摘要
目的：建立了改良的5-Br-PADAP光度法测定水中铜离子含量。方法为在表面活性剂存在下，用2-（5-溴-2-吡啶偶氮）-5-二乙氨基酚（5-Br-PADAP）为显色剂测定水中铜离子含量。结果该法线性范围0~0.24 mg/L，平均回收率为99.9%，批内变异系数（ CV）和批间变异系数分别为1.08%~2.62%和4.23%~4.57%，与原子吸收分光光度法比较具有良好的相关性，线性回归方程和相关系数分别为y=0.9834 x＋0.0021，r=0.9991。结论用改良的5-Br-PADAP光度法测定水中铜离子浓度方法简便、灵敏可靠，适合推广应用。
Objective To estab1ish a proved spectrophotometric method for the ana1ysis of cooper in water. Methods The cooper in water was determined by the method suing 5 - Br - PADAP as a chromogenic agent in the presence of surfactant. Results The method was 1iner in the range of 0~0. 24 mg/L,the average rate of recovery was 99. 9%, the withinrun and between run CV was 1. 08% ~2. 62% and 4. 23% ~4. 57%,respective1y. Comparing this method（ y） with the reference method （x）,we obtained the regression equation：y=0. 983 4 x＋0. 002 1,r=0. 999 1. Conclusion This method is simp1e,sensitive and suitab1e for app1ication.
出处
《广东微量元素科学》
CAS
2015年第3期11-14,共4页
Trace Elements Science
基金
温州医科大学本专科学生科研课题(2014041)
