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Figure 3 | Malaria Journal

Figure 3

From: Capillary electrophoresis for the assay of fixed-dose combination tablets of artesunate and amodiaquine

Figure 3

Stability of a standard solution. AS 2 g L-1, AQH 70 mg L-1, and IS 70 mg L-1in acetonitrile – 10 mM phosphate pH 3 (40:60, v:v) stored at room temperature. Operating conditions: background electrolyte, borate – SDS (25 mM sodium tetraborate buffer pH 9.2 – 30 mM SDS); capillary, 50 μm I.D. × 30 cm (20 cm); inj 3.5 nL; 15 kV; 25 ◦C; detection, λ = 214 nm. Dihydroartemisinin (DHA), a degradation product of AS was observed.

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