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  • Title: Selective and sensitive spectrophotometric method for determination of sub-micro-molar amounts of aluminium ion.
    Author: Shokrollahi A, Ghaedi M, Niband MS, Rajabi HR.
    Journal: J Hazard Mater; 2008 Mar 01; 151(2-3):642-8. PubMed ID: 17683861.
    Abstract:
    A simple and accurate spectrophotometric method for determination of trace and ultra-trace amounts of Al3+ ion in tap and wastewater sample has been described. Using the eriochrome cyanine R (ECR) in the presence of N,N-dodecyltrimethylammonium bromide (DTAB) as cationic surfactant spectrophotometric determination of Al3+ ion has been carried out. The Beer's law is obeyed over the concentration range of 4-400 ng mL(-1) of Al3+ ion with the detection limits of 0.14 ng mL(-1), while the molar absorptivity of complexes is 1.19x10(5) L mol(-1) cm(-1). The influence of type and amount of surfactant, pH, and amount of ligand on sensitivity of spectrophotometric method were optimized. The method has been successfully applied for Al3+ ion determination in real sample.
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