Title of article
Atomic Absorption Spectrometric Determination of Lead after Extraction and Preconcentration with 5-Br-PADAP
Author/Authors
Taher, Mohammad Ali Department of Chemistry - Shahid Bahonar University - Kerman
Pages
8
From page
1
To page
8
Abstract
Lead is quantitatively retained on 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP)-ammonium tetraphenylborate with microcrystalline naphthalene or by a column method in the pH range 4.0-6.0 from a large volume of aqueous solutions of various samples with preconcentration factor of 60. After filtration, the solid mass consisting of the lead complex and naphthalene was dissolved with 5 mL of dimethylformamide and the metal was determined by atomic absorption spectrometry. The calibration curve is linear in the range of 1.9-180 mg/mL in DMF with a relative standard deviation 1.7&. The interference of a large number of anions and cations has been studied.
Keywords
Alloys and biological samples , Atomic absorption spectrometry , 2-(5-Bromo-2-pyridyazo)-5-diethylamminophenol , Trace lead determination
Journal title
Astroparticle Physics
Serial Year
2001
Record number
2428647
Link To Document