山东大学学报（理学版）
山東大學學報（理學版）
산동대학학보（이학판）
JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE)
2014年
7期
7-11
,共5页
原子吸收光谱法%枇杷花茶%微量元素%溶出特性
原子吸收光譜法%枇杷花茶%微量元素%溶齣特性
원자흡수광보법%비파화다%미량원소%용출특성
flame atomic absorption spectrometry%loquat scented tea%trace element%extracting characteristic
采用微波消解-火焰原子吸收光谱法测定了枇杷花茶中微量元素钙、铁、锰、镁、锌、镍和铜的含量，并对枇杷花茶进行不同浸泡时间和不同浸泡次数微量元素溶出研究。结果表明，枇杷花茶中微量元素丰富，含量顺序为：钙＞铁＞锰＞镁＞锌＞镍＞铜。溶出特性研究表明，钙和镁最易溶出，而铁和锰较不容易溶出，微量元素的溶出量与浸泡时间呈现良好对数关系，单泡微量元素的溶出量与冲泡次数呈负指数关系。研究表明，采用微波消解-火焰原子吸收光谱法测定枇杷花茶中钙、铁等元素含量方法简便、准确、灵敏，适合常规分析；枇杷花茶最佳饮用条件为浸泡时间30 min，浸泡次数为3次。
採用微波消解-火燄原子吸收光譜法測定瞭枇杷花茶中微量元素鈣、鐵、錳、鎂、鋅、鎳和銅的含量，併對枇杷花茶進行不同浸泡時間和不同浸泡次數微量元素溶齣研究。結果錶明，枇杷花茶中微量元素豐富，含量順序為：鈣＞鐵＞錳＞鎂＞鋅＞鎳＞銅。溶齣特性研究錶明，鈣和鎂最易溶齣，而鐵和錳較不容易溶齣，微量元素的溶齣量與浸泡時間呈現良好對數關繫，單泡微量元素的溶齣量與遲泡次數呈負指數關繫。研究錶明，採用微波消解-火燄原子吸收光譜法測定枇杷花茶中鈣、鐵等元素含量方法簡便、準確、靈敏，適閤常規分析；枇杷花茶最佳飲用條件為浸泡時間30 min，浸泡次數為3次。
채용미파소해-화염원자흡수광보법측정료비파화다중미량원소개、철、맹、미、자、얼화동적함량，병대비파화다진행불동침포시간화불동침포차수미량원소용출연구。결과표명，비파화다중미량원소봉부，함량순서위：개＞철＞맹＞미＞자＞얼＞동。용출특성연구표명，개화미최역용출，이철화맹교불용역용출，미량원소적용출량여침포시간정현량호대수관계，단포미량원소적용출량여충포차수정부지수관계。연구표명，채용미파소해-화염원자흡수광보법측정비파화다중개、철등원소함량방법간편、준학、령민，괄합상규분석；비파화다최가음용조건위침포시간30 min，침포차수위3차。
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 ele-ments in different soaking time and times were analyzed.The results show that the contents of trace element in descend-ing 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.
