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- W2364743898 abstract "Objective To explore the best experimental conditions for an ultrasonic extracting zinc,iron,copper and manganese and obtain a convenient and quick extraction of metallic elements in tea.Methods The zinc,iron,copper and manganese in tea were extracted by ultrasonic extraction methods and wet digestion respectively,and determined by Flame Atomic Absorption Spectrophotometry.The effects of several key operational parameters including the concentration of HCl,ultrasonic time and ultrasonic temperature in the ultrasonic extraction method were optimized.Results There are good coherence between two pretreatments,the RSD of determination results were below 10%,and the recoveries between 90%~105%.Conclusion The ultrasonic extraction method has some merits,such as use of diluent acid,low temperature and fast operation,which means a good alternative to conventional pretreatments for extraction of metallic elements in tea." @default.
- W2364743898 created "2016-06-24" @default.
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- W2364743898 date "2010-01-01" @default.
- W2364743898 modified "2023-09-24" @default.
- W2364743898 title "The ultrasonic extraction technology for the determination of zinc,iron,copper and manganese in tea" @default.
- W2364743898 hasPublicationYear "2010" @default.
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