University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Industrial -> anode mud

Citations 2

"Flow Injection Analysis Of Palladium"
Guijinshu 1989 Volume 10, Issue 4 Pages 39-42
He Xingcun et al.

Abstract: Pd was determined in secondary anode mud and chloride residue by flow injection spectrophotometry after reacting with chlorophosphonazo-DBS in 1.0 mol/mL H2SO4 and measurement of the absorbance of the complex at 617 nm. There was a linearity between peak height and Pd(II) in the concentration range 0.20-6.0 mg/mL. The detection limit was 0.08 mg Pd(II)/mL. The stoichiometry of the complex was Pd(II):chlorophosphonazo-DBS 1:2. The variance of repeat analyzes was 2.2-2.4% and the recovery of Pd(II) was 96.7-104%.
Palladium Spectrophotometry

"Application Of 2-(4-chloro-2-phosphophenylazo)-7-(2,4,6-tribromophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic Acid In The Determination Of Palladium By Flow Injection Analysis"
Huaxue Shiji 1991 Volume 13, Issue 1 Pages 3-5
Cai Yaqi, He Xingcun, Chen Xingguo, and Hu Zhide

Abstract: A flow injection spectrophotometric method for the determination of Pd with use of the cited reagent (I) was developed. To determine Pd in anode mud, a 2-g sample was heated on a hot plate for 15 min, cooled, treated with 15 mL of concentrated H2SO4 and 5 mL of concentrated HNO3 and the solution was evaporated to dryness. The residue was dissolved in water and a 100 µL sample was injected into a carrier stream of 0.02 M H2SO4 which merged sequentially with 3 M H2SO4 and a 0.2% solution of I (0.8 mL min-1). After heating at 80°C, the absorbance of the mixture was measured. The calibration graph was rectilinear up to 0.7 µg mL-1 of Pd. The relative error was ~3% and recoveries were 98 to 100%. Large amounts of 17 foreign ions are tolerated.
Palladium Spectrophotometry Heated reaction Interferences