Published March 2006 | Version v1
Journal article Metadata-only

Pyrogallol red and bromopyrogallol red in new optical methods for the determination of molybdenum(VI) and tungsten(VI)

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Khimicheskij Fakul'tet, Moscow (Russian Federation)

Description

The complexation of molybdenum(VI) and tungsten(VI) with pyrogallol red (PR) and bromopyrogallol red (BPR) in the presence of a cationic surfactant, cetylpyridinium bromide was studied. Conditions of the preconcentration of molybdenum(VI) and tungsten(VI) as complexes with PR and BPR on Silochrom S-120 were found. The concentration coefficients were no lower than 67 for a volume of the aqueous phase of 20 ml and a mass of the sorbent of 0.3 g. Chromaticity characteristics of the complexes in solutions and on the sorbent were determined. It was demonstrated that the complex of molybdenum(VI) with BPR in the presence of cetylpyridinium bromide should be used in the analysis of materials with low concentrations of molybdenum

Abstract (Russian)

Изучено комплексообразование молибдена(VI) и вольфрама(VI) с пирогаллоловым красным (ПК) и бромпирогаллоловым красным (БПК) в присутствии катионного ПАВ - бромида цетилпиридиния (ЦП). Найдены условия концентрирования молибдена(VI) и вольфрама(VI) в виде комплексов с ПК и БПК на силохроме С-120. Коэффициенты концентрирования не ниже 67 при объеме водной фазы 20 мл и навеске сорбента 0.3 г. Определены цветометрические характеристики комплексов в растворе и на сорбенте. Показана целесообразность использования комплекса молибдена(VI) с БПК в присутствии ЦП при анализе объектов с низким содержанием молибдена

Additional details

Additional titles

Original title (Russian)
Пирогаллоловый красный и бромпирогаллоловый красный в новых оптических методах определения молибдена(VI) и вольфрама(VI)

Publishing Information

Journal Title
Zhurnal Analiticheskoj Khimii
Journal Volume
61
Journal Issue
3
Journal Page Range
p. 261-268
ISSN
0044-4502
CODEN
ZAKHA8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37073432
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ABSORPTION SPECTRA; ACCURACY; CHEMISORPTION; DISTRIBUTION FUNCTIONS; DYES; MOLYBDENUM COMPLEXES; ORGANIC BROMINE COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; SENSITIVITY; SPECTROPHOTOMETRY; SPECTROSCOPY; STEELS; SULFONIC ACIDS; SURFACTANTS; TUNGSTEN COMPLEXES; WATER
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; COMPLEXES; FUNCTIONS; HYDROGEN COMPOUNDS; IRON ALLOYS; IRON BASE ALLOYS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SORPTION; SPECTRA; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPLEXES

Optional Information

Notes
21 refs., 2 figs., 6 tabs.