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[Simultaneous spectrophotometric determination of trace ferrum and cobalt with 5-Br-PADAP and Tween-80].

作者信息

Jia C, Hai M

机构信息

Department of Chemistry, Inner Mongolia Normal University, 010022 Hohhot.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2000 Oct;20(5):747-8.

PMID:12945441
Abstract

A new simultaneous method for the determination of ferrum and cobalt with 5-Br-PADAP by spectrophotometry in the presence of Twen-80 is studied. The results showed that in pH = 3.4 HAc-NaAc buffer medium, ferrum and cobalt can formed colored complexes with 5-Br-PADAP. Its maximum absorption wavelengths are at 585 nm. Beer's law is obeyed for the concentration of ferrum in the range of 0-10 micrograms.25 mL-1 and 0-12 micrograms.25 mL-1 of cobalt. The apparent molar absorptivities are epsilon 585Fe = 7.18 x 10(4) and epsilon 585Co = 9.27 x 10(4) respectively. This method has been applied to the determination of ferrum and cobalt in water sample with satisfactory results.

摘要

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