Simple, fast, and simultaneous determination of orthophosphate, pyrophosphate, and tripolyphosphate by capillary electrophoresis with capacitively coupled contactless conductivity detection
Larissa J. Barboza,
Kionnys N. Rocha,
Dosil P. de Jesus
Abstract:This work describes a novel analytical method using capillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C4D) for simultaneous, simple, and rapid determination of three inorganic phosphates (orthophosphate, pyrophosphate, and tripolyphosphate) widely used as food additives and in pharmaceutical formulations. A background electrolyte composed of 0.5 mol L–1 acetic acid provided fast separation (around 3.0 min) and good separation efficiency and peak resolution. Linearity … Show more
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