Optical and colorimetric characteristics of a nickel(II) complex with 1-nitroso-2-naphthol-3,6-disulfonic acid

Autor:	T. O. Samarina, V. M. Ivanov, V. N. Figurovskaya
Rok vydání:	2011
Předmět:	Nickel Chemistry Reagent Inorganic chemistry chemistry.chemical_element General Chemistry 1 nitroso 2 naphthol Molar absorptivity Chromaticity Colorimetry Stoichiometry Nuclear chemistry
Zdroj:	Moscow University Chemistry Bulletin. 66:235-240
ISSN:	1935-0260 0027-1314
DOI:	10.3103/s0027131411040043
Popis:	Optimal conditions for the complexation of nickel(II) with 1-nitroso-2-naphthol-3,6-disulfonic acid were found using the spectrophotometric method. The optimal pH interval for complexation was 7.2–8.8 with a fivefold excess of the reagent. The stoichiometric Me: R composition was 1: 2. The molar absorption coefficient and colorimetric characteristics of the complex were determined in the nickel(II) concentration range of (4.09–16.35) × 10−5 M. The molar absorption coefficient was (7.52 ± 0.05) × 103 (n = 10, P = 0.95). The most sensitive chromaticity functions were B [(1.83 ± 0.04) × 105] and G [(1.76 ± 0.05) × 105] (n = 9, P = 0.95).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ecc561fa3ff3b4d4179cfb6ce2ebfb29 https://doi.org/10.3103/s0027131411040043 Zobrazit plný text záznamu Full text from SpringerLink