Preparation and quality assessment of high-purity ginseng total saponins by ion exchange resin combined with macroporous adsorption resin separation

2014 ◽  
Vol 12 (5) ◽  
pp. 382-392 ◽  
Author(s):  
Yu-Nan ZHAO ◽  
Zhong-Li WANG ◽  
Jian-Guo DAI ◽  
Lin CHEN ◽  
Yu-Fang HUANG
Keyword(s):  
Ion Exchange ◽  
Quality Assessment ◽  
High Purity ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Macroporous Adsorption Resin ◽  
Adsorption Resin ◽  
Resin Separation

Separation of Manganese, Cobalt, Copper, Zinc, and Magnesium By Using an Anion Exchange Resin

1967 ◽  
Vol 50 (4) ◽  
pp. 783-786
Author(s):  
Eugene A Breatjlt
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Ion Exchange Resin ◽  
Acid Solutions ◽  
Resin Column ◽  
Hydrochloric Acid Solutions ◽  
Copper Zinc ◽  
Resin Separation

Abstract The metals Mn, Mg, Co, Cu, and Zn were separated by using an anion exchange resin column and progressively less concentrated IIC1 solution as eluting agent. The position of Mg on an anion exchange resin, not previously reported in the literature, was determined. It has been shown that by using two different ion exchange resin columns, simple hydrochloric acid solutions as eluants, and polarographic or flame photometric determinations, 12 metals can be separately estimated in an aqueous solution containing about 100 /μg of each. It is recommended that the study of ion exchange resin separation of metals found in plants be continued.

T4 RADIOIMMUNOASSAY WITH ION-EXCHANGE RESIN SEPARATION

The Lancet ◽  
1977 ◽  
Vol 309 (8022) ◽  
pp. 1150-1151 ◽  
Author(s):  
J.D. Michael ◽  
K. Modha
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Resin Separation

Ion Exchange Resin Separation of Metals Occurring in Plant Material

1966 ◽  
Vol 49 (2) ◽  
pp. 298-305
Author(s):  
Eugene A Breault
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Ion Exchange Resin ◽  
Acid Solutions ◽  
Uniform Particles ◽  
Hydrochloric Acid Solutions ◽  
Ion Exchange Separation ◽  
Resin Separation ◽  
Unified Method

Abstract The study of the separation of metallic chlorides on Amberlite CG-120 (200–400 mesh) cation exchange resin was continvied. Na, K, Mo, Al, Ca, and Fe have been separated by hydrochloric acid solutions and determined by polarography or flame photometry. Semimicro quantities of these metals can be separated from each other with a minimum of eluting agent, small resin beds, and simple equipment. Mechanical grading of the air-dried resin was used to obtain more uniform particles. The ion exchange separation scheme offers advantages over present official procedures, and it should provide a unified method for the analysis of metals in mixtures. Further study is recommended.

scholarly journals Synthesis of coumarin derivative using polymer supported reagents

2018 ◽  
Vol 9 (2) ◽  
pp. 89-91 ◽  
Author(s):  
Chiheb Mhiri ◽  
Riadh Ternane ◽  
Naceur Hamdi ◽  
Lassaad Baklouti
Keyword(s):  
Mass Spectrometry ◽  
Ion Exchange ◽  
Organic Synthesis ◽  
High Purity ◽  
Exchange Resin ◽  
Coumarin Derivative ◽  
Ion Exchange Resin ◽  
Isolation And Purification ◽  
Polymer Supported ◽  
Unsaturated Nitrile

Recently, there has been a surge in use of polymer-supported reagents and catalysts become common tools for organic synthesis in what is known as polymer-assisted synthesis since they can simplify product isolation and purification. In this context, coumarin derivative 3 was prepared in good yield and high purity, starting from 3-methoxy salicylaldehyde, using reagents supported on a macroporous ion exchange resin. For this purpose, iminocoumarin and unsaturated nitrile were used as starting materials. The synthesized compounds were characterized by IR, NMR and mass spectrometry.

Effect of Cycles and Ion-Exchange on the Purification of Lithium Carbonate

2012 ◽  
Vol 443-444 ◽  
pp. 594-600
Author(s):  
Jian Wu ◽  
Yao Chun Yao ◽  
Yong Nian Dai ◽  
Bin Yang
Keyword(s):  
Ion Exchange ◽  
High Purity ◽  
Mother Liquor ◽  
Exchange Resin ◽  
Exchange Process ◽  
Lithium Carbonate ◽  
Ion Exchange Resin ◽  
Exchange Method ◽  
Ion Exchange Process ◽  
Industrial Grade

In this study, high-purity Li2CO3 was prepared by carbonation-decomposition and ion-exchange methods using the industrial-grade lithium carbonate, and the effect of cycles and ion-exchange of the mother liquor on purification was investigated. Results showed that the process of cycles can improve the purity and productivity of Li2CO3. The impurities (such as K, Na, Ca and Mg) could be removed in the process. The purity of product decreased and the impurity contents increased after 4 cycles. At the same time, the ion-exchange process by D412 resin was used to deeply remove the residual Ca and Mg after the simple carbonation-decomposition and cycle process. The comparison of different flowing speed of solution through the ion-exchange resin indicated that the low flowing speed was beneficial for the deep removal of the Ca and Mg. considering the problem of efficiency, the flowing speed of 10-20 ml/min was appropriate. The high purity and productivity of Li2CO3 indicated that the carbonation-decomposition method combining with the mother liquor cycles and ion-exchange method has a good perspective in the field of lithium carbonate purification.

Ultraviolet Spectrophotometric Method for Ronnel in Feeds

1966 ◽  
Vol 49 (2) ◽  
pp. 318-325
Author(s):  
Albert J Gehrt
Keyword(s):  
Ion Exchange ◽  
Annual Meeting ◽  
Spectrophotometric Method ◽  
Decomposition Product ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
New Method ◽  
Resin Separation ◽  
Feed Samples

Abstract The ultraviolet spectrophotometric method for ronnel in feeds, adopted as official, first action at the 78th Annual Meeting (1964), was studied at levels of 0.015–5.5% ronnel by 9 collaborators on 4 feed samples. The study was to confirm the 1964 work and to test the accuracy and reproducibility of a Dowex 2-X8 ion exchange resin separation of ronnel from its decomposition product, 2,4,5-trichlorophenol. When an aliquot of the extract was passed through the Dowex column, 2,4,5-TCP remained, while ronnel passed through. Collaborators obtained satisfactory results; therefore, the Associate Referee recommends adoption of the new method and repeal of the earlier method.

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