Single-step solubilization of milk samples with N,N-dimethylformamide for inductively coupled plasma-mass spectrometry analysis and classification based on their elemental composition.

摘要: Abstract A single-step procedure for trace elements analysis of milk samples is presented. Solubilization with small amounts dymethylformamide (DMF) was assayed prior to inductively coupled plasma mass spectrometry (ICPMS) detection a high efficiency sample introduction system. All main instrumental conditions were optimized in order readily introduce the without matrix elimination. In assess and mitigate effects determination As, Cd, Co, Cu, Eu, Ga, Gd, Ge, Mn, Mo, Nb, Nd, Ni, Pb, Pr, Rb, Sm, S, Sr, Ta, Tb, V, Zn, Zr, matching calibration 103Rh as internal standard (IS) performed. The obtained limits between 0.68 (Tb) 30 (Zn) μg L−1. For accuracy verification, certified Skim powder reference material (BCR 063R) employed. developed method applied commercially available milks. Principal components used correlate content metals kind milk, obtaining classification according adults, baby or fortified outcomes highlight simple fast approach that could be trustworthy routine analysis, quality control traceability