Nafion-Tetren-Glycerol이 수식된 유리탄소전극에서 납(II) 이온의 정량

• 영문명: Determination of Lead(II) at Nation-Coated Glassy Carbon Electrodes Modified by Tetren-Glycerol
• 발행기관: 한국환경보건학회
• 저자명: 반옥기(Ok Gie Ban) 박은희(Eun Heui Park) 정근호(Keun Ho Chung)
• 간행물 정보: 『1. 한국환경보건학회지』제29권 제2호, 62~68쪽, 전체 7쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2003.06.30

영문 초록

Differential pulse voltammetry (DPV) using nafion-coated glassy carbon electrodes modified with Tetren(tetraethylene pentamine)-glycerol showed sensitivity for determining lead (II) at low concentration. The Lead (II) was accumulated on the electrode surface by the formation of the complex in an open circuit, and the resulting surface was characterized by medium exchange, electrochemical reduction, and differential pulse voltammetry. Various experimental parameters, such as the composition of modifier, preconcentration time, pH of electrolyte (0.1 M acetate buffer), and parameters of differential pulse voltammetry, were optimized. The initial potential was applied for 50 s, the electrode was scanned from -0.9 to -0.3 V, and the anodic peak current was measured at -0.604 V ± 0.015 V (vs. Ag/AgCl). The calibration plot was obtained in the range 1.0×10−8 M~l.0×10−6 M with pH 4.5 buffer solution. The detection limit (3σ) it as low as 5.0× 10−9 M. This method is applied to the determination of lead(II) in a certified reference material and the result agrees satisfactorily with the certified value.

목차

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과 및 고찰

Ⅳ. 결 론

참고문헌

키워드

Lead(II) Nafion Tetren Glycerol