碳糊电极线性扫描伏安法测定α-甲基多巴

• 作 者: 杨功俊 王胤 杨晨 胡效亚 冷宗周
• 机 构: 扬州大学理学院化学化工系!扬州225002,扬州大学理学院化学化工系!扬州225002,扬州大学理学院化学化工系!扬州225002,扬州大学理学院化学化工系!扬州225002,扬州大学理学院化学化工系
• 出 处: 应用化学
• 发表日期: 2000年04期
• 关键词: 多巴 α-甲基多巴 碳糊电极 峰电流 线性扫描伏安法 非水溶液滴定法 氧化峰电位 盐酸普鲁卡因 三电极体系 还原峰

Methyldopa is determined by linear sweep voltammetry on a carbon paste electrode in 0.1 mol/L H 2SO 4. The peak potential of anode is 0.677 V( vs SCE). A good linear range of α methyldopa is in 5 0×10 -7 ~1 0×10 -4 mol/L. The detection limit is 2 5×10 -7 mol/L. The recovery is 95 0%~103 7% and RSD is 2 8%( n =12 ). The electrode reaction of α methyldopa is an irreversible process with two electrons and two protons on the carbon paste electrode.

Methyldopa was determined by linear sweep voltammetry on a carbon paste electrode in 0.1 mol / LH 2 SO 4. The peak potential of the anode was 0.677 V (vs SCE). A good linear range of α methyldopa is in 5 × 10 -7 ~ 1 0 × 10 -4 mol / L The detection limit is 2 × 10 -7 mol / L The recovery is 95 0% -103 7% and RSD is 2 8% (n = 12). The electrode reaction of α methyldopa is an irreversible process with two electrons and two protons on the carbon paste electrode.