Inorganic ruthenium determination

Ballschmiter, K. Inorganic trace analysis combining thin-layer and gas-chromatography Indirect determination of ruthenium as its thiosemicarbazide chelate, J. Chromatogr. 8,... 

The oxidation of thiocyanate is also well-known to cause electrode passivation. Although it is usually attributed to accumulation of electrolysis products, it may be just deactivation of the surface by consumption of the oxide. The latter occurs, for example, with the oxidation of As(III) at a Pt (oxide-coated) electrode.We have found that with an electrode modified with the ruthenium-containing inorganic film, mvRu, the problem is alleviated. The general characteristics of flow injection determinations of thiocyanate with an amperometric detector based on the mvRu electrode are summarized in Table 1. The sample throughput was calculated as described above. 

Table 1. Flow injection amperometric determination of thiocyanate at a glassy carbon electrode modified with a Ruthenium-containing inorganic film.

In solid-state inorganic chemistry. MCD is an important technique for the determination of color centers in alkali-metal halide crystals, rare earths, and highly symmetric compounds such as hexaha-lides of platinum or ruthenium. In organic chemistry, MCD is observed with, e,g.. metal poiphy-rins, pyrimidine ba.ses, and nucleoside derivatives. 

---