1.School of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China; 2. Ethylene Chemical Plant of CNPC Fushun Petrochemical Company,Fushun 113000,China
Abstract：The tartaric acid intercalated hydrotalcite (TA-HT) was dispersed in chitosan (CS) solution to prepare a new type of film modified electrode. X- Ray diffractometer (XRD),infrared absorption spectrometer (IR) were employed for characterization of tartaric acid intercalated hydrotalcite,cyclic voltammetry (CV) was used for the electrochemical characterization of the modified electrode,and linear sweep stripping voltammetry (LSSV) was adopted to investigate the electrochemical behavior of Pb2+ on the modified electrode. Compared with the bare electrode,the modified electrode achieved an increased electrochemical activity. Pb2+ in the concentration range of 5 - 180 μg/L constituted a fine linear relation with its peak current,with a correlation coefficient of 0.997 and the detection limit of up to 1 μg/L. In determination of 0.1 mg/L Pb2+,when the relative error was in the ± 5% range,200-fold Na+,K+,F- and NO3-,100-fold Zn2+,Fe3+,Ni2+ and Co2+,10-fold Bi3+ and Ca2+ and 5-fold Cu2+ did not interfere with the determination. The proposed method was applied to the determination of Pb2+ in actual pond water samples and the measured values were consistent with those obtained by atomic absorption spectrometry,with recoveries between 98.0%-102.5%.
张毅，刘东斌，申延明，樊丽辉，李士风，邱丽娟. 酒石酸插层水滑石修饰ITO电极伏安法测定水中铅[J]. 冶金分析, 2013, 33(11): 21-26.
ZHANG Yi,LIU Dong-bin,SHEN Yan-ming,FAN Li-hui,LI Shi-feng,QIU Li-juan. Determination of lead in water by voltammetry with tartaric acid intercalated hydrotalcite-modified ITO electrode. , 2013, 33(11): 21-26.
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