کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1172160 | 960749 | 2006 | 6 صفحه PDF | دانلود رایگان |

A sensitive and selective method for the simultaneous determination of copper and bismuth by adsorptive stripping was developed using nuclear fast red (2-anthracenesulfonic acid, 4-amino-9,10-dihydro-1,3-dihydroxy-9,10-dioxo-, monosodium salt) as selective complexing agent onto hanging mercury drop electrode. In a single scan both metals gave peaks that were distinctly separated by 85 mV allowing their determination in the presence of each other. Optimal analytical conditions were found to be: nuclear fast red concentration of 80 μM, pH of 2.8 and adsorptive potential of −300 mV versus Ag/AgCl. With accumulation time of 180 s the peaks currents are proportional to concentration of copper and bismuth over the 1–100 and 5–60 ng mL−1 range with detection limits of 0.2 and 1.2 ng mL−1, respectively. The procedure was applied to simultaneous determination of copper and bismuth in some real samples.
Journal: Analytica Chimica Acta - Volume 571, Issue 1, 30 June 2006, Pages 99–104