Highly Selective and Sensitive Spectrophotometric Determination of Trace Amounts of Silver Ion in Surfactant Media Using 2‐Mercaptobenzoxazole

Abstract

A simple and accurate spectrophotometric method for determination of trace amounts of silver ion in tap and wastewater solution and photographic solutions has been described. The spectrophotometric determination of silver ion using 2-mercaptobenzoxazole (MBO) in the presence of Triton X-100 as nonionic surfactant has been carried out. The Beer's law is obeyed over the concentration range of 0.1-9.0 microg mL(-1) of Ag+ ion with the detection limits of 1.6 ng mL(-1). The influence of type and amount of surfactant, pH, complexation time and amount of ligand on sensitivity of method were optimized. Finally the repeatability, accuracy and the effect of interfering ions on the determination of silver ion were evaluated. There is a good agreement between results of proposed method and atomic absorption spectrometry.

New Spectrophotometric Method for the Determination of Trace Level of Silver Using 2,2'-Di(2,3,4-Trihydroxyphenilazo)biphenyl

“…The method described here has recorded for the first time the non-extractive direct spectrophotometric determination of silver(I) in aqueous media without the recourse of any clean-up step. This method is far more selective, sensitive, non-extractive, simple and rapid than all of the existing spectrophotometric methods [9][10][11][12].…”

A simple dispersive liquid–liquid microextraction method for determination of Ag(I) by flame atomic absorption spectrometry

“…28 The most widely used techniques for Ag(I) determination in 29 various samples are electrochemical techniques [10][11][12][13][14], several 30 spectrometric techniques, such as atomic absorption spectrometry 31 (FAAS) [6,9,[15][16][17][18][19][20][21][22][23], electrothermal atomic absorption spectrome-32 try (ET-AAS) [24][25][26][27][28], inductively coupled plasma optical emission 33 spectrometry (ICP-OES) [29], and spectrophotometric techniques 34 [30][31][32][33]. 35 Despite of substantial technological advances in analytical field, 36 most of instruments are not measure directly handle complex 37 sample matrixes yet.…”

Cloud point extraction-preconcentration and flame atomic absorption spectrometric determination of low levels of zinc in water and blood serum samples

“…Thus, there is a growing tendency to use micelles in trace analysis of organic [14][15][16][17] and inorganic materials [18][19][20][21][22][23][24][25][26][27][28][29][30][31]. However, despite the critical importance of Zn 2+ monitoring in many industrial, environmental, clinical and pharmaceutical samples, only a few cases of use of CPE for the separation and preconcentration of zinc has been reported in the literature [32][33][34][35].…”