Croatica Chemica Acta, Vol. 30 No. 1, 1958.
Izvorni znanstveni članak
Spectrophotometric and Polarographic Determination of Ruthenium in Oxalic Acid
Š. Mesarić
; Department of Physical Chemistry, Institute »Rudjer Boskovic«, Zagreb, Croatia, Yugoslavia
M. Branica
; Department of Physical Chemistry, Institute »Rudjer Boskovic«, Zagreb, Croatia, Yugoslavia
Sažetak
A spectrophotometric and polarographic method is proposed for the determination of ruthenium tetroxide absorbed in oxalic acid. Spectrophotometric measurements of ruthenium in 1 N oxalic acid were made at 375 mμ. In the concentration range from 2 to 36 micrograms of ruthenium per milliliter the relative standard error amounted 14 % to 1 %, respectively. The polarographic determination was performed in a supporting electrolyte containing 1 N oxalic acid and 0.006 % thymol (as a maximum suppressor). The determination is applicable in the concentration range from 4 to 120 micrograms ruthenium per milliliter with a relative standard error of 15 do 0.7 %, espectively. Hydrochloric, sulfuric and perchloric acid up to of 0.5 N does not interfere. In the presence of nitric acid spectrophotometric and polarographic determinations of ruthenium are impossible.
Ključne riječi
Hrčak ID:
245624
URI
Datum izdavanja:
25.3.1958.
Posjeta: 687 *