caa a22 4500 463218841 CHVBK 20180405153206.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1134/S1061934807060172 doi (NATIONALLICENCE)springer-10.1134/S1061934807060172 Differential pulse polarographic determination of Co(II) using moxifloxacine [Elektronische Daten] [R. İnam, H. Mercan, E. Yılmaz, B. Uslu] The polarographic reduction of Co(II) in the presence of moxifloxacin (1-cyclopropyl-7-[(S,S)-2.8-diazabicyclo[4.3.0]non-8-yl]-6-fluoro-8-methoxy-1.4-dihydro-4-oxo-3-quinolinecarboxylic acid) gives rise to an additional adsorption peak corresponding to the reduction of Co(II)-moxifloxacin complex on the mercury drop electrode at −1.17 V. This new peak is applicable to Co(II) determination with the linearity proportional to the Co(II) concentration in the range of 4.93 × 10−7−6.90 × 10−5 M and can be attributed to an adsorption-controlled process with an irreversible reduction. Without using moxifloxacin, the polarographic determination of 2.50 × 10−6 M Co(II) is impossible under the given conditions due to very poor sensitivity at −1.38 V. The proposed method showed good precision and accuracy with a relative standard deviation of 3.01% and relative error of +6.40% for the determination of 2.50 × 10−6 M Co(II) next to 5.0 × 10−6 M of Zn(II), Ni(II), and Cd(II). The accuracy of the method was also checked by the determination of Co(II) spiked with tap water and certified sea water, and the percentage recoveries were 97.5 and 96.7%, respectively (n = 4 at 95% confidence interval). Pleiades Publishing, Ltd., 2007 differential pulse polarography nationallicence Co(II) determination nationallicence moxifloxacin nationallicence İnam R. Faculty of Arts and Sciences, Department of Chemistry, Gazi University, 06500, Ankara, Turkey aut Mercan H. Faculty of Arts and Sciences, Department of Chemistry, Gazi University, 06500, Ankara, Turkey aut Yılmaz E. Faculty of Arts and Sciences, Department of Chemistry, Gazi University, 06500, Ankara, Turkey aut Uslu B. Faculty of Pharmacy, Department of Analytical Chemistry, Ankara University, 06100, Tandogan, Ankara, Turkey aut Journal of Analytical Chemistry Nauka/Interperiodica 62/6(2007-06-01), 592-598 1061-9348 62:6<592 2007 62 10809 https://doi.org/10.1134/S1061934807060172 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807060172 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- İnam R. Faculty of Arts and Sciences, Department of Chemistry, Gazi University, 06500, Ankara, Turkey aut NATIONALLICENCE 700 1- Mercan H. Faculty of Arts and Sciences, Department of Chemistry, Gazi University, 06500, Ankara, Turkey aut NATIONALLICENCE 700 1- Yılmaz E. Faculty of Arts and Sciences, Department of Chemistry, Gazi University, 06500, Ankara, Turkey aut NATIONALLICENCE 700 1- Uslu B. Faculty of Pharmacy, Department of Analytical Chemistry, Ankara University, 06100, Tandogan, Ankara, Turkey aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/6(2007-06-01), 592-598 1061-9348 62:6<592 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer