Differential Pulse Polarographic Determination of Rhodium(III) and Ruthenium(III) in Synthetic Samples after Preconcentration of Their Quinolin-8-olate Complexes onto Microcrystalline Naphthalene

A multi-element solid-phase extraction method for trace metals determination in environmental samples on Amberlite XAD-2000

“…The basic principle of SPE of trace metal ions is the transfer of analytes from aqueous phase to the active sites of solid phase. For this purpose, various adsorbents including activated carbon [15,16], silica gel [17], microcrystalline naphthalene [18,19], C 18 cartridges [20], Chelex-100 [21], Alumina [22], polyurethane foam [23,24] have been used.…”

Ionic liquid ultrasound assisted dispersive liquid–liquid microextraction method for preconcentration of trace amounts of rhodium prior to flame atomic absorption spectrometry determination

“…In comparison with the other reported methods [40][41][42][43][44][45], the IL-USA-DLLME/FAAS shows a comparatively low detection limit (0.37 ng mL −1 ), a high enrichment factor (29.3) and better dynamic range (4.0-500.0) for Rh(III) in a short extraction time (2 min). In fact, the IL-USA-DLLME has higher enrichment factor and lower detection limit (0.37 ng mL −1 ) than all the other methods except LI-TLS/CPE/ETAAS [40].…”

A simple and selective spectrophotometric flow injection determination of trace amounts of ruthenium by catalytic oxidation of safranin-O

“…Thus, the increasing importance of the use of ruthenium in widely different fields, particularly in pharmacology [3][4][5][6], metallurgy [7,8] and in high technology components [9,10], had made it necessary to develop simple, inexpensive and selective methods for determination of traces of ruthenium in various samples. Different methods have been reported for determination of this metal such as voltammetry [12], atomic absorption spectrometry [13], fluorimetry [14] and spectrophotometry [15][16][17][18]. The availability of spectrophotometric instruments and the simplicity of analytical procedure make the procedure very attractive for a wide range of applications.…”