Spectrophotometric determination of chromium using indigo carmine : application in various samples
Other Title(s)
التقدير الطيفي للكروم باستخدام صبغة الأنديكوكارمين : التطبيق في نماذج مختلفة
Joint Authors
Shaykhu, Najih Hasan
Mahmud, Hind Ahmad
Source
Issue
Vol. 13, Issue 3 (30 Sep. 2016), pp.556-567, 12 p.
Publisher
University of Baghdad College of Science for Women
Publication Date
2016-09-30
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Topics
Abstract EN
A rapid, simple and sensitive spectrophotometric method for the determination of trace amounts of chromium is studied.
The method is based on the interaction of chromium with indigo carmine dye in acidic medium and the presence of oxalates as a catalyst for interaction, and after studying the absorption spectrum of the solution resulting observed decrease in the intensity of the absorption.
As happened (Bleaching) for color dye, this palace and directly proportional to the chromium (VI) amount was measured intensity of the absorption versus solution was figurehead at a wavelength of 610 nm.
A plot of absorbance with chromium (VI) concentration gives a straight line indicating that Beer’s law has been obeyed over the range of 0.5 -70 μg /25 ml, i.e., 0.02- 2.8 ppm with a molar absorptivity of chromium (VI) 1.71 104 l.mol-1.cm-1, Sandell’s sensitivity index of 0.0030 μg.cm-2 .The detection limit of chromium was (DL) 0.0012 μg.mL-1 and a relative standard deviation of (0.70 -1.86)% depended on the concentration level.
The method is developed for the determination of chromium(III) and has been successfully applied to the determination of chromium in various water samples, Pharmaceutical preparations ,standard rock sample of (MRG-1).
American Psychological Association (APA)
Shaykhu, Najih Hasan& Mahmud, Hind Ahmad. 2016. Spectrophotometric determination of chromium using indigo carmine : application in various samples. Baghdad Science Journal،Vol. 13, no. 3, pp.556-567.
https://search.emarefa.net/detail/BIM-722429
Modern Language Association (MLA)
Shaykhu, Najih Hasan& Mahmud, Hind Ahmad. Spectrophotometric determination of chromium using indigo carmine : application in various samples. Baghdad Science Journal Vol. 13, no. 3 (2016), pp.556-567.
https://search.emarefa.net/detail/BIM-722429
American Medical Association (AMA)
Shaykhu, Najih Hasan& Mahmud, Hind Ahmad. Spectrophotometric determination of chromium using indigo carmine : application in various samples. Baghdad Science Journal. 2016. Vol. 13, no. 3, pp.556-567.
https://search.emarefa.net/detail/BIM-722429
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 564-567
Record ID
BIM-722429