Spectrophotometric Method for the Determination of Atmospheric Cr Pollution as a Factor to Accelerated Corrosion
Joint Authors
Homa, Dereje
Washe, Alemayehu P.
Haile, Ermias
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-02
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The effect of Cr(VI) pollution on the corrosion rate of corrugated iron roof samples collected from tanning industry areas was investigated through simulated laboratory exposure and spectrophotometric detection of Cr(III) deposit as a product of the reaction.
The total level of Cr detected in the samples ranged from 113.892 ± 0.17 ppm to 53.05 ± 0.243 ppm and showed increasing trend as sampling sites get closer to the tannery and in the direction of tannery effluent stream.
The laboratory exposure of a newly manufactured material to a simulated condition showed a relatively faster corrosion rate in the presence of Cr(VI) with concomitant deposition of Cr(III) under pH control.
A significant (P = 0.05) increase in the corrosion rate was also recorded when exposing scratched or stress cracked samples.
A coupled redox process where Cr(VI) is reduced to a stable, immobile, and insoluble Cr(III) accompanying corrosion of the iron is proposed as a possible mechanism leading to the elevated deposition of the latter on the materials.
In conclusion, the increased deposits of Cr detected in the corrugated iron roof samples collected from tanning industry zones suggested possible atmospheric Cr pollution as a factor to the accelerated corrosion of the materials.
American Psychological Association (APA)
Homa, Dereje& Haile, Ermias& Washe, Alemayehu P.. 2017. Spectrophotometric Method for the Determination of Atmospheric Cr Pollution as a Factor to Accelerated Corrosion. Journal of Analytical Methods in Chemistry،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1170284
Modern Language Association (MLA)
Homa, Dereje…[et al.]. Spectrophotometric Method for the Determination of Atmospheric Cr Pollution as a Factor to Accelerated Corrosion. Journal of Analytical Methods in Chemistry No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1170284
American Medical Association (AMA)
Homa, Dereje& Haile, Ermias& Washe, Alemayehu P.. Spectrophotometric Method for the Determination of Atmospheric Cr Pollution as a Factor to Accelerated Corrosion. Journal of Analytical Methods in Chemistry. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1170284
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1170284