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A mechanized system for the determination of low levels of quickly reacting aluminium in natural waters

✍ Scribed by Lars-Göran Danielsson; Anders Sparén

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
858 KB
Volume
306
Category
Article
ISSN
0003-2670

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✦ Synopsis

A continuous flow system has been connected to a graphite furnace atomic absorption spectrometer. The system is used to determine low levels of "quickly reacting Al" (Al,,) in natural waters. In the flow system, alum~nium reacts with oxine for 2.3 s and the formed complex is then extracted into toluene. Iron interference is minimized with a masking buffer present in the reagent. Via a simpie interface, the toluene extract is introduced into the graphite tube. Good repeatabilities (R.S.D. ca. 2%, n = 10) were obtained, both for standard solutions and for natural waters. The detection limit is < 0.5 pg I-', and the sample throughput using 3 injections/sample, is ca. 10 samples h-'. The system has been used for determining Al,, in tap water, and is well suited for aluminium fractionation in near-neutral waters.

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