Assessment of palladium nanoparticles as chemical modifier for lead determination in leached extracts from petroleum waste by high-resolution continuum source atomic absorption spectrometry

Palladium nanoparticles were evaluated as a potential chemical modifier for lead determination by high-resolution continuum source graphite furnace atomic absorption spectrometry. Hydrophilic palladium nanocubes and nanospheres synthesised with sizes varying from 3 to 22 nm. Positive effects in terms of sensitivity thermal stability upon the use observed, especially using nm spherical-shaped. The mass influenced relative signal intensity analyte, although effectiveness appeared be suppressed an important extent presence matrix components leached extracts obtained petroleum wastes. optimised pyrolysis atomisation temperatures were, respectively, 800 °C 2300 °C, 200 ng nanoparticles. limit detection (4 µg L−1) precision (better than 18 %) considered satisfactory proposed analysis. method accuracy, recovery tests comparison results inductively coupled plasma spectrometry, was proven adequate enable Pb waste. successfully applied determine oily sludge drill cuttings concentrations ranged <13 354.4 L−1.