Salicylic acid using square-wave voltammetry with pre-concentration by solid phase extraction onto magnetite nanoparticles

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Phetlada Sanchayanukun
Prapanee Pengmarerng
Sasithorn Muncharoen


A pencil lead electrode coupling with nano-magnetite adsorption as pre-concentration and extraction in order to analyze salicylic acid (SA) was demonstrated in this work. The optimum conditions for nano-magnetite (Fe3O4) preparation by co-precipitation of ferrous/ferric ions were studied. The parameters affecting the shape and size of the nano-magnetite particles such as the types of base, addition rate, temperature, stirring rate and pH were optimized. The morphology was characterized by Fourier transform infrared spectroscopy, energy dispersive X-ray spectroscopy and transmission electron microscopy. The application of nano-magnetite as the solid phase extractor for the square-wave voltammetry (SWV) of SA gave good results.


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Sanchayanukun, P., Pengmarerng, P., & Muncharoen, S. (2019). Salicylic acid using square-wave voltammetry with pre-concentration by solid phase extraction onto magnetite nanoparticles. Interdisciplinary Research Review, 14(1), 35–41. Retrieved from
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