Spectrophotometric and high-order derivative spectrophotometric study of the indium-1-(2-pyridylazo)-2-naphthol complex in the aqueous phase
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 111 (5) , 551-553
- https://doi.org/10.1039/an9861100551
Abstract
A spectrophotometric and derivative spectrophotometric study of the indium-1-(2-pyridylazo)-2-naphthol complex in the aqueous phase in the presence of cetyltrimethylammonium bromide, a surfactant, is reported. The molar absorptivity, specific absorptivity and Sandell's sensitivity of the complex at its λmax. (550 nm) were found to be 1.91 × 104 l mol–1 cm–1, 166 l g–1 cm–1 and 6.02 ng cm–2, respectively. Beer's law is valid for the range 5.0 × 10–6 to 1.0 × 10–4 M ln3+.Keywords
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