L-Cys produces an irreversible oxidation peak at 0.54 V(vs.SCE) in a phosphate buffer(PBS) of pH=7.0.The peak potential is much (lower) than that at a bare GCE.

• 在pH=7.；0的磷酸盐缓冲溶液(PBS)中；L-半胱氨酸在单壁碳纳米管修饰玻碳电极上于0