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Title: Simultaneous determination of bismuth(III) and cobalt(II) with methylethylene-diaminetetraacetic acid by using zerocrossing method applied to derivative spectrophotometry
Authors: Seco-Lago, H M
Perez-Iglesias, J
Fernandez-Solis, J M
Castro-Romero, J M
Gonzalez-Rodriguez, V
Issue Date: Oct-1999
Publisher: NISCAIR-CSIR, India
Abstract: The simultaneous determination of bismuth(III) and cobalt(II) with  methylethylenediaminetetraacetic acid by the zero-crossing method is described. The method is suitable for analysing 0.04-0.20 mg ml-1 of bismuth(III) and 0.06- 0.24 mg ml-1 of cobalt(II) in the pH range 4.0-9.0. The two analytes are stable up to 100°C for at least 24 h. The method has been applied to different aqueous matrices and the results are in good agreement with those obtained by AAS (typical deviations ~ 0.003-0.004).
Page(s): 1073-1075
Appears in Collections:IJC-A Vol.38A(10) [October 1999]

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