摘要
在ｐＨ４．１醋酸盐缓冲溶液及１００℃加热条件下，痕量铜（Ⅱ）对结晶紫（ＣＶ）（Ｅｐ＝－０．６５Ｖ）氧化次亚磷酸钠的缓慢反应有很强的催化作用，采用固定时间法借自来水冷却中止反应，拟定了测定铜的催化反应－伏安法，线性范围为３～６０ｎｇ／ｍＬＣｕ，检出限为１ｎｇ／ｍＬＣｕ，方法应用于植壮素中铜的分析，获得较好结果．
Experiments show that Cu(Ⅱ) has very strong catalytic effect on the reaction between PO 3- 2 and crystal violet(CV) in pH 4.1 acetate buffer solution at 100℃. Crystal violet exhibits a sensitive 2.5 order differential polarographic wave at -0.65V. A calibration graph from 3 to 60ng/mL Cu was obtained by the fixed reaction time procedure. Copper in real samples has been analysed with good results.
出处
《分析科学学报》
CAS
CSCD
1997年第3期234-236,共3页
Journal of Analytical Science
基金
广西自然科学基金
关键词
铜
结晶紫
染料
催化
伏安法
植壮素
极谱
Copper, Crystal violet, Catalytic reaction voltammetry, Plant strong hormone
