菊花茶中重金属和微量元素溶出特性研究  

Study on Dissolution Characteristics of Heavy Metals and Trace Elements in Chrysanthemum Tea

作　　者：唐宁 杨永贵 熊嘉成 高娜[1] 胡静[1] 赵首萍[1] 叶雪珠[1] TANG Ning;YANG Yonggui;XIONG Jiacheng;GAO Na;HU Jing;ZHAO Shouping;YE Xuezhu(Institute of Agro-product Safety and Nutrition,Zhejiang Academy of Agricultural Sciences,Hangzhou,Zhejiang 310000,China)

机构地区：[1]浙江省农业科学院农产品质量安全与营养研究所,杭州310000

出　　处：《中国无机分析化学》2024年第7期995-1005,共11页Chinese Journal of Inorganic Analytical Chemistry

基　　金：浙江省重点研发计划项目(2015C02042)。

摘　　要：为了探究菊花茶和茶汤中重金属及微量元素含量,指导菊花茶的饮用,对浙江主要菊花茶品种皇菊和金丝皇菊的重金属和微量元素含量及其溶出特性进行了分析。通过电感耦合等离子体质谱法(ICP-MS)和电感耦合等离子体发射光谱(ICP-OES)测定Cd、Cr、Cu、Pb、Zn、Ni、As等7种重金属和K、Na、Ca、Mg、Se、Fe和Mn等7种微量元素的含量,并参照传统泡茶方式对不同浸泡时间及不同浸泡次数条件下的皇菊和金丝皇菊中重金属和微量元素的溶出特性进行研究。结果发现,两种菊花中Cd含量均超标,但茶汤中的Cd与其他重金属符合生活饮用水标准,随着浸泡时间延长,菊花中重金属和微量元素的溶出率逐渐增加,Cd的总溶出率仅9.9%~11.8%,Cr、Pb的总溶出率也在10%以下,但Cu、Zn、Ni、As溶出率较高,在45.0%~71.6%,微量元素的溶出率在1.7%~84.0%,其中K、Na、Se元素的溶出率较高,最高分别达到了84.0%、72.9%、78.0%;随着浸泡次数增加,菊花中重金属和微量元素的溶出率逐渐降低,在第一次浸泡后,菊花中Cd、Cr、Pb的溶出率较低,分别在0.3%~8.0%,Cd、Cr、Pb的初次溶出量占溶出总量50%~100%,Cu、Zn、Ni、As在第一次浸泡后,溶出量占总量的28%~63%,第一次浸泡后,菊花中的K和Se的溶出率较高,达到30.6%~65.8%,Na、Ca、Mg、Mn的溶出率在5.8%~29.4%。微量元素第一次浸泡溶出量占溶出总量的41%~100%。两种菊花中,金丝皇菊第一次浸泡溶出的重金属和微量元素比例均较高。通过延长浸泡时间可增加茶汤中重金属和微量元素的溶出,弃去初泡水的方式,虽然去除了过半含量的重金属,但同时也损失了大量微量元素,建议泡茶时延长浸泡时间。In order to investigate the contents of heavy metals and trace elements in chrysanthemum tea and tea soup,and guide the drinking of chrysanthemum tea,this article analyzed the content and dissolution characteristics of heavy metals and trace elements in the main chrysanthemum tea varieties Huangju and Jinsi Huangju in Zhejiang.The contents of seven heavy metals,including Cd,Cr,Cu,Pb,Zn,Ni,and As,and seven trace elements,including K,Na,Ca,Mg,Se,Fe,and Mn,were determined by inductively coupled plasma mass spectrometry(ICP-MS)and inductively coupled plasma emission spectroscopy(ICP-OES).The dissolution characteristics of heavy metals and trace elements in Huangju and Jinsi Huangju under different soaking times and conditions were studied by referring to traditional tea brewing methods.The results showed that the Cd content in both types of chrysanthemums exceeded the standard,but the Cd and other heavy metals in tea soup met the standard for drinking water.As the soaking time prolonged,the dissolution rates of heavy metals and trace elements in chrysanthemums gradually increased,with a total dissolution rate of only 9.9%—11.8% for Cd,and a total dissolution rate of Cr and Pb below 10%.However,the dissolution rates of Cu,Zn,Ni and As were relatively high,ranging from 45.0%—71.6%.The dissolution rates of trace elements were between 1.7%—84.0%,among which K,Na and Se elements having higher dissolution rates,reaching the highest of 84.0%,72.9%,and 78.0%,respectively.As the soaking times increased,the dissolution rates of heavy metals and trace elements in chrysanthemums gradually decreased.After the first soaking,the dissolution rates of Cd,Cr,and Pb in chrysanthemums were relatively low,ranging from 0.3% to 8.0%,respectively.The initial dissolution rates of Cd,Cr,and Pb accounted for 50% to 100% of the total dissolution rates.Cu,Zn,Ni,and As accounted for 28% to 63% of the total dissolution rate after the first soaking.After the first soaking,the dissolution rates of K and Se in chrysanthemums were relatively hig

关 键 词：皇菊 金丝皇菊 重金属 微量元素 溶出特性 

分 类 号：O657.31[理学—分析化学]