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Cobalt complex compounds, anions with pyridine

Atomic absorption spectrometry (AAS) has been used to determine cationic and anionic surfactants indirectly. Two methods have been put forward based on the formation of the ion pair between surfactant and hexanitrocobaltate (for cationic compounds) or bis(benzoyl)pyridine thiosemicarbazone cobalt (III) (for anionic compounds). In the former case, the complex is extracted with 1,3-dicloroethane and in the latter with an isopentylacetate and isopentyl alcohol mixture. Concentration of cobalt is determined in the organic phase using electrothermal atomic absorption spectroscopy (ETAAS), while for anionic surfactants, flame atomic absorption spectroscopy (FAAS) can also be used. Interferences like metal ions, anions and organic compounds do not have a great relevance. The two methods were applied to determine dodecyltrimethylammonium bromide in shampoos (Chattaraj and Das, 1992) and sodium lauryl sulfate (SDS) in toothpastes (Chattaraj and Das, 1994). [Pg.302]


See other pages where Cobalt complex compounds, anions with pyridine is mentioned: [Pg.230]    [Pg.279]    [Pg.120]    [Pg.126]    [Pg.179]    [Pg.190]    [Pg.252]    [Pg.1064]    [Pg.458]    [Pg.6242]    [Pg.1468]    [Pg.252]    [Pg.6241]    [Pg.41]    [Pg.5937]    [Pg.260]    [Pg.100]    [Pg.201]    [Pg.209]    [Pg.37]    [Pg.170]    [Pg.434]    [Pg.20]   
See also in sourсe #XX -- [ Pg.6 , Pg.192 ]

See also in sourсe #XX -- [ Pg.6 , Pg.192 ]




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Anion complexation

Anion, , complex

Cobalt anion

Cobalt complex compounds

Cobalt complex compounds with pyridine

Cobalt complex compounds, anions

Cobalt complexes pyridine

Cobalt complexes, with

Cobalt compounds

Complex anionic

Complexes pyridine

Complexes with cobalt compounds

Compounds anionic

Pyridine compounds

Pyridine with

Pyridines complexation

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