PEREZ, M.; RIFFO, M.; VALENZUELA, M. L.; PEÑA-FARFAL, C. G. PRELIMINARY DETERMINATION OF ESSENTIAL AND TOXIC ELEMENTS IN BUCKWHEAT (Fagopyrum esculentum) BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY. Journal of the Chilean Chemical Society, v. 67, n. 4, p. 5734-5736, 10 Jan. 2023.