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Fig. 2.
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Electrophoregrams: a - sample II: 1 – oxalic acid; 2 – fumaric acid; 3 – succinic acid; 4 – citric acid; 5 – benzoic acid; b – sample III: 1 – oxalic acid; 2 – fumaric acid; 3 – succinic acid; 4 – citric acid; 5 – benzoic acid. Capillary 50 pm x 40 cm; phosphate buffer solution + CTAB + isopropanol; 190 nm; 20°C; -17 kV.
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