Magnetic dispersive solid-phase extraction based on graphene oxide/Fe3 O4 @polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

2018 ◽  
Vol 98 (9) ◽  
pp. 3571-3579 ◽  
Author(s):  
Azar Babaei ◽  
Mohsen Zeeb ◽  
Ali Es-haghi
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