TY - JOUR
T1 - A Flow System for Detection of Cadmium Based on 3D-Printed Thin-Layer Cell and Flow-field Shaped Electrode
AU - HE, Xiao Yun
AU - WANG, Ji Kui
AU - HONG, Yin
AU - LYU, Dan Dan
AU - YANG, Xiao Lu
AU - LIU, Chang
AU - LU, Xiao Hua
AU - CHEN, Guo Song
N1 - Publisher Copyright:
© 2017 Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
PY - 2017/1
Y1 - 2017/1
N2 - The concept of flow-field shaped (FFS) electrode was introduced for the first time and a FFS based three-electrodes system was built accordingly. Combined with a 3D-printed thin-layer flow cell (TLFC), a flow electrochemical system for detection of Cd2+ using square wave stripping voltammetry (SWSV) was thus constructed. Several factors that might affect the determination of Cd2+ were investigated, including the shape of the FFS electrode, the method of measurements, the buffer medium, the flow rate, and the deposition time. The results suggested this new detection system offered high sensitivity, good reproducibility, and great stability. Under the optimized conditions, the system showed a good linearity for detecting Cd2+ in the range of 2–100 μg L−1 with a correlation coefficient of 0.997, and a detection limit of 0.5 μg L−1 was achieved. Furthermore, the newly designed system was used to determine trace Cd2+ in environmental water samples and fermentation broths of biological methane. The results were consistent with that obtained with ICP-AES analysis and the recovery rates were found to be 90%–106%.
AB - The concept of flow-field shaped (FFS) electrode was introduced for the first time and a FFS based three-electrodes system was built accordingly. Combined with a 3D-printed thin-layer flow cell (TLFC), a flow electrochemical system for detection of Cd2+ using square wave stripping voltammetry (SWSV) was thus constructed. Several factors that might affect the determination of Cd2+ were investigated, including the shape of the FFS electrode, the method of measurements, the buffer medium, the flow rate, and the deposition time. The results suggested this new detection system offered high sensitivity, good reproducibility, and great stability. Under the optimized conditions, the system showed a good linearity for detecting Cd2+ in the range of 2–100 μg L−1 with a correlation coefficient of 0.997, and a detection limit of 0.5 μg L−1 was achieved. Furthermore, the newly designed system was used to determine trace Cd2+ in environmental water samples and fermentation broths of biological methane. The results were consistent with that obtained with ICP-AES analysis and the recovery rates were found to be 90%–106%.
KW - 3D-Printedthin-layer cell
KW - Cadmium
KW - Flow electrochemical detection system
KW - Flow-field shaped electrode
UR - http://www.scopus.com/inward/record.url?scp=85044770997&partnerID=8YFLogxK
U2 - 10.1016/S1872-2040(16)60984-2
DO - 10.1016/S1872-2040(16)60984-2
M3 - 文章
AN - SCOPUS:85044770997
SN - 0253-3820
VL - 45
SP - 7
EP - 13
JO - Chinese Journal of Analytical Chemistry
JF - Chinese Journal of Analytical Chemistry
IS - 1
ER -