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A fast analytical method for determination of macro- and microelements in foodstuff samples by ICP OES using diluted organic acid extraction was developed. The sample preparation was carried out employing ultrapure 50% (v/v) formic acid on a heating block. The elements studied were Ca, Cu, Fe, K, Mg, Mn, Na, P and Zn. The accuracy of the method was evaluated by analyzing three different certified...
Fiberglass with a composition of 29% Li 2 O, 1% ZrO 2 , 5% BaO, and 65% Si 2 O was coated with Nb 2 O 5 using the metallo-organic decomposition (MOD) technique. The morphology and coating homogeneity of the fibers was evaluated, using the scanning electron microscopy (SEM) technique, which revealed the presence of niobium distributed uniformly over the surface...
The efficiency of niobium(V) oxide as a sorbent phase for solid phase microextraction (SPME) was investigated. The thin glass–ceramic rod was coated with niobium(V) oxide using chemical vapor deposition and Nb 2 O 5 as a chemical precursor. Optimum conditions for the preparation and conditioning of the fibers are presented. The fibers were used for the extraction of a mixture of alcohols...
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