利用60%季铵化聚(4-乙烯)吡啶固定化酶的电位型尿素酶电极的研制
李文江, 刘潇雅, 孙长青
Preparation of Potentiometric Enzyme Electrode for Urea Based on Enzyme Immobilization by 60% Quaternized Poly(4-vinyl)pyridine
LI Wen-Jiang, LIU Xiao-Ya, SUN Chang-Qing 
高等学校化学学报 . 1998, (5): 711 -713 .