Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 151, Issue 2-3, Pages 642-648Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2007.06.037
Keywords
eriochrome cyanine R (ECR); spectrophotometric method; N,N-dodecyltrimethylammonium bromide (DTAB); Al3+ ion
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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 1.19 x 10(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. (C) 2007 Elsevier B.V. All rights reserved.
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