Separation of Sodium, Potassium, Lithium, and Ammonium in Mixed-Mode HPLC

Separation type: Liquid Chromatography Mixed-mode








Inorganic cations and ammonia are usually analyzed by ion-exchange chromatography with a conductivity detector. Mixed-mode chromatography achieves the same goal with an ELSD detector. In addition to retaining ions, mixed-mode column can retain hydrophobic molecules also, making it possible to analyze a wide variety of ionic and non-ionic compounds in one run. In this method sodium, potassium, and lithium ions were separated along with ammonium ions on a Primesep 100 column. Detection technique is ELSD.



Condition

Column Primesep 100,  4.6×250 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer TFA
Flow Rate 1.0 ml/min
Detection ELSD

 

Description

Class of Compounds
Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Potassium,  Bromide, Ammonium

Application Column

Primesep 100

The Primesep family of mixed-mode columns offers a wide variety of stationary phases, boasting unprecedented selectivity in the separation of a broad array of chemical compounds across multiple applications. Corresponding Primesep guard columns, available with all stationary phases, do not require holders. SIELC provides a method development service available to all customers. Inquire about our specially-tailored custom LC-phases for specific separations.

Select options
Application Analytes:
Ammonium Ion
Lithium
Potassium
Sodium

Application Detection:
ELSD Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.