Derivative spectrophotometric determination of copper(II) in non-ionic micellar medium

被引：27

作者：

Agnihotri, NK ^{[1
]}

Singh, VK ^{[1
]}

Singh, HB ^{[1
]}

机构：

[1] UNIV DELHI, DEPT CHEM, DELHI 110007, INDIA

来源：

TALANTA | 1997年 / 45卷 / 02期

关键词：

1-(2-pyridylazo)-2-naphthol; surfactant; micellar medium; trough depth; peak height;

D O I：

10.1016/S0039-9140(97)00137-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A photometric method for trace analysis of Cu(II) with 1-(2-pyridylazo)-2-naphthol (PAN) in presence of a neutral surfactant, Triton X-100, has been reported in normal and derivative modes. The molar absorption coefficient (epsilon) and Sandell's sensitivity (S) of PAN-Cu(II) complex at 555 nm is 5.21 x 10(4) mol(-1) cm(-1) and 1.22 ng cm(-2) respectively. The detection limit of Cu(II) is 4.0 ng ml(-1) and Beer's law is obeyed in the range 0.08-4.00 mu g ml(-1) of the analyte. Copper content of a number of commercially available alcoholic beverages, biological and standard alloy samples is reported. The results obtained are in excellent agreement with those obtained using AAS. (C) 1997 Elsevier Science B.V.

引用

页码：331 / 341

页数：11

共 53 条

[1] HIGH-ORDER DERIVATIVE SPECTROPHOTOMETRIC DETERMINATION OF URANIUM IN A CATIONIC MICELLAR MEDIUM [J].