TY - JOUR ID - 37787 TI - Extraction and Determination of Trace Amounts of Palladium by Narrow-Bore Tube Dispersive Liquid-Liquid Microextraction and UV/Vis Spectrophotometry JO - Nashrieh Shimi va Mohandesi Shimi Iran JA - NSMSI LA - en SN - 1022-7768 AU - Moradi, Mohammad AU - Saremi, Mina AU - Kaykhaii, Massoud AU - Soleymani, Ali Reza AD - Department of Chemistry, Faculty of Science, Malayer University, Malayer, I.R. IRAN AD - Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, I.R. IRAN Y1 - 2022 PY - 2022 VL - 40 IS - 4 SP - 261 EP - 272 KW - Narrow-bore tube dispersive liquid-liquid microextraction KW - Palladium KW - Water analysis KW - UV/Vis spectrophotometry DO - N2 - In this research, a simple, rapid, and effective microextraction technique, named “narrow-bore tube dispersive liquid-liquid microextraction” is introduced for the extraction and preconcentration of palladium from aqueous samples, followed by its UV/Vis spectrophotometric determination. To perform the extraction, a solution of palladium and cetylpridinium chloride surfactant was poured into a glass narrow-bore tube. p-dimethyl aminobenzilidene rhodanine (PDR), heptanol, and ethanol were used as the complexing agent, extraction solvent, and dispersing solvent, respectively. The effective parameters affecting micro-extraction efficiency; including type and volume of extraction and dispersing solvents, pH of the sample solution, concentration of surfactant and ligand, sample volume, and injection time were investigated and optimized. Under the optimized conditions, the calibration curve was linear in the range of 40-1300 µg mL-1 for Pd, and reproducibility (as relative standard deviation) was better than 5.5%. The limit of detection of the method was calculated to be 6.4 µg mL-1 with an enrichment factor of 37.5. The method was applied successfully for the extraction and determination of palladium in two mineral and tap water samples. UR - https://www.nsmsi.ir/article_37787.html L1 - https://www.nsmsi.ir/article_37787_296d865dfb1918f833d54605f88773a4.pdf ER -