Spectrophotometric determination of vanadium (V) using an organic reagent [4-(6-nitro -2 benzothiazolylazo)pyrogallol]
Author
Source
Mesopotamia Environment Journal
Issue
Vol. 4, Issue 1 (31 Dec. 2017), pp.42-51, 10 p.
Publisher
University of Babylon Environmental Research and Studies Center
Publication Date
2017-12-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Abstract EN
A new chromogenic reagent [ 4-(6-Nitro-2-benzothiazolylazo)pyrogallol] (6-NO2BTAPY), was synthesized by diazo coupling of(2-amino-6-nitro benzothiazol) (2-ANO2BT) with pyrogallol, and used for the spectrophotometric determination of vanadium (V).This method was simple, sensitive, selective and rapid for reaction between V5+ and (6-NO2BTAPY),to form a pink complex having a molar ratio of (1:2) (V-6-NO2BTAPY) at pH 6.0.
The molar absorptivity of the complex was 0.2279×104 L.mol-1 cm-1 at max 490 nm.
Beer’s law is obeyed in the range of (0.1–10) ppm of vanadium ,and the stability constant was found to be 3.4 × 108 L2.mol-2.
The relative standard deviation for seventh replicate measurements ,recovery ,and relative error values of this method were found to be 2.5712,10.3, and3 respectively .
The interference of foreign ions was also investigated.
All the other ions studied did not interfere with vanadium determination except for Cr3+ , Cu2+,Co2+,Ni2+, Zn2+ , and pb2+.
The interferences were eliminated approximately using suitable masking agent
American Psychological Association (APA)
Khudayr, Zaynab H.. 2017. Spectrophotometric determination of vanadium (V) using an organic reagent [4-(6-nitro -2 benzothiazolylazo)pyrogallol]. Mesopotamia Environment Journal،Vol. 4, no. 1, pp.42-51.
https://search.emarefa.net/detail/BIM-903256
Modern Language Association (MLA)
Khudayr, Zaynab H.. Spectrophotometric determination of vanadium (V) using an organic reagent [4-(6-nitro -2 benzothiazolylazo)pyrogallol]. Mesopotamia Environment Journal Vol. 4, no. 1 (Dec. 2017), pp.42-51.
https://search.emarefa.net/detail/BIM-903256
American Medical Association (AMA)
Khudayr, Zaynab H.. Spectrophotometric determination of vanadium (V) using an organic reagent [4-(6-nitro -2 benzothiazolylazo)pyrogallol]. Mesopotamia Environment Journal. 2017. Vol. 4, no. 1, pp.42-51.
https://search.emarefa.net/detail/BIM-903256
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 50-51
Record ID
BIM-903256