摘要
本文报道了以Hg2+为滴定剂,涂丝Ag Ag2S电极指示,电位滴定法测定复杂体系中半胱氨酸和胱氨酸的新方法。滴定终点突跃明显,检测下限1mg/L,回收率97%～99%。方法简便、快捷、灵敏。
In this paper,a potentiometric titration method is used to determine Cysteine and Cystine in leather depilating waste water and biological sample by using a coated wire Ag-Ag_2S electrode as indicative electrode.The exchange resin, has been used to eliminate the serious interference of S_2O^(2-)_3. The detection limits for CySH and CySSCy are 1 mg/L and 2 mg/L, respectively and the recovery is 97%～99%. This method is simple, rapid, sensitive and accurate.
出处
《分析科学学报》
CAS
CSCD
北大核心
2004年第6期622-624,共3页
Journal of Analytical Science
