CAJ | 학술논문

在玻碳电极上采用电化学沉积法制备了新型铕离子掺杂普鲁士蓝复合铋膜电极, 建立了用示差脉冲阳极溶出法测定环境水样中痕量铟的分析方法. 讨论了铟在常规铋膜电极和复合铋膜电极上的溶出性能, 对铋膜的厚度、支持电解质、测定底液的pH、富集时间和富集电位等参数进行了优化. 在最佳实验条件下, 铟的阳极溶出峰电流与其浓度在2～20 μg/L和20～100 μg/L范围内分别呈良好的线性关系, 检测下限为0.15 μg/L (S/N=3), 相对标准偏差RSD＜2.0%. 该法用于实际水样中痕量铟的测定, 样品回收率为97.5%～103%.
재파탄전겁상채용전화학침적법제비료신형유리자참잡보로사람복합필막전겁, 건립료용시차맥충양겁용출법측정배경수양중흔량인적분석방법. 토론료인재상규필막전겁화복합필막전겁상적용출성능, 대필막적후도、지지전해질、측정저액적pH、부집시간화부집전위등삼수진행료우화. 재최가실험조건하, 인적양겁용출봉전류여기농도재2～20 μg/L화20～100 μg/L범위내분별정량호적선성관계, 검측하한위0.15 μg/L (S/N=3), 상대표준편차RSD＜2.0%. 해법용우실제수양중흔량인적측정, 양품회수솔위97.5%～103%.
A novel composite bismuth film electrode (GC/Eu-PB/BFE) was prepared by electrodepositing bismuth film on the glassy carbon matrix which was modified with europium-doped Prussian blue analogue (Eu-PB). In addition, trace levels of indium was determined by anodic stripping voltammetry using the GC/Eu-PB/BFE as a working electrode. The comparison of stripping properties of In~3+ between the common bismuth and the composite bismuth had been studied. Some of effect factors such as the thickness of bismuth film, supporting electrolyte, pH of determining solution, deposition time and deposition potential were optimized. Under the optimum conditions, good linearity was obtained in the concentration range of 2～20 μg/L and 20～100 μg/L, respectively. The limit of detection was 0.15 μg/L and relative standard deviation was under 2.0%. The method had been applied to the determination of indium ion in environmental water samples with the recoveries of 97.5%～103%.