Determination of (ultra)trace amounts of lead in biological materials by on-line coupling flow injection microcolumn separation and preconcentration to electrothermal atomic absorption spectrometry using a macrocycle immobilized silica gel sorbent

1999 ◽  
Vol 14 (10) ◽  
pp. 1625-1629 ◽  
Author(s):  
Xiu-Ping Yan ◽  
Michael Sperling ◽  
Bernhard Welz
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