Simultaneous speciation analysis of As, Sb and Se redox couples by SF-ICP-MS coupled to HPLC

2014 ◽  
Vol 6 (14) ◽  
pp. 5112-5119 ◽  
Author(s):  
Debo Wu ◽  
Thomas Pichler
Keyword(s):  
Anion Exchange ◽  
Inorganic Arsenic ◽  
Speciation Analysis ◽  
New Method ◽  
Anion Exchange Column ◽  
Exchange Column ◽  
Redox Couples ◽  
Icp Ms

A new method for the simultaneous speciation analysis of inorganic arsenic (iii, v), antimony (iii, v) and selenium (iv, vi) using anion exchange column.

Isolation and Fast Purification o f Neocarzinostatin by FPLC-Ion Exchange Chromatography

1983 ◽  
Vol 38 (11-12) ◽  
pp. 939-942
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
New Method ◽  
Clinical Grade ◽  
Anion Exchange Column ◽  
Exchange Column ◽  
Culture Filtrates ◽  
Reproducible Method

Neocarzinostatin, a highly toxic antitum or protein containing an essential nonprotein chromophore, can be isolated and purified from culture filtrates of Streptomyces carzinostaticus. Usually a lengthy procedure of up to 60 h is necessary for the isolation, including several chromatographic steps partly under conditions which favour inactivation of the drug by release of chromophore. We describe a new method yielding practically clinical grade Neocarzinostatin from crude extracts in 20 min. This very fast and reproducible method was made possible by using a Mono Q anion exchange column filled with monodisperse gel material which has been recently developed

New Method for Measurement of Guanidinosuccinic Acid in Serum and Urine

1974 ◽  
Vol 20 (5) ◽  
pp. 574-575 ◽  
Author(s):  
J Gróf ◽  
A Tankó ◽  
J Menyhárt
Keyword(s):  
Anion Exchange ◽  
New Method ◽  
Anion Exchange Column ◽  
Exchange Column ◽  
Guanidino Compounds ◽  
Modified Method ◽  
Guanidinosuccinic Acid ◽  
Serum And Urine

Abstract We describe a new method for measurement of guanidinosuccinate in serum and urine. To separate it from interfering guanidino compounds, it is adsorbed on and eluted from an anion-exchange column. The modified method requires less serum and is considerably faster than previous ones.

scholarly journals New Method for Simultaneous Arsenic and Selenium Speciation Analysis in Seafood and Onion Samples

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6223
Author(s):  
Katarzyna Karaś ◽  
Anetta Zioła-Frankowska ◽  
Marcin Frankowski
Keyword(s):  
Anion Exchange ◽  
Inductively Coupled Plasma ◽  
High Performance ◽  
Speciation Analysis ◽  
New Method ◽  
Ammonium Ion ◽  
Dimethylarsinic Acid ◽  
Anion Exchange Column ◽  
Analytical Technique ◽  
Inductively Coupled

This paper presents a new method for the simultaneous speciation analysis of arsenic (As(III)-arsenite, As(V)-arsenate, DMA-dimethylarsinic acid, MMA-methylarsonic acid, and AsB-arsenobetaine) and selenium (Se(IV)-selenite, Se(VI)-selenate, Se-Methionine, and Se-Cystine), which was applied to a variety of seafood and onion samples. The determination of the forms of arsenic and selenium was undertaken using the High-Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry (HPLC–ICP–MS) analytical technique. The separation of both organic and inorganic forms of arsenic and selenium was performed using two analytical columns: an anion exchange column, Dionex IonPac AS22, containing an alkanol quaternary ammonium ion, and a double bed cation–anion exchange guard column, Dionex Ion Pac CG5A, containing, as a first layer, fully sulfonated latex for cation exchange and a fully aminated layer for anion exchange as the second layer. The ammonium nitrate, at pH = 9.0, was used as a mobile phase. The method presented here allowed us to separate the As and Se species within 10 min with a suitable resolution. The applicability was presented with different sample matrix types: seafood and onion.

Sign in / Sign up

Export Citation Format

Share Document