scholarly journals Adsorption of lithium and calcium using cationic resin for separation application

2021 ◽  
Author(s):  
Dwi Amalia ◽  
Indra Perdana ◽  
Chandra W. Purnomo
Keyword(s):  
Cationic Resin

DISTRIBUTION OF HEXOSAMINE IN ELEGTROPHORETIC FRACTIONS OF AVIAN, BOVINE, PORCINE, AND HUMAN SERA

1967 ◽  
Vol 45 (4) ◽  
pp. 541-550 ◽  
Author(s):  
A. P. Gaunce ◽  
P. A. Anastassiadis
Keyword(s):  
Human Blood ◽  
Filter Paper ◽  
Cationic Resin ◽  
Human Sera ◽  
Hydrolysis Of ◽  
Direct Hydrolysis

The distribution of hexosamine among the proteins of avian, bovine, porcine, and human blood sera was studied by electrophoresis on filter paper. Hexosamine was determined after direct hydrolysis of stained sections of the paper, followed by chromatography of hydrolysates on cationic resin. Some substantial and statistically significant differences in hexosamine and protein contents of the zones were found among species.

scholarly journals Pharmacokinetic aspects of Tert-Butylaminoethyl disulfide, an experimental drug against schistosomiasis in mice

1989 ◽  
Vol 84 (1) ◽  
pp. 95-102 ◽  
Author(s):  
M. M. Guerra Andrade ◽  
A. C. T. Freire ◽  
D. L. Nelson
Keyword(s):  
Elimination Rate ◽  
Compartment Model ◽  
Pharmacokinetic Parameters ◽  
Model Combining ◽  
Experimental Drug ◽  
Drug Plasma ◽  
Cationic Resin ◽  
Dose Dependent ◽  
Pass Metabolism ◽  
Pharmacokinetic Behavior

A preliminary study of the pharmacokinetic parameters of t-Butylaminoethyl disulfide was performed after administration of two different single doses (35 and 300 mg/kg) of either the cold or labelled drug. Plasma or blood samples were treated with dithiothreitol, perchloric acid, and, after filtration, submitted to further purification with anionic resein. In the final step, the drug was retained on a cationic resin column, eluted with NaCl 1M and detected according to the method of Ellman (1958). Alternatively, radioactive drug was detected by liquid scintillation counting. The results corresponding to the smaller dose of total drug suggested a pharmacokinetic behavior related to a one open compartment model with the following parameters: area under the intravenous curve (AUC i.v.):671 ± 14; AUC oral: 150 ± 40 µg.min. ml [raised to the power of -1]; elimination rate constant: 0.071 min [raised to the power of -1]; biological half life: 9.8 min; distribution volume: 0.74 ml/g. For the higher dose, the results seemed to obey a more complex undertermined model. Combining the results, the occurence of a dose-dependent pharmacokinetic behavior is suggested, the drug being rapidly absorbed and rapidly eliminated; the elimination process being related mainly to metabolization. The drug seems to be more toxic when administered I.V. because by this route it escapes first pass metabolism, while being quickly distributed to tissues. The maximum tolerated blood level seems to be around 16 µg/ml.

Effects of Arginine on Multimodal Chromatography: Experiments and Simulations

2018 ◽  
Vol 20 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Atsushi Hirano ◽  
Kentaro Shiraki ◽  
Tomoshi Kameda
Keyword(s):  
Molecular Dynamics ◽  
Mixed Mode ◽  
Binding Modes ◽  
Aromatic Residues ◽  
Multimodal Chromatography ◽  
Cationic Resin ◽  
Multiple Binding ◽  
Guanidinium Group ◽  
Dynamics Simulations ◽  
Protein Denaturant

Multimodal or mixed-mode chromatography can be used to separate various proteins, including antibodies. The separation quality and efficiency have been improved by the addition of solutes, especially arginine. This review summarizes the mechanism underlying the effects of arginine on protein elution in multimodal chromatography with neutral, anionic or cationic resin ligands; the mechanism has been investigated using experiments and molecular dynamics simulations. Arginine is effective in facilitating protein elution compared to salts and protein denaturants such as guanidine and urea. The unique elution effect of arginine can be explained by the interplay among arginine, proteins and the resin ligands. Arginine exhibits multiple binding modes for the ligands and further affinity for protein aromatic residues through its guanidinium group. These properties make arginine versatile for protein elution in multimodal chromatography. Taking into account that arginine is an aggregation suppressor for proteins but not a protein denaturant, arginine is a promising protein-eluting reagent for multimodal chromatography.

