Study of aluminium speciation in freshwaters by sorption on a chelating resin

Pesavento, Maria; Biesuz, Raffaela; Palet, Cristina

doi:10.1039/a708887f

Cited by 26 publications

(18 citation statements)

References 25 publications

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“…The species of aluminium in the natural waters here examined were investigated by the same RT method previously used for low salinity waters [7,14]. It is particularly useful to investigate strong complexes, as those found in some low salinity waters previously investigated [7,14].…”

Section: Resultsmentioning

confidence: 99%

“…The GF-AAS determinations were performed using LÕvov platform and the thermal program previously reported [7].…”

Section: Apparatusmentioning

confidence: 99%

“…Only few investigations have been carried out directly in natural waters, probably due to the low concentration of aluminium in not acidic natural waters. This was done in a previous investigation on some fresh and drinkable waters [7,8], using a method based on the competitive sorption of aluminium on complexing resins, which allows aluminium to be separated from the sample solution and its preconcentration. In the previous investigation it was found that a large part of aluminium in the considered sample is linked to high stability complexes, with reaction coefficients higher than that calculated for the hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

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Aluminium speciation in natural water by sorption on a complexing resin

Alberti¹,

D’Agostino²,

Palazzo³

et al. 2005

Journal of Inorganic Biochemistry

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Section: Resultsmentioning

confidence: 99%

“…The GF-AAS determinations were performed using LÕvov platform and the thermal program previously reported [7].…”

Section: Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aluminium speciation in natural water by sorption on a complexing resin

Alberti¹,

D’Agostino²,

Palazzo³

et al. 2005

Journal of Inorganic Biochemistry

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“…It has been generally recognized that "labile monomeric Al (operationally defined as Al i )" including free aqua-ion and some inorganic complexes is the toxic form, of which the labile positively charged monomeric form (Al 3+ , Al(OH) 2+ and Al(OH) 2 + ) is the most harmful, while fluoro and organic complexes are thought to be less potent. Therefore, the development of methods for speciation of Al, notably analysis of toxic Al in environmental and biological samples, is of more important relevance than those for determination of total Al, and has received considerable attention worldwide [3,4,5,6,7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Morin applied in speciation of aluminium in natural waters and biological samples by reversed-phase high-performance liquid chromatography with fluorescence detection

Lian

Kang

et al. 2003

Analytical and Bioanalytical Chemistry

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A reversed-phase high-performance liquid chromatographic method with fluorescence detection for the determination of labile monomeric aluminium has been developed through pre-column complexation using morin as the analytical reagent. The highly fluorescent aluminium-morin complex (excitation wavelength 418 nm, emission wavelength 490 nm) was separated on a Spherisorb ODS 2 column with an eluent consisting of 30% methanol and 70% water (pH 1.0 with perchloric acid). The most remarkable point of this protocol was that only the most toxic aluminium species, that is, free aqua-aluminium ion and its monomeric hydroxo complex ions, selectively respond among various aluminium complexes. This strategy has been successfully applied to direct fractionation of the toxic aluminium in natural waters and biological samples without any pretreatment.

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“…5), and it was also stable under strongly acidic conditions. In addition, this species was evidently kinetically inert in view of the fact that it could be eluted as a discrete peak on the IDAS column, which has strongly complexing functional groups and is expected to behave similarly to Chelex 100 when used for resin titration speciation [26,37]. However, this species still can react with ECR to produce a coloured, detectable complex.…”

Section: Analysis Of Paper Mill Process Watermentioning

confidence: 99%

Determination of aluminium using high performance chelation ion chromatography

Tria

Haddad

Nesterenko³

2008

J of Separation Science

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Original PaperDetermination of aluminium using high performance chelation ion chromatographyThe suitability of high performance chelation ion chromatography (HPCIC) using postcolumn reaction for the separation and determination of dissolved aluminium in complex samples was investigated. Use of a chelating ion-exchanger allowed for differentiation between kinetically labile and kinetically stable species of aluminium. Separation through a combination of chelation and cation-exchange was achieved using a 20064.0 mm id column packed with particles of silica functionalised with iminodiacetic acid, with nitric acid -potassium chloride eluents. A temperature anomaly causing a five-fold increase in column efficiency for aluminium is believed to be a result of localised temperature effects in the particular type of instrument used. Postcolumn reagents investigated for the photometric detection included Tiron, Pyrocatechol Violet, Chrome Azurol S, and Eriochromem Cyanine R. The lowest detection limit (2.7 lg/L for a 100 lL sample volume) was achieved using 0.25 mM Eriochrome Cyanine R in 0.2 M hexamine (pH 6.1) with 1 mM cetyltrimethylpyridium bromide (CTAB). The optimised HPCIC system was applied successfully to the quantification of labile aluminium in paper mill process water.

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Study of aluminium speciation in freshwaters by sorption on a chelating resin

Cited by 26 publications

References 25 publications

Aluminium speciation in natural water by sorption on a complexing resin

Aluminium speciation in natural water by sorption on a complexing resin

Morin applied in speciation of aluminium in natural waters and biological samples by reversed-phase high-performance liquid chromatography with fluorescence detection

Determination of aluminium using high performance chelation ion chromatography

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