Chemical modifiers in the determination of molybdenum in human serum by electrothermal atomic absorption spectrometry

Arsenic determination in naphtha by electrothermal atomic absorption spectrometry after preconcentration using multiple injections

“…Multiple injection technique has been applied to in situ preconcentration of several metals such as nickel, 15,16 manganese, 16 cobalt, 16 iron, 16 copper, 16,17 molybdenum, 18,19 cadmium, 20,21 lead, 22 silicon 23 and chromium. 16,24 With this procedure, limits of detection in the ng L 21 level have been reached. No literature reference appears to be available on using multiple injections or ETAAS for arsenic analysis in naphtha samples.…”

Selective cloud point extraction and graphite furnace atomic absorption spectrometric determination of molybdenum (VI) ion in seawater samples

“…5), the optimal ashing and atomization temperatures were selected as 1450 and 2400 • C for Mo(VI), respectively. No chemical modifier was employed in the development of this method, as HNO 3 acted as a natural chemical modifier [35].…”

Determination of vanadium in Natural gas using graphite furnace atomic absorption spectrometry (GFAAS)

“…A recently published review presents several methods for determination of vanadium in crude oil and petroleum products, such as inductively coupled plasma (ICP)optical emission spectrometry (6) , ICP mass spectrometry (7) , X-ray fluorescence spectroscopy (8) , and even highperformance liquid chromatography with UV detection (9) . By using the technique of graphite furnace atomic absorption which is offering advantages over other techniques since the results from a simple dilution with acidic medium-solvent and ashing were found to be identical (10,11) . Stability of metal concentration in sample and calibration solutions might became a serious problem under this conditions (12,13) .The use of modifiers became an essential part of electrothermal atomic absorption spectrometry (ETAAS).…”