Direct determination of ultratrace copper and iron in lead and zinc metal by inductively coupled plasma atomic emission spectrometry using the graphic cup direct insertion technique

1992 ◽  
Vol 64 (3) ◽  
pp. 257-260 ◽  
Author(s):  
Masao. Umemoto ◽  
Koji. Hayashi ◽  
Hiroki. Haraguchi
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