Flow-injection spectrophotometric determination of aluminium based on chrome azurol S and cetylpyridinium chloride

Selective and sensitive spectrophotometric method for determination of sub-micro-molar amounts of aluminium ion

“…In comparison to the results presented in this paper with respect to other previously reported in Table 1, it can be seen that this method is superior to those in terms of selectivity [13,15,19,21], linear range [13,15,19,21], detection limit [14][15][16]22,23] and using the surfactant led to short equilibrium time.…”

“…However, some of the problems of the method based on ECR are the serious interferences by Fe(III), Mn(II) and F − , which widely exist in environment samples, and its sensitivity is not high enough to determine low concentrations of Al 3+ ion. The characteristic performances of some spectrophotometric method for aluminium determination are presented in Table 1 [8,[12][13][14][15][16][17][18][19][20][21][22][23][24]. Application of micelles in analytical chemistry involves the beneficial alteration of metal ion-ligand complex spectral properties via surfactant association.…”

Simultaneous determination of Fe(III) and Al(III) by first-derivative spectrophotometry and partial least-squares (PLS-2) method – Application to post-haemodialysis fluids

“…Numerous chromogenic reagents, like pyrocatechol violet (PCV) [36], chrome azurol S (CAS) [37,38] and eriochrome cyanine R (ECR) [39,40], have been reported for the simultaneous spectrophotometric determination of aluminium and iron in water, plants, soils, lubricating oils, and haemodialysis fluids. These triphenylmethane reagents were also compared in some papers [41,42].…”

Flow injection spectrophotometric determination of Al in hemodialysis solutions

“…The chromogenic reagents that have been used for the Al determination are chrome azurol S and cetylpyridinium chloride [21], pyrocatechol violet [22], aluminon [23], eriochrome cyanine R with (and without) cetyltrimethylammonium bromide (CTAB) and alizarin violet [13]. The association of a cationic surfactant with the chromogenic reagent promotes the micelles formation of high molar absorptivity and, therefore, high sensitivity [24].…”