| 潮州凤凰茶硒含量的测定 |
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| 引用本文： | 黄晓捷,赖鹤鋆.潮州凤凰茶硒含量的测定[J].安徽农业科学,2011,39(31):19619-19620. |
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| 作者姓名： | 黄晓捷 赖鹤鋆 |
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| 作者单位： | 韩山师范学院化学系,广东潮州,521041 |
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| 摘 要： | 目的]对潮州凤凰茶硒含量进行测定。方法]凤凰茶样品经干燥粉碎后,用硝酸湿法消解,原子荧光光谱法测定茶叶中的硒含量。结果]硒浓度在0～40.00μg/L范围内与荧光强度呈线性关系,标准曲线为If=130.801 0C＋137.897 3,相关系数为R2=1.000 0,检出限为0.097μg/L,相对标准偏差为1.18%,回收率为102.4%～105.2%。方法]该方法操作简单、快速、灵敏度高,适合测定茶叶中的硒含量;凤凰茶中含有比较丰富的硒。
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| 关 键 词： | 凤凰茶 硒 原子荧光光谱法 |
Determination of Selenium Content in Chaozhou Fenghuang Tea |
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| HUANG Xiao-jie et al.Determination of Selenium Content in Chaozhou Fenghuang Tea[J].Journal of Anhui Agricultural Sciences,2011,39(31):19619-19620. |
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| Authors: | HUANG Xiao-jie |
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| Institution: | HUANG Xiao-jie et al(Chemistry Department,Hanshan Normal University,Chaozhou,Guangdong 521041) |
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| Abstract: | Objective]The research aimed to determine the selenium content of Fenghuang tea.Method] The Fenghuang tea samples is dried and crushed,and then is digested by HNO3.The selenium content is determined in tea by using Atomic fluorescence spectrometry method.Result] The relationship between selenium concentration and fluorescence intensity is linear in the range of 0-40.00 μg/L.The standard curve is If=130.801 0C+137.897 3,and the correlation coefficient R is 1.000 0.The detection limit is 0.097 μg/L.The relative standard deviation is 1.18%,and the recovery rate is range from 102.4% to 105.2%.Conclusion] This method is simple,fast and of high sensitivity,being suitable for the daily determination of selenium content in tea.The results showed that Fenghuang tea contains the rich selenium. |
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| Keywords: | Fenghuang tea Selenium Atomic fluorescence spectrometry |
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