Rapid, versatile and sensitive method for the quantification of radium in environmental samples through cationic extraction and inductively coupled plasma mass spectrometry

2018 ◽  
Vol 33 (6) ◽  
pp. 1031-1040 ◽  
Author(s):  
Claire Dalencourt ◽  
Annie Michaud ◽  
Azza Habibi ◽  
Alexa Leblanc ◽  
Dominic Larivière
Keyword(s):  
Mass Spectrometry ◽  
Detection Limit ◽  
Environmental Samples ◽  
Inductively Coupled Plasma ◽  
Selective Method ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Cationic Resin ◽  
Plasma Mass Spectrometry ◽  
Sensitive Method

Rapid and selective method for radium quantification with interference removal by cationic resin and ICP-MS/MS, leading to a detection limit of 10 fg L−1 for 226Ra and 228Ra.

Adsorption and Desorption of Picloram, Trifluralin, and Paraquat by Ionic and Nonionic Exchange Resins

Weed Science ◽  
1972 ◽  
Vol 20 (3) ◽  
pp. 250-255 ◽  
Author(s):  
H. G. McCall ◽  
R. W. Bovey ◽  
M. G. McCully ◽  
M. G. Merkle
Keyword(s):  
Anionic Form ◽  
Adsorption And Desorption ◽  
Hydrogen Form ◽  
Cationic Resin ◽  
Anionic Resin ◽  
Exchange Resins

We investigated the forces involved in the adsorption and desorption of 4-amino-3,5-6-trichloropicolinic acid (picloram), 1,1-dimethyl-4,4′-bipyridinium ion (paraquat), and α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) using cationic, anionic, and nonionic exchange resins. The anionic resin (Cl-form) adsorbed 375, 0.08, and 0.67 mg of picloram, paraquat, and trifluralin, respectively, per gram of oven-dry resin. The nonionic resin adsorbed 4.0, 0.34, and 10.0 mg of picloram, paraquat, and trifluralin, respectively, per gram of oven-dry resin, while the cationic resin (H-form) adsorbed 2.3, 226, and 0.17 mg of picloram, paraquat, and trifluralin, respectively. Other cationic resins (Na-form and Ca-form) performed similarly to the hydrogen form. Desorption studies indicated that picloram was adsorbed mainly in the anionic form by coulombic forces (electrostatic) and to a lesser degree by weak physical bonding (van der Waal's forces). Paraquat was adsorbed as a cation through coulombic forces. Trifluralin was mainly absorbed by physical bonds at sites on the resins where there were no coulombic forces.

scholarly journals New insights in the use of a strong cationic resin in dye adsorption

2020 ◽  
Vol 81 (4) ◽  
pp. 773-780
Author(s):  
Paola Santander ◽  
Estefanía Oyarce ◽  
Julio Sánchez
Keyword(s):  
Dye Adsorption ◽  
Adsorption Rate ◽  
Maximum Adsorption Capacity ◽  
Order Model ◽  
First Order ◽  
Unreacted Core ◽  
Unreacted Core Model ◽  
Cationic Resin ◽  
Kinetics Of ◽  
Solution Volume

Abstract The adsorption of methyl orange (MO) in aqueous solution was evaluated using a cationic polymer (Amberlite IRA 402) in batch experiments under different experimental variables such as amount of resin, concentration of MO, optimum interaction time and pH. The maximum adsorption capacity of the resin was 161.3 mg g−1 at pH 7.64 at 55 °C and using a contact time of 300 min, following the kinetics of the pseudo-first-order model in the adsorption process. The infinite solution volume model shows that the adsorption rate is controlled by the film diffusion process. In contrast, the chemical reaction is the decisive step of the adsorption rate when the unreacted core model is applied. A better fit to the Langmuir model was shown for equilibrium adsorption studies. From the thermodynamic study it was observed that the sorption capacity is facilitated when the temperature increases.

