title: Graphite furnace-atomic absorption spectrophotometric determination of palladium in soil.
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) x 10(4) L mol(-1) cm(-1) at lambda(max) 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.
authors.affiliation: School of Studies in Chemistry, PT Ravishankar Shukla University, India.
authors.forename: K S
authors.initials: KS
authors.lastname: Patel
authors.forename: P C
authors.initials: PC
authors.lastname: Sharma
authors.forename: P
authors.initials: P
authors.lastname: Hoffmann
mesh_terms: D010165:Palladium / Q000032:analysis*; D012680:Sensitivity and Specificity; D012987:Soil / Q000032:analysis*; D013054:Spectrophotometry, Atomic / Q000379:methods*
chemical_list: D012987:Soil; D010165:Palladium