Chemical modification in electrothermal atomic absorption spectrometry

The application of ETAAS to the determination of Cr, Pb and Cd in samples taken during different stages of the winemaking process

“…Their role is to thermally stabilize the analyte or to change the sample matrix components into more volatile compounds. According to Tsalev different chemical modifiers are effective for the determination of Pb, Cd and Cr in various samples [13]. However, the application of modifiers for the determination of metals in different fractions of the winemaking process has not yet been extensively described in the literature.…”

Atomization Characteristic of Chromium on a Molybdenum Tube Atomizer by Electrothermal Atomic Absorption Spectrometry and Determination of Chromium in Biological Materials

“…A typical interference by a matrix element (aluminium) is illustrated in Fig. 4 (3,5,9,16,31,32). In these modifiers, Pd / Mg, (NH 4 ) 2 HPO 4 , NH 4 Cl, NH 4 NO 3 , Mg(NO 3 ) 2 , and ascorbic acid, reported to be useful as a matrix modifier for biological materials, were tested in the molybdenum atomizer.…”

Direct Determination of Lead in Smoke from Burned Crude Oil by Impaction Graphite Furnace Atomic Absorption Spectrometry

“…The use of chemical modifiers can improve the analysis of a metal in a complex matrix (16) nitrate, and ammonium dihydrogen phosphate were investigated for the determination of lead in smoke collected on the graphite (impactor) tube, but were not considered successful (14).…”