Determination of rhodium in waters by Mg–W cell-electrodeposition and electrothermal atomic absorption spectrometry

Synthesis of a novel chelating resin and its use for selective separation and preconcentration of some trace metals in water samples

“…Therefore, a separation/preconcentration technique is necessary, prior to determination of trace metals by an instrumental technique [9,10]. The widely used techniques for the separation and preconcentration of trace metals include coprecipitation [3,11], liquid-liquid extraction [12], cloud point extraction [5,6,8,9], electrodeposition [13] and solid phase extraction [1,2,7].…”

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].…”

Electrothermal Atomic Absorption Spectrometry and Related Techniques

“…Metal tube atomizers, though not available commercially, are sometimes preferred over graphite furnaces for ETAAS, especially for the determination of less volatile "carbide-forming" metals. Kaneco et al (37) electrodeposited Rh in a galvanic cell with Mg and W sheets as electrodes. The W sheet was then inserted in a W-tube furnace for the atomization of Rh.…”