caa a22 4500 445880864 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-010-0541-8 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0541-8 Differential pulse anodic stripping voltammetric determination of Cd and Pb at a bismuth glassy carbon electrode modified with Nafion, poly(2,5-dimercapto-1,3,4-thiadiazole) and multiwalled carbon nanotubes [Elektronische Daten] [Xiuhui He, Zhaohong Su, Qingji Xie, Chao Chen, Yingchun Fu, Li Chen, Ying Liu, Ming Ma, Le Deng, Dilan Qin, Yueping Luo, Shouzhuo Yao] Differential pulse anodic stripping voltammetry was applied to detect Pb2+ and Cd2+ at a glassy carbon electrode modified with Nafion, poly(2,5-dimercapto-1,3,4-thiadiazole) (PDMcT), and multiwalled carbon nanotubes (MWCNTs). Preconcentration was accomplished at −1.0V vs. SCE in pH 5 buffer containing 400μgL−1 Bi3+ for 6min and resulted in high sensitivity, selectivity and reproducibility. Electrochemical quartz crystal microbalance studies revealed that PDMcT is cleaved under the reductive conditions to form thiol groups that bind Pb2+ and Cd2+ ions, whilst the Nafion binder stabilizes the film and the MWCNTs improve electroactivity. The presence of the bismuth film improves sensitivity and reproducibility. Under optimum conditions, the electrode responds linearly to Cd2+ ions in the concentration range from 0.05 to 20μgL−1, and to Pb2+ from 0.1 to 22μgL−1. The limits of detection (S/N = 3) are 0.03 and 0.05μgL−1, respectively. This method was successfully applied to the determination of the two ions in water samples. Figure Differential pulse anodic stripping voltammetry was applied to detect Cd2+ and Pb2+ at a glassy carbon electrode modified with Nafion, poly(2,5-dimercapto-1,3,4-thiadiazole) (PDMcT), and multiwalled carbon nanotubes (MWCNTs), and limits of detection of 0.03 (Cd2+) and 0.05 (Pb2+) μgL−1 were obtained. Electrochemical quartz crystal microbalance is used for the process studies Springer-Verlag, 2010 Differential pulse anodic stripping voltammetry nationallicence Simultaneous determination of Cd2+ and Pb2+ nationallicence Poly(2,5-dimercapto-1,3,4-thiadiazole) nationallicence Multiwalled carbon nanotubes nationallicence Bismuth film electrode nationallicence He Xiuhui Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Su Zhaohong Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Xie Qingji Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Chen Chao Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Fu Yingchun Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Chen Li Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Liu Ying Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Ma Ming Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Deng Le Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Qin Dilan Environmental Monitoring Center of Hunan Province, 410004, Changsha, China aut Luo Yueping Environmental Monitoring Center of Hunan Province, 410004, Changsha, China aut Yao Shouzhuo Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 95-102 0026-3672 173:1-2<95 2011 173 604 https://doi.org/10.1007/s00604-010-0541-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0541-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- He Xiuhui Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Su Zhaohong Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Xie Qingji Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Chen Chao Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Fu Yingchun Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Chen Li Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Liu Ying Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Ma Ming Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Deng Le Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 700 1- Qin Dilan Environmental Monitoring Center of Hunan Province, 410004, Changsha, China aut NATIONALLICENCE 700 1- Luo Yueping Environmental Monitoring Center of Hunan Province, 410004, Changsha, China aut NATIONALLICENCE 700 1- Yao Shouzhuo Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, 410081, Changsha, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 95-102 0026-3672 173:1-2<95 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer