Simultaneous determination of theophylline, theobromine and caffeine in different tea beverages by graphene-oxide based ultrasonic-assisted dispersive micro solid-phase extraction combined with HPLC-UV
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Title
Simultaneous determination of theophylline, theobromine and caffeine in different tea beverages by graphene-oxide based ultrasonic-assisted dispersive micro solid-phase extraction combined with HPLC-UV
Authors
Keywords
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Journal
RSC Advances
Volume 4, Issue 87, Pages 47114-47120
Publisher
Royal Society of Chemistry (RSC)
Online
2014-09-17
DOI
10.1039/c4ra06412g
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