عنوان	Ultrasensitive Simultaneous Quantification of Nanomolar Level of Cd and Zn by Cathodic Adsorptive Stripping Voltammetry in Some Real Samples
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Simultaneous determination, Adsorptive stripping voltammetry, N-Nitrozo-N-phenylhydroxylamine, Real sample analysis, Nanomolar level
چکیده	A novel, simple and sensitive adsorptive stripping voltammetry method was developed for simultaneous determination of Cd and Zn using N-Nitrozo-N-phenylhydroxylamine (Cupferron) as a selective complexing agent. Cadmium and zinc metals gave peaks that were distinctly separated by 450–1200 mV, allowing their determination over a wide range of concentrations. The influence of pH and the nature of supporting electrolytes, concentration of ligand, preconcentration time and applied potential were investigated. The detection limits were 0.058 ng/mL for Zn and 0.092 ng/mL for Cd, and the RSD at a concentration level of 50 ppb, were 1.8–2.1% for both zinc and cadmium, respectively. The method was applied to the determination of cadmium and zinc in blood, drug, food and water samples with the satisfactory results.
پژوهشگران	شهریار عباسی (نفر اول)، عباس فرمانی (نفر دوم)، سیده شیما مرتضوی (نفر سوم)