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http://repository.aaup.edu/jspui/handle/123456789/729
Title: | Sensitive Spectrophotometric Determination of La(III) with 1 (2 Pyridylazo)-2-napht-hol (PAN) |
Authors: | ali z. abu zuhri k. abdul hadi |
Issue Date: | 1984 |
Publisher: | Microchemical Journal |
Abstract: | A simple and sensitive method for spectrophotometric determination of lanthanum has been developed. At pH 9.6, in presence of 50% ethanol, lanthanum reacts with 1-(-2-pyridylazo)-2-naphthol (PAN) to form a red complex which has two absorption maxima, at 545 and 510 nm. The molar absorptivity at 545 nm is 0.55 × 10^4 liters · mol?1 cm?1. On the other hand, lanthanum reacts with PAN in pure ethanol to form a red complex at 530 nm, with high molar absorptivity (8 × 10^4 liters · mol?1 cm?1). |
URI: | http://repository.aaup.edu/jspui/handle/123456789/729 |
Appears in Collections: | Faculty & Staff Scientific Research publications |
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