Sensitive Spectrophotometric Method for Determination of Trace Aluminium in Water Samples by Morin

Abstract:

The chromogenic reaction of Al (III) with morin was studied in the presence of cationic surfactant cetyltrimethylammonium bromide(CTMAB), Al (III) was capable of reacting with morin to form a stable yellow complex in 0.17 mol l^-1 glacial acetic acid media. The complex had a 1∶2 molar ratio for Al (III) and morin . In the presence of cationic surfactant CTMAB, the sensitivity of chromogenic reaction was largely improved. At the maximum absorption wavelength of 425nm, the apparent molar absorptivity was 1. 59×10⁵l·mol ^{- 1}·cm^{- 1} .Beer′s law was obeyed in the range of 0 to 8μg/ 25ml Al (III) . The method has been applied successfully to the determination of trace amount of aluminium in tap and river water samples.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 2173-2176
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.2173
• Online since: July 2011
• Authors: Dong Yuan, Da You Fu
• Keywords: Aluminum (Al), Cetyltrimethylammonium Bromide (CTMAB), Morin, Spectrophotometry

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