ISSN:
0021-8383
Schlagwort(e):
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The formation of a red coloured chelate (λmax 455 mμ) between ammonium vanadate and sodium alizarin-3-sulphonate has been taken advantage of, in the colorimetric determination of pentavalent vanadium on a micro-scale. The colour formation is instantaneous and the colour intensity is constant between 5°C and 70°C and pH 3.5 and 5.8. The system adheres to BEERS Law over a range of 0.10 to 3.67 p. p. m. of vanadium. The sensitivity is 0.051 γ/cm2 (Sandell) and 0.51 γcm2 (Practical) Copper, beryllium, bismuth, iron, aluminum, cerium, uranium, thorium, tungsten, molybdenum, carbonate, borate, citrate, and tartrate interfere in the determination.
Zusätzliches Material:
3 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/prac.19630200502
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