632. Reactivation of milk phosphatase following heat treatment: IV. The influence of certain metallic ions

1956 ◽  
Vol 23 (2) ◽  
pp. 248-256 ◽  
Author(s):  
R. C. Wright ◽  
J. Tramer
Keyword(s):  
Heat Treatment ◽  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Metallic Ions ◽  
Cationic Resin

1. Reactivation of alkaline milk phosphatase is affected by the presence of ions, Mg2+, Zn2+ and Mn2+ being activating and Cu2+, Ni2+ and Co2+ being inhibitory.2. Cu2+ will inhibit reactivation induced by Mg2+, but has no effect upon Zn2+-induced reactivation.3. Using washed cream, either alone or in admixture with boiled whey treated with cationic resin, reactivation occurs in the presence of added Mg2+, but not when Zn2+ is added.4. Experiments with EDTA. confirm that metallic ions play a part both in alkaline phosphatase activity and in reactivation.5. It is suggested that either Mg2+ or Zn2+ or both play a part in reactivation.

Study on Shrinkage of Cured Volume for UV-Curing Coatings

2015 ◽  
Vol 731 ◽  
pp. 588-592 ◽  
Author(s):  
Qing Kai Wang ◽  
Bei Qing Huang ◽  
Xian Fu Wei ◽  
Hao Chen Shen
Keyword(s):  
Free Radical ◽  
Uv Light ◽  
Uv Curing ◽  
Volume Shrinkage ◽  
Curing Temperature ◽  
Shrinkage Rate ◽  
Uv Curable ◽  
Cationic Resin ◽  
Polyester Acrylate ◽  
Radical Type

UV-Curable Coatings, Have been Widely Used in Machinery, Chemical Engineering, Biology, Medicine, Electronics and so on, due to their Fast Curing, Low Curing Temperature, Low VOC Emissions and Low Energy Cost. however, the Volume Shrinkage during the Curing Process Have a Great Influence on the Performance of the Coating, which Ofen Lowering Coating Adhesive Strength and Accelerating the Aging Process of Coatings Film.The Paper Select Different Kinds of Monomers (EOEOEA, HDDA, TPGDA, NPGDA, TMPTA and EO3- TMPTA) and Light Cured Resin (free Radical Type: Polyester Acrylate Resin 5600, Polyurethane Acrylate UA VP 2396, the Pure Acrylic 6536-1,cationic Resin: Epoxy Cationic Resin Omnilance OC3005) to Prepare the UV Curing Coatings. Study on the Influence of Amount of Monomer and Polymer on Polyreaction Reaction by Using Orthogonal Experimental Design Method in Order to Choose the Monomer and Polymer that has the Least Volume Shrinkage Rate, then Develop Photocureable Coating Based on Free Radical Type and Cationic Resin above. the Results Indicate that the UV-Light Photocureable Coating Prepared by Single Functionality Monomer EOEOEA and the DPGDA that Doesn’t Have Neat Molecular Structure has the Less Volume Shrinkage Rate; however, in the Aspect of Prepolymer, the Preparation of UV-Light Photocureable Coating Based on Polyester Acrylate 5600 has the Least Volume Shrinkage Rate. Rely on the Experiment Results above, Prepare the New Kind of UV-Light Photocureable Coating that has Little Volume Shrinkage Rate.

scholarly journals Deacidification of macauba pulp oil (acrocomia aculeata) catalyzed by cationic resin

2015 ◽  
Vol 01 (01) ◽  
pp. 060-072
Author(s):  
Daniel Bastos de Rezende ◽  
Maria Helena Caño de Andrade ◽  
Vânya Márcia Duarte Pasa
Keyword(s):  
Cationic Resin ◽  
Acrocomia Aculeata
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