title: Analytical capability of a medium power capacitively coupled plasma for the multielemental determination in multimineral/multivitamin preparations by atomic emission spectrometry.
abstract: A method for multielemental (Ca, Cr, Cu, Fe, K, Mg, Mn, Na, P and Zn) determination in multimineral/multivitamins by atomic emission spectrometry in a medium power radiofrequency capacitively coupled plasma (275 W) and low Ar consumption (0.4 L min(-1)) is proposed. Determinations were performed on commercially available tablets and a standard reference material after acidic high-pressure microwave assisted digestion and using the standard additions procedure. The detection limits (mg g(-1)) were in the range 0.003 (Na)-1.5 (P) and were not depreciated by the non-spectral interference of mineral matrices of K, Ca, Mg and Na excepting Zn and P. Found concentrations corresponded generally to the labelled contents with recovery in the range of 90-107% and 1.0-13.0% repeatability. The proposed technique could be an advantageous alternative to the more expensive inductively coupled plasma atomic emission spectrometry in the quality control of multimineral/multivitamin preparations.
authors: Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Arany Janos 11, 400028 Cluj-Napoca, Romania. ftibi@chem.ubbcluj.ro
authors: Tiberiu
authors: T
authors: Frentiu
authors: Michaela
authors: M
authors: Ponta
authors: Eugen
authors: E
authors: Darvasi
authors: Maria
authors: M
authors: Frentiu
authors: Emil
authors: E
authors: Cordos
mesh_terms: D057230:Limit of Detection; D008903:Minerals / Q000032:analysis*; D011786:Quality Control; D013054:Spectrophotometry, Atomic / Q000295:instrumentation / Q000379:methods*; D014815:Vitamins / Q000032:analysis*
chemical_list: D008903:Minerals; D014815:Vitamins