Extraction of niobium complex with pyrocatechol violet in the presence of pyridine and trichloroacetic acid

Journal Article · Sat Sep 01 00:00:00 EDT 1973 · Ukr. Khim. Zh., v. 39, no. 9, pp. 939-942

OSTI ID:4390126

Tananaiko, M M; Vdovenko, O P; Shevchuk, V V

Spectroscopic studies of the Nb(V) complex with pyrocatechol violet (PV) in the presence of pyridine (Py) and trichloroacetic acid (TCA) showed the formation of an isobutanol-extractable complex, Nb: PV: Py: TCA = 2: 1: 1: 3, an association of the complex OH/sub 2/PVPyH/sup 3+/ with the TCA anion. The possibility was demonstrated of using the quaternary complex for extraction- photometric determination of niobium with a sensitivity to 2 mu g in 25 ml of extract. (tr-auth)

• Research Organization: Kiev State Univ.
• NSA Number: NSA-29-007560
• OSTI ID: 4390126
• Journal Information: Ukr. Khim. Zh., v. 39, no. 9, pp. 939-942, Journal Name: Ukr. Khim. Zh., v. 39, no. 9, pp. 939-942; ISSN UKZHA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

*NIOBIUM-- SOLVENT EXTRACTION
2-METHYLPROPANOL
ACETIC ACID
CHLORINATED ALIPHATIC HYDROCARBONS
N40120 -- Chemistry--Analytical & Separations Chemistry--Chemical & Spectral Procedures
N40140* --Chemistry--Separation Procedures
NIOBIUM COMPLEXES
ORGANIC CHLORINE COMPOUNDS
PYRIDINES
PYROCATECHOL VIOLET
SENSITIVITY