Determination of Sulphiting Agents in Raw and Processed Meat: Comparison Between a Modified Monier-Williams Method and the Direct Analysis by Ion Chromatography with Conductometric Detection

2017 ◽  
Vol 10 (12) ◽  
pp. 3956-3963 ◽  
Author(s):  
Marco Iammarino ◽  
Aurelia Di Taranto ◽  
Diego Centonze
Keyword(s):  
Ion Chromatography ◽  
Direct Analysis ◽  
Processed Meat ◽  
Conductometric Detection

scholarly journals Derivatization Ion Chromatography for the Determination of Monoethanolamine in Presence of Hydrazine in PHWR Steam-Water Circuits

2011 ◽  
Vol 2011 ◽  
pp. 1-5
Author(s):  
Ayushi D. ◽  
Arijit Sengupta ◽  
Sangita D. Kumar ◽  
A. G. Kumbhar ◽  
G. Venkateswaran
Keyword(s):  
Ion Chromatography ◽  
Mobile Phase ◽  
Limit Of Detection ◽  
Accurate Method ◽  
Feed Water ◽  
Relative Standard ◽  
Conductometric Detection ◽  
Mode A ◽  
Eluent Acetone

A simple, rapid and accurate method for the determination of monoethanolamine (MEA) in PHWR steam-water circuits has been developed. MEA is added in the feed water to provide protection against corrosion while hydrazine is added to scavenge dissolved oxygen. The quantitative determination of MEA in presence of hydrazine was accomplished using derivatization ion chromatography with conductometric detection in nonsuppressed mode. A Metrosep cation 1-2 analytical column and a Metrosep cartridge were used for cation separation. A mixture of 4 mM tartaric acid, 20% acetone and 0.05 mM HNO3was used as eluent. Acetone in the mobile phase leads to the formation of different derivatives with MEA and hydrazine. The interferences due Na+and NH4 +were eliminated by adopting a simple pretreatment procedure employing OnGuard-H cartridge. The limit of detection limit of MEA was 0.1 μg mL−1and the relative standard deviation was 2% for the overall method. The recovery of MEA added was in the range 95%–102%. The method was applied to the determination of MEA in steam generator water samples.

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