CMC的电化学研究

INVESTIGATI0N 0N EIECTR0CHEMICALBEHAVI0UR 0F CMC

本文采用单扫描示波极谱法、线性扫描循环伏安法及卷积循环伏安法等技术,研究了CMC在1mol/LKCl底液中的电化学行为。初步判断电极反应为准可逆扩散过程,反应物有弱吸附;n_α=2,α=0.39,E_p=-1.80v。单扫描示波极谱法测定CMC的检测限可达5μg/ml,线性范围为10～1000μg/ml,常见无机离子不干扰,可用于分析测定。

As a kind of surfactant, Carboxymethylcellulose sodium (CMC) plays an important role in many fields. However, its microanalytical method and electro- chemical behaviour have not been reported so far. By means of single sweep derivative ocillo-polarography (SSDOP), linear sweep voltammetry (LSV), cyclic convolution voltammetry (CCV) and other techniques, the electrochemical behaviour of CMC was studied in detail. It was proved that SSDOP can be used for microanalysis of CMC.