Solid-phase extraction of Zn(II), Cu(II), Ni(II) and Pb(II) on poly(vinyl chloride) modified with 3-ferrocenyl-3-hydroxydithioacrylic acid, and their subsequent determination by electrothermal atomic absorption spectrometry

2007 ◽  
Vol 160 (1-2) ◽  
pp. 211-218 ◽  
Author(s):  
Jackson K. Kiptoo ◽  
J. Catherine Ngila ◽  
Ned D. Silavwe
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