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. Two open-vessel wet digestion methods using mixtures of (i) HNO3 and H2SO4 (WD I), and (ii) HNO3, H2SO4 and H2O2 (WD II) were developed and optimized for determination of a wide range of elements in plant reference materials by inductively coupled plasma atomic emission spectrometry. A Plackett-Burman fractional factorial experimental design with eight experiments for seven variables was used for...
Two digestion procedures have been tested on nut samples for application in the determination of essential (Cr, Cu, Fe, Mg, Mn, Zn) and non-essential (Al, Ba, Cd, Pb) elements by inductively coupled plasma-optical emission spectrometry (ICP-OES). These included wet digestions with HNO 3 /H 2 SO 4 and HNO 3 /H 2 SO 4 /H 2 O 2 . The later...
A simple and reliable multi-element procedure for determination of essential (Cr, Cu, Fe, Mg, Mn, Zn) and toxic (Al, Cd, Pb) elements in legumes by inductively coupled plasma-optical emission spectrometry (ICP-OES) was developed. In this contribution, four different digestion procedures were thoroughly investigated and accurately evaluated with respect to their affect on the analysis of legumes. These...
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