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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

MULTI-WAVELENGTH DETERMINATION OF COBALT BY TUNGSTEN COIL ATOMIC EMISSION SPECTROMETRY

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Author(s):
Donati, George L. [1] ; Gonzales, Mario H. [2] ; Nobrega, Joaquim A. [2] ; Jones, Bradley T. [1]
Total Authors: 4
Affiliation:
[1] Wake Forest Univ, Dept Chem, Winston Salem, NC 27109 - USA
[2] Univ Fed Sao Carlos, Dept Chem, BR-13560 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Analytical Letters; v. 43, n. 10-11, p. 1723-1733, 2010.
Web of Science Citations: 10
Abstract

A simple tungsten coil atomic emission device is used for the determination of Co in a polluted water sample. Multiple cobalt emission lines in the 340.5 to 352.7 nm range are detected simultaneously. Limits of detection at five different wavelengths ranged between 20 and 70 ng Co in a 25 mu L sample volume. Summing the signals for the five different Co emission lines improves the detection limit to 10 ng. The combination of the five lines also results in improved precision (2.2% relative standard deviation for a 4 mg/L Co solution) and accuracy (102% for a polluted water reference material). (AU)