Improved ion-exchange column chromatography for Cu purification from high-Na matrices and isotopic analysis by MC-ICPMS

2020 ◽  
Vol 35 (4) ◽  
pp. 776-783 ◽  
Author(s):  
James Andrew Kidder ◽  
Alexandre Voinot ◽  
Kaj Vaughan Sullivan ◽  
Donald Chipley ◽  
Marissa Valentino ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Column Chromatography ◽  
High Salinity ◽  
Isotopic Analysis ◽  
High Recovery ◽  
Exchange Column ◽  
Ion Exchange Column ◽  
Chromatographic Procedure ◽  
Cu Isotopes ◽  
Pure Cu

Measurements of Cu isotopes from low concentration and high salinity matrices require high recovery and purity prior to measurement. A new automated two-stage chromatographic procedure yields highly pure Cu separations, low procedure blanks and much-improved reproducibility.

Quantitative Method for Estimating Fecal Amino Acids

1975 ◽  
Vol 21 (10) ◽  
pp. 1437-1440 ◽  
Author(s):  
Christopher W I Owens ◽  
Walfredo Padovan
Keyword(s):  
Amino Acids ◽  
Ion Exchange ◽  
Column Chromatography ◽  
Quantitative Method ◽  
Normal Values ◽  
Amino Nitrogen ◽  
Exchange Column ◽  
Ion Exchange Column ◽  
Fresh Stool

Abstract We describe a method for quantitatively estimating 24 ninhydrin-reacting substances, including the commoner amino acids, in fecal dialysate prepared from ingested dialysis bags retrieved from fresh stool. It is accurate to 2 µmol of α-amino nitrogen per liter of fecal dialysate, and for most substances recovery of added standards is 100%. It involves dilution, ultrafiltration, and automated ion-exchange column chromatography of the dialysate. Some normal values are provided.

Induced binding of proteins by ammonium sulfate in affinity and ion-exchange column chromatography

2007 ◽  
Vol 70 (3) ◽  
pp. 493-498 ◽  
Author(s):  
Tsutomu Arakawa ◽  
Kouhei Tsumoto ◽  
Daisuke Ejima ◽  
Yoshiko Kita ◽  
Yasushi Yonezawa ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Ammonium Sulfate ◽  
Column Chromatography ◽  
Exchange Column ◽  
Ion Exchange Column

scholarly journals Fractionnement sur échangeur anionique des colloïdes glucidiques solubles (gommes et pectines) du jus de raisin sain

OENO One ◽  
1980 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Denis Dubourdieu ◽  
Pascal Ribéreau-Gayon
Keyword(s):  
Ion Exchange ◽  
Column Chromatography ◽  
Galacturonic Acid ◽  
Exchange Column ◽  
Ion Exchange Column ◽  
Neutral Sugars

<p style="text-align: justify;">Les gommes d'un moût de raisins sains sont fractionnés par chromatographie d'échange anionique sur D.E.A.E. Sephadex A 25. On peut ainsi caractériser des gommes neutres qui ne contiennent que des oses neutres dans leur molécule et des gommes acides qui comportent des oses neutres et de l'acide galacturonique.</p><p style="text-align: justify;">+++</p><p style="text-align: justify;">Gums of juice from healthy grappes are fractionnated by ion exchange column chromatography on D.E.A.E. Sephadex A 25. So are separated neutral gums, containing only neutral sugars in their molecules, from acidic gums, that contains neutral sugars and galacturonic acid.</p>

Phosphonodipeptides: synthesis and separation of diastereoisomers

1982 ◽  
Vol 60 (24) ◽  
pp. 3081-3084 ◽  
Author(s):  
Paweł Kafarski ◽  
Barbara Lejczak ◽  
Przemsław Mastalerz ◽  
Jerzy Szewczyk ◽  
Czesław Wasielewski
Keyword(s):  
Ion Exchange ◽  
Column Chromatography ◽  
Exchange Column ◽  
Ion Exchange Column

Diastereoisomeric mixtures of phosphonodipeptides, prepared from racemic dialkyl 1-aminoalkanephosphonates, were separated by ion-exchange column chromatography. Phosphonodipeptides were found to be much more readily available from dialkyl 1-aminoalkanephosphonates than from the corresponding free acids and the mixed carboxylic – carbonic anhydride method was found to be the most effective one.

Colorimetric analysis of deoxycytidine in urine after separation by ion-exchange column chromatography

1968 ◽  
Vol 23 (2) ◽  
pp. 230-240 ◽  
Author(s):  
I-Wen Chen ◽  
James G. Kereiakes ◽  
Ben I. Friedman ◽  
Eugene L. Saenger
Keyword(s):  
Ion Exchange ◽  
Column Chromatography ◽  
Colorimetric Analysis ◽  
Exchange Column ◽  
Ion Exchange Column
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