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Flow-injection spectrophotometric determination of aluminium in water with pyrocatechol violet

✍ Scribed by Oddvar R∅yset

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
455 KB
Volume
185
Category
Article
ISSN
0003-2670

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✦ Synopsis

Optimum conditions for the adaptation of the spectrophotometric pyrocatechol violet method for aluminium to a flow-injection system are described. The detection limit is 3 pg Al 1-l and calibration graphs are linear up to 3 or 10 mg 1-l (with 2OOql or lo-r1 injection loops, respectively). The relative standard deviation is <2% at 0.1 mg Al 1-l. Potential interferences of 40 common inorganic ions and of 20 organic substances, including fulvic acid, are reported. With the use of conventional masking agents and predigestion of samples with high organic content, the method is suitable for determining total aluminium in natural waters.

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