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)