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- W2045524816 abstract "Acetylene black (AB) nanoparticles were readily dispersed into water in the presence of dihexadecyl hydrogen phosphate. After evaporation of water, the surface of glassy carbon electrode (GCE) was coated with AB nanoparticles as confirmed from the scanning electron microscopy measurements. The transmission electron microscopy images indicated that AB nanoparticles possessed porous structure. Electrochemical behavior of chrysophanol was studied, and a sensitive oxidation peak was observed in pH 3.6 acetate buffer solution. Compared with the bare GCE, the AB nanoparticles-modified GCE greatly increased the oxidation peak current of chrysophanol, showing remarkable signal enhancement effect. The influences of pH value, amount of AB, accumulation potential and time on the signal enhancement of chrysophanol were studied. As a result, a novel electrochemical method was developed for the determination of chrysophanol. The linear range was from 1.5 to 200 μgL(-1), and the detection limit was 0.51 μgL(-1) (2.01 × 10(-9)M) after 2-min accumulation. Finally, this method was used in traditional Chinese medicines, and the results consisted with the values that obtained by high-performance liquid chromatography." @default.
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- W2045524816 date "2013-03-01" @default.
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- W2045524816 title "Electrochemical determination of chrysophanol based on the enhancement effect of acetylene black nanoparticles" @default.
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- W2045524816 doi "https://doi.org/10.1016/j.colsurfb.2012.10.015" @default.
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