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No suppression – Simultaneous determination of monovalent inorganic ions using HPLC-ELSD

Applikationsnr.: VCH0019

No suppression – Simultaneous determination of monovalent inorganic ions using HPLC-ELSD

 

Commonly the analysis of highly polar compounds is realized with ion exchange (IEX) or ion chromatography (IC) and so users are often limited to particular methods(1). These methods usually go along with the use of suppressors or other additional equipment to enable the detection by conductivity measurement. Using a special HILIC mixed-mode column in combination with evaporative light scattering detection (ELSD) allows to apply a simple isocratic method with a standard LC system configuration.

  • Chromatogram of KH2PO4, (1) H2PO4 -, (2) K+

  • Chromatogram of NaClO3, (1) ClO3 -, (2) Na+

  • Chromatogram of NaCl, (1) Cl-, (2) Na+

  • Chromatogram of KI, (1) K+, (2) I

  • Chromatogram of LiBr, (1) Br-, (2) Li+

  • Chromatogram of mixed standard, (1) H2PO4 -, (2) Cl-, (3) Br-, (4) ClO3 -, (5) Na+, (6) Li+, (7) K+, (8) I-

  • Sample results for tap water, red – Na+, grey – Cl-

  • Overlay of tap water samples, (1) Cl-, (2) Na+

  • Overlay of mineral water samples, (1) Cl-, (2) Na+, (3) K+

Technische Daten

Spezifikationen

Methode HPLC
Modus HILIC
Substanzen lithium bromide, sodium chloride, potassium dihydrogenphosphate, sodium chlorate, potassium iodide
Schlüsselwörter HILIC, IC, IEX, mixed-mode, inorganic ions, monovalent ions, ELSD, evaporative light scattering detection, anions, kations
CAS Nummer 7550-35-8, 7647-14-5, 7778-77-0, 7775-09-9, 7681-11-0
Version Version 1/ 10/2021

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