Simultaneous determination of Pt and Rh by catalytic adsorptive stripping voltammetry, using hexamethylene tetramine (HMTA) as complexing agent

Bismuth–silver bimetallic nanosensor application for the voltammetric analysis of dust and soil samples

“…4C at the GC/Bi-AgFE nanosensor shown linear response with linear calibration equation y = 0.708x À 0.0434 and y = 0.222x + 0.0282 for Pd(HDMG) 2 and Rh(HDMG) 3 , respectively. These results obtained for the simultaneous determination of Pd(II) and Rh(III) complexes were compared with results obtained by other researchers [5,6,10,11]. In comparison with the work done by Van der Horst et al [10] and Silwana et al [11], better defined peaks were observed for Pd-Rh complexes in this presented study with lower detection limits.…”

“…This observation is an indication that the sensor is more favourable for Pd(II) and Pt(II) studies. The results obtained for the simultaneous determination of Pt(II) and Rh(III) complexes were compared with results obtained by Dalvi et al [5]. The work done by Dalvi et al [5] showed better defined peaks and with better detection limits for the Pt-Rh complexes as in the present study.…”

“…According to the literature, simultaneous determination of Pd(II) and Rh(III) or Pt(II) and Rh(III) were done at HMDE and BiFEs surfaces and was also possible in this study [5,6,10,11]. Fig.…”

“…To obtain very good results it's better to avoid nitric acid in the analysis. In the literature for the determination of PGMs using voltammetric techniques, a large number of papers involve the use of hanging mercury drop electrode as the working electrode [5][6][7]. Only in a few cases other electrodes such as modified carbon paste electrodes [8,9] and bismuth film electrodes [10,11] were used.…”

Quantification of Noble Metals in Biological and Environmental Samples

“…Close reduction peak potentials and severe matrix effects limit direct application of AV for simultaneous detection of PGMs. Optimizing the electrolyte composition can allow simultaneous detection of Pt, Pd, and Rh [101] and of Pt and Rh [102]. AV is extremely sensitive to organic matrices.…”