✦ LIBER ✦

Kinetic Spectrophotometric Determination of Traces of Sulfite Based on Its Additional Reaction with Methyl Green

✍ Scribed by A. Jabbari; M. Shamsipur

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 252 KB
Volume: 48
Category: Article
ISSN: 0026-265X
DOI: 10.1006/mchj.1993.1108

No coin nor oath required. For personal study only.

✦ Synopsis

A simple, rapid, and sensitive kinetic method has been developed for the determination of traces of sulfite ((0.05-2.5 \mu \mathrm{g} / \mathrm{ml})) based on the addition reaction of sulfite with methyl green at (\mathrm{pH} 8) and (25^{\circ} \mathrm{C}). The reaction is monitored spectrophotometrically by measuring the decrease in absorbance of the dyestuff at (625 \mathrm{~nm}) by the fixed time method. The limit of detection is (0.05 \mu \mathrm{g} / \mathrm{ml}) and the relative standard deviation for (0.5 \mu \mathrm{g} / \mathrm{ml}) sulfite is (2.88 %). The interfering effect of various ions was studied. The method was applied to the determination of sulfite in a number of fruit juices. 1993 Academic Press, Inc.

📜 SIMILAR VOLUMES

Spectrophotometric Determination of Trac

Spectrophotometric Determination of Trace Amounts of Nitrite Ion Based on Its Catalytic Effect in the Reaction between Thymol Blue and Bromate

✍ Abbas Afkhami; Fahimeh Jalali 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 69 KB

A simple, sensitive, and selective method for rapid determination of nitrite is described which is based on its catalytic effect in the reaction between thymol blue and bromate in acidic media. The reaction is monitored spectrophotometrically by measuring the decrease in absorbance at 543 nm by a fi

Kinetic Catalytic Determination of Trace

Kinetic Catalytic Determination of Trace Nitrite Based on the Oxidation of Malachite Green with Bromate Monitored Potentiometrically Using Coated-Wire Electrodes

✍ Elmorsy Khaled; Hassan N. A. Hassan; Barsoum N. Barsoum; Karel Vytřas 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 93 KB

Fluorimetric Kinetic-FIA Determination o

Fluorimetric Kinetic-FIA Determination of Ag(I) Based on Its Catalytic Effect on the Reduction Reaction of Safranine with Iodide

✍ A. Safavi; M.R. Baezzat 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 93 KB

A sensitive kinetic fluorimetric flow injection method has been developed for the determination of Ag(I) over the range 100-2500 ng. The method is based on the catalytic effect of Ag(I) on the reduction reaction of safranine by iodide. Method development includes optimization of reagent concentratio

Catalytic Determination of Trace Amounts

Catalytic Determination of Trace Amounts of Tellurium(IV) Based on Its Catalytic Effect in the Reduction Reaction of Bromate with Hydrazinium Dichloride

✍ A. Safavi; A. Afkhami; A. Massoumi 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 255 KB