Determination of inorganic anions by ion chromatography with ultraviolet absorbance detection

1983 ◽  
Vol 55 (6) ◽  
pp. 851-854 ◽  
Author(s):  
Richard J. Williams
Keyword(s):  
Ion Chromatography ◽  
Inorganic Anions ◽  
Ultraviolet Absorbance ◽  
Absorbance Detection

scholarly journals Determination of Trace Inorganic Anions in Weak Acids by Single-Pump Column-Switching Ion Chromatography

2010 ◽  
Vol 48 (7) ◽  
pp. 553-558 ◽  
Author(s):  
H. Zhu ◽  
H. Chen ◽  
Y. Zhong ◽  
D. Ren ◽  
Y. Qian ◽  
...  
Keyword(s):  
Ion Chromatography ◽  
Column Switching ◽  
Inorganic Anions ◽  
Weak Acids

scholarly journals Determination of Oxalate and Some Inorganic Anions in Green and Black Tea

2013 ◽  
Vol 67 (4-5) ◽  
pp. 429-432 ◽  
Author(s):  
Elena Yusenko ◽  
Evgeniya Polyntseva ◽  
Anna Lyzhova ◽  
Olga Kalyakina
Keyword(s):  
Oxalic Acid ◽  
Green Tea ◽  
Ion Chromatography ◽  
Black Tea ◽  
Inorganic Anions ◽  
Sample Treatment ◽  
Oxalate Concentration ◽  
Relative Standard ◽  
Oxalate Ions

Abstract Oxalate concentration differs in various daily consumed food products. The role of oxalic acid in the human body is very significant, as its compounds are responsible for the stability of biological membranes. However, insoluble calcium and magnesium oxalates can be accumulated in the body in the form of kidney stones. Oxalate concentration has been measured by high performance liquid, gas after derivatization and ion chromatography (IC). The most effective method for the simultaneous determination of oxalate and inorganic anions is ion chromatography with conductometric detection. Here, we report the results of the measurement of oxalic acid in bleak and green tea samples. Separation was performed by IC on an anion-exchange column Shodex IC SI-90 with surface-layer sorbent and conductimetric detection. The main analytical features of the method were: limit of detection of oxalic acid 0.03 mg/l, linear range 0.1-20 mg/l, correlation 0.9998, relative standard deviation 1%. The method did not need specific sample treatment and was successfully applied to the analysis of black and green tea samples. Oxalic acid was determined in the ranges 16.7-84 mg/l for green tea and 63-116 mg/l for black tea. Green tea contained lower oxalate ions concentration than black tea. The IC method has a lower detection limit for oxalate ions than HPLS and GC, ten and two times less, respectively

Simultaneous determination of inorganic anions and metal ions by suppressed ion chromatography

1999 ◽  
Vol 382 (3) ◽  
pp. 291-299 ◽  
Author(s):  
Maria Concetta Bruzzoniti ◽  
Edoardo Mentasti ◽  
Corrado Sarzanini
Keyword(s):  
Metal Ions ◽  
Simultaneous Determination ◽  
Ion Chromatography ◽  
Inorganic Anions
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