CAJ | 학술논문

本文利用循环伏安法(CV)研究了聚酸性铬兰K薄膜修饰电极(PACBKE)的制备方法,讨论了缓冲体系及支持电解质的种类、浓度、扫描速率等因素对电极制备的影响.研究了神经递质多巴胺在PACBKE上的电化学行为,建立了测定多巴胺(DA)的新方法. DA浓度在5.3×10-6～5.3×10-4 mol/L范围内与氧化峰电流呈良好线性关系,线性回归方程和线性相关系数分别为：i p (μA)=2.78×104C(mol/L)+1.17, r=0.9994,检出限可达3.2×10-7 mol/L.利用该法对样品进行定量分析,样品回收率范围为95.6%～103.3%,8次平行分析结果的相对标准偏差为1.9%,满足微量分析的要求.
본문이용순배복안법(CV)연구료취산성락란K박막수식전겁(PACBKE)적제비방법,토론료완충체계급지지전해질적충류、농도、소묘속솔등인소대전겁제비적영향.연구료신경체질다파알재PACBKE상적전화학행위,건립료측정다파알(DA)적신방법. DA농도재5.3×10-6～5.3×10-4 mol/L범위내여양화봉전류정량호선성관계,선성회귀방정화선성상관계수분별위：i p (μA)=2.78×104C(mol/L)+1.17, r=0.9994,검출한가체3.2×10-7 mol/L.이용해법대양품진행정량분석,양품회수솔범위위95.6%～103.3%,8차평행분석결과적상대표준편차위1.9%,만족미량분석적요구.
This paper studied the Preparation of Poly(Acid Chrome Blue K)Film Modified Electrode (PACBKE)by using cyclic voltammetric method. The voltammetric behavior of dopamine and cyclic voltammetric determination of dopamine has been studied at the PACBKE. The peak current was proportional to the concentration of dopamine in the range of 5.3 × 10-6~5.3 × 10-4 mol/L with a detection limit of 3.2 × 10-7 mol/L. The linear regress equation was ip (μA)=2.78×104C(mol/L)+1.17, and the linear correlation coffcient was 0.999 4. The recycling rate is from 95.6% to 103.3%. It has been successfully applied to the quantitative analysis of dopamine in real samples, the relative standard deviation of eight samples analysis results was less than 1.9%.