Home
Resources
Publications
Chromium(III) Determination With 1,5-diphenylcarbazide Based on the Oxidative Effect of Chlorine Radicals Generated From CCl4 Sonolysis in Aqueous Solution

Chromium(III) Determination With 1,5-diphenylcarbazide Based on the Oxidative Effect of Chlorine Radicals Generated From CCl4 Sonolysis in Aqueous Solution

Sivanildo da Silva Borges, Mauro Korn, José Luis Fontes da Costa Lima

Anal Sci. 2002 Dec;18(12):1361-6.

PMID: 12502090

Abstract:

Oxidation of Cr(III) during sonication in carbonated aqueous solutions saturated with CCl4 leads to the quantitative formation of Cr(VI) and provides a simple and rapid method for spectrophotometric chromium determination with 1,5-diphenylcarbazide. The key to this method is the production of chlorine radicals when aqueous solution saturated with CCl4 is exposed to ultrasonic waves of 40 kHz. The effects of sonication period, CCl4 solution volume, acidity, and interferences were discussed. The time required for a single determination is lower than 2 min. The relative standard deviation obtained for aqueous solutions with 1 microg of Cr was < 2% (N = 10) and the calculated detection limit (3sigma) was 5 ng of Cr.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP140227	1,5-Diphenylcarbazide		140-22-7	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: