Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Original Papers
Green Analytical Methodology Using Indian Almond (Terminalia Catappa L.) Leaf Extract for Determination of Aluminum Ion in Waste Water from Ceramic Factories
Pimporn INSAINSupada KHONYOUNGPonlayuth SOOKSAMITISomchai LAPANANTNOPPAKHUNJaroon JAKMUNEEKate GRUDPANKatja ZAJICEKSupaporn KRADTAP HARTWELL
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2013 Volume 29 Issue 6 Pages 655-659

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Abstract

The use of natural reagents from plant extracts for chemical analysis is one of the approaches in the development of low cost and environmentally friendly green analytical chemistry methodology. Here, crude extract from Indian Almond (Terminalia Catappa L.) leaves was used for colorimetric determination of aluminum by monitoring the absorbance of the Al3+-extract complex at 435 nm. Dry leaves and freeze-dried fresh leaf extract can be kept for extended use. A simple flow injection analysis (FIA) system was also employed for rapid analysis (approximately 180 injections/h). The linear working range up to 100 mg L−1 was established with a detection limit (blank + 3SD) of 0.8 mg L−1, a limit of quantitation (blank + 10SD) of 2.4 mg L−1, and a relative standard deviation of 3 – 5%. This simple green analytical chemistry methodology was applied for the determination of Al3+ in waste water samples from ceramic factories. The results agreed well with the results obtained from the ICP-OES technique.

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© 2013 by The Japan Society for Analytical Chemistry
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