+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Spectrometrical discussion on accelerative mechanism of methanol in chromium chrome azurol s reaction

Spectrometrical discussion on accelerative mechanism of methanol in chromium chrome azurol s reaction

Acta Histochemica et Cytochemica 9(4): 306-314

An addition of methanol into the aqueous solution of chrome azurol S (CAS) accelerates the reaction of CAS with Cr. The mechanism of the accelerative effect of methanol was described spectrometrically. CAS has 4 chemical species, and the 3rd chemical species (in which 3 protons are released) is most liable to chelate Cr. In a high pH range, the 3rd chemical species increases in the solution, but at the same time an increase in hydroxy ion interrupts the reaction between CAS and Cr. Spectrometrical measurements indicate that the added methanol accelerates the dissociation of the 2nd chemical species of CAS in a low pH range and the reduction of the 4th chemical species in a high pH range. The 3rd chemcical species is highly concentrated in the solution, leading to an acceleration of the Cr-CAS reaction without any interruption caused on an increase of OH-.

(PDF 0-2 workdays service: $29.90)

Accession: 006460168

Download citation: RISBibTeXText

Related references

Histochemical staining of chromium by chrome azurol s. Acta Histochemica et Cytochemica 11(1): 46-51, 1978

Chelate staining part 6 accelerative mechanism of methanol in chromium staining. Acta Histochemica et Cytochemica 9(1): 98, 1976

Spectrophotometric determination of trace uranium with Eriochrome Azurol B and Chrome Azurol S in the presence of the cationic surfactant Septonex. Talanta 36(5): 549-555, 1989

Spectrophotometric study of the reaction of zirconium with Chrome Azurol S and fluoride. Talanta 28(12): 889-900, 1981

Studies and analytical application of reaction of imipramine with chrome azurol S. Journal of Pharmaceutical & Biomedical Analysis 30(3): 553-560, 15 October, 2002

Spectrophotometric determination of beryllium in air by a sensitised Chrome Azurol S reaction. Analyst 102(1211): 137-140, 1977

Mechanism of surfactant-induced changes in the visible spectrometry of metal-Chrome Azurol S complexes. Analytical Chemistry 56(9): 1632-1640, 1984

Composition-ratio determination of Chrome Azurol S (CAS) with Cu(2+) and research on dynamic reaction process of CAS with EDTA. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy 71(3): 1021-1026, 2008

Hydrolysis and speciation of Al bound to pectin and plant cell wall material and its reaction with the dye chrome azurol S. Journal of Agricultural and Food Chemistry 58(9): 5553-5560, 2010

The affinity of phosvitin for aluminum measured with the dye, chrome azurol S. Journal of Inorganic Biochemistry 55(4): 249-254, 1994

Photometric determination using chrome chloride Azurol S Cetylpyridinium. Yen K'uang Ts'e Shih = Acta Petrologica Mineralogica et Analytica 1(2): 70-74, 1982

Development of an optical fibre Al(III) sensor based on immobilised chrome azurol S. Talanta 42(9): 1337-1344, 1995

A sensitive spectrofluorimetric determination of human serum albumin with chrome azurol S. Analytica Chimica Acta 178(2): 337-339, 1985