Trace Uranium Assay Using Infrared Photo Diode Electrodes

Autor:	Suw Young Ly, Myoung Ho Shin, Seong-Ryul Kim, Young Sam Jung, Sung Hoon Choa, Hai-Soo Yoo, Hong Joong Shin, Jin Bum Choi
Rok vydání:	2010
Předmět:	Detection limit Biochemistry (medical) Clinical Biochemistry Analytical chemistry chemistry.chemical_element Square wave Electrolyte Uranium Biochemistry Analytical Chemistry Working range chemistry Electrode Cathodic stripping voltammetry Electrochemistry Voltammetry Spectroscopy
Zdroj:	Analytical Letters. 43:1471-1480
ISSN:	1532-236X 0003-2719
Popis:	A voltammetric assay of uranium using an infrared photo diode electrode (DE) was conducted. A square wave stripping cathodic peak appeared at − 0.2 V (vs. Ag/AgCl/KCl) attributed to the reduction of uranium ion. Under optimum analytical conditions, various conventional working electrodes were compared. The analytical working range was found to be 0.1–1.1 mg/L DE, precision range of R2 = 0.9581, and the high range was obtained at 5-130 mg/L with precision R2 = 0.9981. Here, an ammonium phosphate electrolyte pH strength of 2.3, an accumulation time of 0 sec, and an accumulation potential of 0.5 V were used. Under these conditions, the relative standard deviation of 0.5 mg/L was 1.69%. The detection limit was found to be 0.35 ugL−1 (1.49 × 10−9 M) (S/N = 3). The methods developed in this study are applicable in micro-array multi-sensor systems or other analytical instrumental systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::62d2a604043eb5c7fc1959fc1755c4a1 https://doi.org/10.1080/00032710903502157 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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