scholarly journals Methods development for separation of inorganic anions, organic acids and bases, and neutral organic compounds by ion chromatography and capillary electrophoresis

1999 ◽  
Author(s):  
Jie Li
Keyword(s):  
Capillary Electrophoresis ◽  
Organic Acids ◽  
Organic Compounds ◽  
Ion Chromatography ◽  
Inorganic Anions ◽  
Methods Development ◽  
Acids And Bases ◽  
Neutral Organic Compounds

Simultaneous analysis of organic acids and inorganic anions in silage by capillary electrophoresis

2010 ◽  
Vol 161 (1-2) ◽  
pp. 58-66 ◽  
Author(s):  
Hisaaki Hiraoka ◽  
Eiichi Ishikuro ◽  
Tetsuhisa Goto
Keyword(s):  
Capillary Electrophoresis ◽  
Organic Acids ◽  
Inorganic Anions ◽  
Simultaneous Analysis

Organic acids and inorganic anions in Bayer liquors by ion chromatography after solid-phase extraction

2007 ◽  
Vol 14 (2) ◽  
pp. 191-195 ◽  
Author(s):  
Fu-jin Zhong ◽  
Xiao-qing Chen ◽  
Shu-chao Zhang ◽  
Yue-ping Li
Keyword(s):  
Solid Phase Extraction ◽  
Organic Acids ◽  
Ion Chromatography ◽  
Solid Phase ◽  
Inorganic Anions ◽  
Phase Extraction ◽  
Bayer Liquors

Simultaneous Determination of Organic Acids, Inorganic Anions, and Alditols in Wine with Valve-Switching Ion Chromatography

2018 ◽  
Vol 81 (7) ◽  
pp. 1103-1108 ◽  
Author(s):  
Fangfang Li ◽  
Yan Bao ◽  
Yuexue Yu ◽  
He Cui ◽  
Yun Fa ◽  
...  
Keyword(s):  
Organic Acids ◽  
Simultaneous Determination ◽  
Ion Chromatography ◽  
Inorganic Anions ◽  
Valve Switching

scholarly journals On line pre-concentration for simultaneous determination of low molecular weight organic acids and inorganic anions in Amazonian river water samples employing ion chromatography with conductivity detection

2009 ◽  
Vol 39 (2) ◽  
pp. 397-404 ◽  
Author(s):  
Cristiane Azevedo Tumang ◽  
Alex Vladimir Krusche ◽  
Reynaldo Luis Victoria ◽  
Jeffrey Edward Richey
Keyword(s):  
Organic Acids ◽  
Simultaneous Determination ◽  
River Water ◽  
Ion Chromatography ◽  
Inorganic Anions ◽  
Electrochemical Detector ◽  
Conductivity Detection ◽  
Column Model ◽  
On Line

An ion chromatography procedure, employing an IonPac AC15 concentrator column was used to investigate on line preconcentration for the simultaneous determination of inorganic anions and organic acids in river water. Twelve organic acids and nine inorganic anions were separated without any interference from other compounds and carry-over problems between samples. The injection loop was replaced by a Dionex AC15 concentrator column. The proposed procedure employed an auto-sampler that injected 1.5 ml of sample into a KOH mobile phase, generated by an Eluent Generator, at 1.5 mL min-1, which carried the sample to the chromatographic columns (one guard column, model AG-15, and one analytical column, model AS15, with 250 x 4mm i.d.). The gradient elution concentrations consisted of a 10.0 mmol l-1 KOH solution from 0 to 6.5 min, gradually increased to 45.0 mmol l-1 KOH at 21 min., and immediatelly returned and maintained at the initial concentrations until 24 min. of total run. The compounds were eluted and transported to an electro-conductivity detection cell that was attached to an electrochemical detector. The advantage of using concentrator column was the capability of performing routine simultaneous determinations for ions from 0.01 to 1.0 mg l-1 organic acids (acetate, propionic acid, formic acid, butyric acid, glycolic acid, pyruvate, tartaric acid, phthalic acid, methanesulfonic acid, valeric acid, maleic acid, oxalic acid, chlorate and citric acid) and 0.01 to 5.0 mg l-1 inorganic anions (fluoride, chloride, nitrite, nitrate, bromide, sulfate and phosphate), without extensive sample pretreatment and with an analysis time of only 24 minutes.

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