Microcolumn sorption of antimony(III) chelate for antimony speciation studies

Preliminary results of a quick, simple method of detecting antimony in water samples

“…When no antimony was added, the concentration in the sample was lower than the LOD of the method (similarly to the reported by other authors [14][15][16]). Obviously, this does not invalidate the method proposed in this preliminary stage, because the permitted values by both the EU and the USA legislations are higher than the LOD of the proposed method.…”

“…Moreover, ICP-MS was the technique established by the EPA for the determination of contaminants (such as antimony) in drinking water [11]. Flame atomic absorption spectrometry (FAAS) and graphite furnace atomic absorption spectrometry (GFAAS) have been employed as well [1,[12][13][14][15][16].…”

“…Some interesting points need to be brought up when mentioning the GFAAS methods described in literature [1,[12][13][14][15][16]. Firstly, the background correction has been successfully carried out by means of deuterium lamps [1,16] or longitudinal Zeeman effect background correctors, with transversely heated graphite atomizers (THGA) [12][13][14][15].…”

“…Firstly, the background correction has been successfully carried out by means of deuterium lamps [1,16] or longitudinal Zeeman effect background correctors, with transversely heated graphite atomizers (THGA) [12][13][14][15]. Secondly, the samples usually needed to be spiked and/or pre-concentrated if quantitative measurements were to be done, due to the low natural levels of antimony in analysed samples.…”

Solid-Phase Extraction on Alkyl-bonded Silica Gels in Inorganic Analysis

“…131 After reduction to the trivalent state by using potassium iodide and ascorbic acid, the total arsenic was also retained on the column, eluted with ethanol and determined by ET AAS in spiked tap water and reference water samples.…”