Report on Isotherm Studies for Cation Exchange Resins for Cr(III) Removal and Expanded Anion Exchange Column Studies for Cr(VI) Removal

This paper introduced the design and research of spent resin conical dryer which was based on the analysis of the thermal decomposition characteristics of resins. The drying experiment of non-radioactive cation exchange resins and anion exchange resins was also carried out in this study. The result showed that the water content of resins reduced from about 55%(wt) to 8.5%(wt) and the volume reduction ration reached 2.17 with a drying end temperature of 90°C, which preliminarily verified the feasibility of the vacuum drying process and conical dryer device for treating radioactive spent resins.

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Adsorption of ammonia gas with cation-exchange resins and sulfur dioxide gas with anion-exchange resins

Journal of Applied Polymer Science ◽

10.1002/1097-4628(20001107)78:6<1312::aid-app170>3.0.co;2-o ◽

2000 ◽

Vol 78 (6) ◽

pp. 1312-1314 ◽

Cited By ~ 4

Author(s):

Kenichi Horiuchi ◽

Jiro Shibata ◽

Daisuke Kouso

Keyword(s):

Sulfur Dioxide ◽

Cation Exchange ◽

Anion Exchange ◽

Ammonia Gas ◽

Anion Exchange Resins ◽

Cation Exchange Resins ◽

Exchange Resins

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Excretion of L-Dopa and Its Metabolites in Urine of Parkinson's Disease Patients Receiving L-Dopa Therapy

Clinical Chemistry ◽

10.1093/clinchem/17.9.867 ◽

1971 ◽

Vol 17 (9) ◽

pp. 867-871 ◽

Cited By ~ 25

Author(s):

J I Routh ◽

R E Bannow ◽

R W Fincham ◽

J L Stoll

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Cation Exchange ◽

Anion Exchange ◽

Paper Electrophoresis ◽

Colorimetric Determination ◽

Anion Exchange Column ◽

Exchange Column ◽

Cation Exchange Column

Abstract L-Dopa and its major metabolites were separated from daily 24-h urines from patients with Parkinson’s disease, who were being treated with increasing doses of the drug, up to 4 g per day. An aliquot of each sample was passed through three different ion-exchange columns. Catecholamines (dopamine, epinephrine, norepinephrine, metanephrine, and normetanephrine) were retained on a cation-exchange column, eluted with boric acid, and quantitated by fluorometric analysis. Catechol acids, present in the effluent of the cation-exchange column, were retained on an anion-exchange column. An aliquot of the eluate of the anion-exchange column was used for colorimetric determination of 3,4-dihydroxyphenylacetic acid, while the effluent from this column was used for colorimetric determination of dopa. A second aliquot of the eluate from this column was passed over a column of alumina, which retained all the acidic metabolites except homovanillic acid, which was measured fluorometrically in the effluent from the alumina column. Vanilmandelic acid was determined in another aliquot of each urine sample by use of paper electrophoresis. The excretion pattern elicited suggests a major metabolic pathway for the L-dopa administered to patients with Parkinson's disease.

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Determination of plutonium, uranium and americium/curium isotopes in environmental samples with anion exchange, UTEVA, Sr and DGA resin

Proceedings in Radiochemistry ◽

10.1524/rcpr.2011.0034 ◽

2011 ◽

Vol 1 (1) ◽

pp. 189-194 ◽

Cited By ~ 1

Author(s):

M.H. Lee ◽

J.-H. Park ◽

K. Song

Keyword(s):

Anion Exchange ◽

Environmental Samples ◽

Scintillation Counter ◽

Uranium Isotopes ◽

Dga Resin ◽

Anion Exchange Column ◽

Exchange Column ◽

Uteva Resin ◽

Pu Isotopes ◽

Exchange Resins

AbstractThis study presents a quantitative sequential radiochemical separation method for the Pu, U, Sr and Am/Cm isotopes with an anion exchange resin, UTEVA resin, Sr resin and DGA resin in environmental samples. After the radionuclides were leached from samples with 8 M HNO3, the Pu, U, Sr and Am/Cm isotopes were sequentially adsorbed on the anion exchange column, UTEVA column connected with Sr Spec column and DGA column. The Pu isotopes were purified from other nuclides through the anion exchange column, and the uranium isotopes were separated from other nuclides through the UTEVA column. Also, 90Sr was separated from other hindrance elements such as Ca2+, Ba2+ and Y3+ with the Sr Spec column. Finally, Am/Cm fractions were purified with the DGA and anion exchange resins. After α source preparation for the purified Pu, U and Am/Cm isotopes with the micro-coprecipitation method, the Pu, U and Am/Cm isotopes were measured by an alpha spectrometry. Strontium-90 was measured by a low level liquid scintillation counter. The radiochemical procedure for Pu, U and Am nuclides investigated in this study has been validated by application to IAEA Reference soils.

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Ion Chromatographic Method for the Simultaneous Determination of Anions and Cations in Firecrackers and Matches Samples as Known Potential Explosives

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.15.1.27570.138-148 ◽

2019 ◽

Vol 15 (1) ◽

pp. 138

Author(s):

Muhammad Amin ◽

Lee Wah Lim

Keyword(s):

Cation Exchange ◽

Anion Exchange ◽

Mobile Phase ◽

Limit Of Detection ◽

Reference Method ◽

Anion Exchange Column ◽

Exchange Column ◽

Relative Standard ◽

Cation Exchange Column

A reference ion chromatography method based on column switching has been presented for the simultaneous determining anions (Cl−, ClO3−, NO2−, SO42−, and NO3−) and/or cations (NH4+, Na+, K+, Ca2+, and Mg2+) using one pump, one type of mobile phase, and one detector. The reference method performed anion-exchange column and cation-exchange column and arranged serially via one 10-port valve. The determination of either anions or cations in one determination system could be made by switching the valve. When the use of 1.25 mM trimellitic acid as a mobile phase and the instrument was operated at a flow rate of 0.6 mL/min, five anions and five cations were determined on the anion-exchange column and the cation-exchange column, respectively. All anions target could be determined completely within 55 minutes, whereas the cations target could be determined within 35 minutes. The calculation of limit of detection using S/N=3 was 3.85 − 14.10 µM for anions and 2.95 − 10.58 µM for cations. The relative standard deviations of all ions were less than 3.82%, 3.29%, and 3.21% for retention time, peak area, and peak height, respectively. The reference method was then applied for the simultaneous determining anions and/or cations contained in firecrackers and matches samples as known potentially explosives.

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