枇杷花茶中微量元素的溶出特性研究

doi:10.6040/j.issn.1671-9352.0.2013.632

Abstract

Abstract: The contents of Ca,Fe,Mn, Mg,Zn,Cu, and Ni in loquat scented tea were determined by microwave slaking and flame atomic absorption spectrometry (FAAS) in this study. And the extracting characteristic of these trace elements in different soaking time and times were analyzed. The results show that the contents of trace element in descending order Ca>Fe>Mn>Mg>Zn>Ni>Cu, compared with Mn and Fe, the Ca and Mg can be extracted easily from loquat scented tea. The infusing amount of trace elements in different soaking time could be described with logarithmic relation and times could be described with negative exponential relation. The method of FAAS to determine the contents of Ca, Fe etal is simple, accuracy and sensitive, and suitable for routine analysis. The optimum conditions of loquat scented tea for soaking were obtained with soaking time 30 min and soaking for 3 times.

Key words: extracting characteristic, flame atomic absorption spectrometry, loquat scented tea, trace element

CLC Number:

O657

LI Chun-rong, MENG Tie-hong. Study on extracting characteristics of trace element in loquat scented tea[J].JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE), 2014, 49(07): 7-11.

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