Abstract
A new and sensitive procedure for the graphite furnace-atomic absorption spectrophotometric (GF-AAS) determination of Pd in soil at nanogram level is described. The method is based on prior separation and enrichment of the metal as Pd(II)-SnCl3 –-N-butylacetamide (BAA) complex into 1-pentanol (PN) by solvent extraction method. The value of the molar absorptivity of the complex in three solvents, i.e. ethyl acetate, 1-pentanol, chloroform, lie in the range of (0.70–2.75) × 104 L mol–1 cm–1 at λmax 360–440 nm. The metal could be enriched into organic solvent, i.e. PN, up to 10-folds. The sensitivity (A = 0.0044) of the method in the term of the peak height was 0.5 ng Pd/mL of the aqueous solution at an enrichment factor (EF) of 5. Optimization of analytical variables during enrichment and GF-AAS determination of the metal are discussed. The method has been applied for the analysis of Pd to soil samples derived from roads and highways in Germany.
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Received: 22 February 2000 / Revised: 28 April 2000 / Accepted: 3 May 2000
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Patel, K., Sharma, P. & Hoffmann, P. Graphite furnace-atomic absorption spectrophotometric determination of palladium in soil. Fresenius J Anal Chem 367, 738–741 (2000). https://doi.org/10.1007/s002160000483
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DOI: https://doi.org/10.1007/s002160000483