CAJ | 학술논문

报道了用碳糊电极阳极吸附伏安法测定双酚A的方法.在Na_2HPO_4-NaH_2PO_4(pH 7.0)缓冲液中,双酚A在碳糊电极(CPE)上有一灵敏的吸附氧化峰,峰电位为0.63 V(vs.SCE).该氧化峰的二阶导数峰电流与双酚A的浓度在2.0×10~(-8)～8.0×10~(-8)mol/L(富集90 s)范围内呈良好的线性关系,相关系数为0.9963,检出限为1.0×10~(-6) mol/L(S/N=3,富集110 s),探讨了双酚A在碳糊电极上的伏安性质和电极反应机理,并且成功应用于聚碳酸酯塑料中双酚A含量的测定与其加入回收率实验.
보도료용탄호전겁양겁흡부복안법측정쌍분A적방법.재Na_2HPO_4-NaH_2PO_4(pH 7.0)완충액중,쌍분A재탄호전겁(CPE)상유일령민적흡부양화봉,봉전위위0.63 V(vs.SCE).해양화봉적이계도수봉전류여쌍분A적농도재2.0×10~(-8)～8.0×10~(-8)mol/L(부집90 s)범위내정량호적선성관계,상관계수위0.9963,검출한위1.0×10~(-6) mol/L(S/N=3,부집110 s),탐토료쌍분A재탄호전겁상적복안성질화전겁반응궤리,병차성공응용우취탄산지소료중쌍분A함량적측정여기가입회수솔실험.
A highly selective and rapid anodic adsorptive voltammetric method was developed for the determination of trace amount of bisphenol A(BPA)at a carbon paste electrode(CPE).The BPA was adsorbed on the surface of the CPE in Na_2 HPO_4-NaH_2 PO_4(pH 7.0) yielding one oxidation peak at 0.63 V (vs.SCE).The relationship between the peak current and BPA concentration iS linear in a range of 2.0×10~(-8)～8.0×10~(-6)mol/L with a correlation coefficient of 0.9963.The detection limit iS 1.0×10~(-8) mol/L (SIN=3) for 110 s acummulation.The electrode reaction mechanism of BPA was investigated.The proposed method was applied to direct determination of trace BPA in sample with satisfied results.