Determination of Trace Cobalt(II) in Water Sample by High Sensitivity Catalytical Kinetic Spectrophotometric Method

Author

Han, Yanyan ; Shen, Jiangshan ; Wu, Dan ; Zhao, Yanfang ; Cai, Yanyan ; Wei, Qin

Author_Institution

Coll. of Chem. & Chem. Eng., Univ. of Jinan, Jinan, China

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

4

Abstract

A new catalytic kinetic spectrophotometric method for the determination of trace amount of cobalt(II) in microemulsion medium has been developed. This method is based on the catalytic effect of cobalt(II) on the hydrogen peroxide(H₂O₂) oxidation of hydroxyphenyl fluorone (DBH-PF) in the presence of cetyltrimethylammonium bromide (CTMAB) microemulsion medium and NaOH medium. All the variables were studied in order to optimize the reaction conditions. Beer´s law is obeyed over the range of 0 ~ 0.12 ng/mL and the detection limit is 4.86times10^-13 g/mL. The method has been successfully applied in determination of Co(II) in water sample with satisfactory results.

Keywords

catalysis; cobalt; health and safety; hydrogen compounds; microemulsions; organic compounds; oxidation; spectrochemical analysis; spectrophotometry; water; Beer law; Co; H₂O; H₂O₂; cetyltrimethylammonium bromide; high sensitivity catalytical kinetic spectrophotometric method; hydrogen peroxide; hydroxyphenyl fluorone; microemulsion; oxidation; trace cobalt(II); water; Chemical engineering; Chemistry; Cobalt; Educational institutions; Glass; Hydrogen; Kinetic theory; Oxidation; Spectroscopy; Surface tension;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2901-1

Electronic_ISBN

978-1-4244-2902-8

Type

conf

DOI

10.1109/ICBBE.2009.5162630

Filename

5162630