detected using AAS, the release of phosphate ions was detected using spectrophotometry ultraviolet-visible, and the biofilm assay was detected using a crystal violet 96-well plate ELISA and was evaluated with an ELISA reader.Result: Chewing gum with a concentration of 0% prop + 5% CPP-ACP showed the highest release level of calcium ions (p<0.05) and phosphate ions (p>0.05) and is significant in suppressing the mass formation of the S. mutans biofilm (p<0.05).Conclusions: Mastication simulation of CPP-ACP-Propolis chewing gum can increase calcium and phosphate ion levels in caries-free saliva and decrease S. mutans biofilm mass formation; this can support remineralization and becomes a dental caries prevention alternative.

scholarly journals Ion release and recharge from a fissure sealant containing amorphous calcium phosphate

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0241272
Author(s):  
Mahtab Memarpour ◽  
Neda Afzali Baghdadabadi ◽  
Azade Rafiee ◽  
Mehrdad Vossoughi
Keyword(s):  
Calcium Phosphate ◽  
Amorphous Calcium Phosphate ◽  
Calcium Ion ◽  
Ion Release ◽  
Three Solutions ◽  
Fissure Sealant ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Release Capacity ◽  
Casein Phosphopeptide

To assess- the release of calcium and phosphate ions from a fissure sealant containing amorphous calcium phosphate (ACP), and to determine the re-release capacity of these ions when charged with a solution containing casein phosphopeptide-amorphous calcium phosphate (CPP-ACP). Nine blocks of ACP resin-based sealant were prepared and immersed in three solutions at different pH (4.0, 5.5, 7.0), and calcium and phosphate ion release was measured with ion chromatography at 1, 3, 5, 7, 14, 21 and 28 days after immersion. Sixty days after immersion, each block was charged with CPP-ACP solution in three 7-day cycles to investigate the re-release of these ions, which was measured on days 1, 3, and 7. No difference was observed in initial calcium ion release at pH 4.0 and pH 5.5. At both values, ion release was significantly higher than at pH 7.0 (p<0.001). Initial phosphate release was significantly different among the three pH values (p<0.001). After re-charging the specimens, calcium ion re-release was greater than phosphate ion release. Initial ion release from ACP resin-based sealant was greatest at the lowest pH. Ion release decreased with time. As the number of recharge cycles increased, ion re-release also improved. Phosphate ion re-release required more recharge cycles than calcium ion re-release.

Study of Bio-Mineralization of BCP with Compensation of Calcium and Phosphate Ions

2009 ◽  
Vol 610-613 ◽  
pp. 1391-1394
Author(s):  
Hua De Zheng ◽  
Ying Jun Wang ◽  
Qiang Ma ◽  
Cheng Yun Ning ◽  
Xiao Feng Chen
Keyword(s):  
Free Energy ◽  
Calcium Phosphate ◽  
Calcium Ions ◽  
Biphasic Calcium Phosphate ◽  
Porous Ceramic ◽  
Apatite Layer ◽  
Apatite Formation ◽  
Phosphate Ions

In the present study, an Intelligent Multi-parameter Simulated Evaluation in vitro （IMSE system） was used to study the deposition properties of apatite formation on the surface of biphasic calcium phosphate porous ceramic (BCP) from static and dynamic r-SBF. Results showed that apatite formed on the surface of BCP from static and dynamic r-SBF differed between each other. In static r-SBF, ions were transferred by diffusion, which could not compensate the consuming of calcium ions, and mist apatite layer was formed on the surface of samples. But in the dynamic r-SBF, simulated fluid was adjusted precisely and flowed forcedly, the concentrations of ions were homogeneous; with the compensation of ions, calcium and phosphate were supersaturated, and the free energy of apatite formation was negative, bone-like apatite sheets were formed on the surface of samples.

scholarly journals The study of phosphate ions sorption from silicon dioxide solutions obtained by using acid decomposition of nepheline

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 42-47
Author(s):  
Yu. O. Velyaev ◽  
◽  
D. V. Maiorov ◽  
Keyword(s):  
Experimental Data ◽  
Silicon Dioxide ◽  
Equilibrium Constant ◽  
Municipal Wastewater ◽  
Adsorption Equilibrium ◽  
Sorption Process ◽  
Acid Decomposition ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Adsorption Monolayer

The process of sorption of phosphate ion by silicon dioxide obtained by acid decomposition of nepheline is studied. The experimental data were processed using the Freundlich and Langmuir sorption equations, which showed that the sorption process is fairly accurately described by both equations, while the use of the Langmuir monomolecular adsorption equation is preferable in the calculations. The capacity of the adsorption monolayer of the synthesized sample relative to the РО43–-ion and the adsorption equilibrium constant are calculated. Based on the obtained data, various options for sorption treatment of municipal wastewater from РО43--ion to normalized MPC values were evaluated.

scholarly journals THE EFFECT OF LACTIC ACID AND ARTIFICIAL SALIVA SOLUTION IMMERSION TO THE RELEASE OF CALCIUM IONS ON BIOACTIVE RESIN

2021 ◽  
Vol 6 (2) ◽  
pp. 190
Author(s):  
Dewi Puspitasari ◽  
Nurah Tajjalia ◽  
Diana Wibowo ◽  
Agung Satria Wardhana
Keyword(s):  
Lactic Acid ◽  
Acid Solution ◽  
Calcium Ions ◽  
Calcium Ion ◽  
Artificial Saliva ◽  
Distilled Water ◽  
Acid Condition ◽  
Ion Release ◽  
Lactic Acid Solution ◽  
Solution Increase

Background: Bioactive resin can release calcium ions when contact with solution media, even in acid condition. In the oral cavity, pH may change into acid condition due to the metabolic results of Streptococcus mutans. The bacteria metabolize carbohydrates into organic acids, one of which is lactic acid. Purpose: Analyze the effect of lactic acid solution and artificial saliva on the number of the release of calcium ions of bioactive resin. Methods: Forty-two specimens (diameter 15 mm x thickness 1 mm; n= 7/group fabricated with Activa™ Bioactive Restorative (Pulpdent). The specimens that meet the criteria were divided into 6 groups. The specimen was immersed for 1 and 7 days in the incubator at 37oC. The number of calcium ion release is measured using titration method. Results: Two Way Anova test and Post Hoc Bonferonni test showed there were significant differences among all group for lactic acid 1 day (4.040 ± 0.360) µg, artificial saliva 1 day (0.640 ± 0.338) µg, distilled water 1 day (1.040 ± 0.504) µg, lactic acid 7 days (5.400 ± 0.312), artificial saliva 7 days (1.640 ± 0.215) µg, distilled water 7 days (3.520± 0.356 µg). Conclusion: There was an influence of lactic acid and artificial saliva on the number of calcium ion releases of bioactive resin. Immersion of bioactive resin in the lactic acid solution increase the calcium ion releases and artificial saliva decrease the calcium ion release compared to distilled water. Keywords: artificial saliva, bioactive resin, calcium ion release, lactic acid

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