Determination of ultra trace amounts of cobalt and nickel in water samples by inductively coupled plasma-optical emission spectrometry after preconcentration on modified C18-silica extraction disks

2006 ◽  
Vol 84 (1-2) ◽  
pp. 75-79 ◽  
Author(s):  
Afshin Rajabi Khorrami ◽  
Tahereh Hashempur ◽  
Ali Mahmoudi ◽  
Ali Reza Karimi
2007 ◽  
Vol 4 (3) ◽  
pp. 381-384
Author(s):  
J. Dilip Kumar ◽  
P. Reddy Prasad ◽  
B. Krishna Priya ◽  
P. Subrahmanyam S. Ramanaiah ◽  
P. Chiranjeevi

A procedure was developed for the determination of Sm, Eu and Yb in water samples by inductively coupled plasma-optical emission spectrometry (ICP-OES) after preconcentration on synthesized 5-(4-pyridyl azo)-8-quinolinol supported by Borassus flabellifer inflorescence (BFI). The sorbed element was subsequently eluted with 0.4 M HNO3and the acid eluates were analyzed by ICP-OES. Under the optimal conditions, Sm, Eu and Yb in aqueous samples were concentrated 100-fold. Recoveries were obtained by the proposed method in the range of 98.6 -99.8%. This method was also applied for the analysis of spiked and natural water samples. The results provide strong evidence to support the hypothesis of an adsorption mechanism.


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