Simple photometric determination of free cyanide ion in aqueous solution with 2,6-dichlorophenolindophenol

• Authors: Abdollah Yari , Kazem Kargosha
• Languages of publication: EN

Abstracts

EN

In this work, a simple photometric method with high accuracy and precision for measuring trace amounts of free cyanide ion in aqueous solution is demonstrated. Under the evaluated conditions, we could determine CN− concentration in the range of 5–70 ppm easily. The work is based upon the photometric titration of CN− with Co(II) in the presence of 2,6-dichlorophenolindophenol (DCPIP) at λmax = 602 nm in aqueous solution. The optimal conditions, such as pH, ionic strength, and concentration of chromopher were evaluated. The interence effect of many other cations and anions studied and the results are given here. The optimized titration was successfully used to determine the concentration of free cyanide ion in aqueous solutions.

Keywords

EN

Cyanide; 2,6-dichlorophenolindophenol; spectrophotometry

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2006
• Volume: 4
• Issue: 2
• Pages: 329-337

Dates

published

1 - 6 - 2006

online

1 - 6 - 2006

Contributors

author

Abdollah Yari

• Department of Chemistry, Lorestan University, Khorramabad, Iran

author

Kazem Kargosha

• Iranian Center of Chemical & Chemical Engineering Research, Tehran, Iran

References

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Identifiers

DOI

10.2478/s11532-006-0007-3