Determination of palladium by on-line flow-injection direct spectrophotometry in environmental samples using 2,2′-furyldioxime as a chelator

A new, sensitive, and accurate on-line spectrophotometric method for the determination of palladium was developed. The method is based on the reaction between Pd(II) and 2,2′-furyldioxime in nitric acid medium. The absorbance of the complex is spectrophotometrically measured at 410nm with a diode-ar...

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Bibliographic Details
Published in:Talanta (Oxford) 2013-05, Vol.109, p.26-30
Main Authors: Saçmacı, Şerife, Kartal, Şenol
Format: Article
Language:English
Subjects:
2,2′-Furyldioxime
absorbance
acidity
chelating agents
Chelating Agents - chemistry
detection limit
Diode-array detection
Direct determination
Environmental Monitoring - instrumentation
Environmental Monitoring - methods
Equipment Design
Flow Injection Analysis - instrumentation
Flow Injection Analysis - methods
Geologic Sediments - analysis
ions
Limit of Detection
nitric acid
Oximes - chemistry
Palladium
Palladium - analysis
Reproducibility of Results
sediments
spectrophotometers
Spectrophotometry - instrumentation
Spectrophotometry - methods
spectroscopy
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Summary:A new, sensitive, and accurate on-line spectrophotometric method for the determination of palladium was developed. The method is based on the reaction between Pd(II) and 2,2′-furyldioxime in nitric acid medium. The absorbance of the complex is spectrophotometrically measured at 410nm with a diode-array detector. Several factors that influence the analytical performance of the method such as acidity, flow rates of the reagent and sample solutions, concentration of the reagent, and effect of interfering ions were investigated. The calibration curve was obtained in the range of 0.01–10.0mgL−1 Pd(II). The detection limit was 0.1µgL−1 while the relative standard deviation of the method was found to be 1.2% (n=13) at 4.0mgL−1 Pd(II) level. The sample throughput was 275h−1. The method was successfully applied to the determination of palladium in catalytic converter, anodic slime, road sediment, ore, and water samples. [Display omitted] •A new direct flow-injection system (FI) was developed for the determination of Pd(II).•2,2′-furyldioxime was firstly used in the determination of Pd(II) direct FI.•The method has been developed without separation/preconcentration procedure before the measuring step.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2013.03.030