Spectrophotometric determination of vanadium with disodium maleonitrile dithiolate

Autor:	Amarjyoti Basu, A. B. Chatterjee, Saswati P. Bag
Rok vydání:	1974
Předmět:	Dissociation constant chemistry.chemical_compound chemistry Molar ratio Reagent Inorganic chemistry Vanadium chemistry.chemical_element Molar absorptivity Absorption (chemistry) Acetonitrile Analytical Chemistry
Zdroj:	Mikrochimica Acta. 62:275-280
ISSN:	1436-5073 0026-3672
DOI:	10.1007/bf01219688
Popis:	Vanadium(IV) forms a deep green complex with disodium maleonitrile dithiolate, in 0.05N sulphuric acid in 50 % acetonitrile solution, having maximum absorption at 580 nm. The colour system obeys Beer's law from 0.6 to 10 p. p. m. with optimum concentration range 2.5 to 10 p. p. m. of vanadium. The % relative error is 2.65. The determination of composition by continued variation and molar ratio methods suggests a metal to reagent ratio of 1∶4, the calculated dissociation constant being of the order of 10−18. The molar extinction coefficient is 4890 while the sensitivity is 0.01μg/cm2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48d71e9f73ae9cd9206a914480bf8361 https://doi.org/10.1007/bf01219688 Zobrazit plný text záznamu Full text from SpringerLink