Speciation of trace amounts of aluminium in percolating water of forest soil by online coupling HPLC-ICP-MS

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

“…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].…”

The effect of two kinds of eluents on the speciation of Al, Mn, and Fe by size-exclusion chromatography of some Brazilian soil solutions

“…Using water as eluent, most of the detected compounds were eluted close to the exclusion limit (void limit). The cation exchange capacity of Superdex 75 HR is reported to be low (Kagedal et al, 1991;Hils et al, 1999). However, it seems to be large enough to cause electrostatic repulsion between the gel and the organic compounds of the sample.…”

Determination of Polymeric Aluminum in Soil Extracted with a Modified Anion-Exchange Resin as a Solid-Phase Adsorbent by ICP-AES

“…The polymeric Al species is usually obtained only by difference, or calculated by subtraction or operational definition. 16,28 (ii) Few methods can be employed for separating polymeric Al species. The content of polymeric Al species is relatively lower, which results in a lower sensitivity.…”