食品科学2011，Vol.32Issue(18)：218-220,3.
微波消解-电感耦合等离子体发射光谱法测定茶叶中的镉
Determination of Cadmium in Tea Using Microwave Digestion and Inductively Coupled Plasma Atomic Emission Spectroscopy
摘要
Abstract
The contents of cadmium in tea samples including green tea,oolong tea,jasmine tea,and Pu,er tea were determined using microwave digestion followed by inductively coupled plasma atomic emission spectroscopy（ICP-AES）.The linear range was from 0 to 100μg/L（R2 = 0.9998）.The limit of detection（LOD） for cadmium was 1.88μg/L.The spike recovery was ranged from 95.7% to 102.3% with a relative standard derivation（RSD） of 1.1%.In conclusion,the method is a rapid,convenient,and highly sensitive method to determine cadmium content in tea samples.The contents of cadmium in randomly sampled forty tea samples were between 0.017 mg/kg and 0.138 mg/kg with an average of（0.082±0.028） mg/kg.The average content of cadmium in green tea showed a significant difference when compared with other tea samples（P0.05）.关键词
茶叶/镉/微波消解/电感耦合等离子体发射光谱（ICP-OES）Key words
tea/cadmium/microwave digestion/inductively coupled plasma atomic emission spectroscopy（ICP-OES）分类
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杨秀芳,许凌,徐建峰,涂云飞,孔俊豪..微波消解-电感耦合等离子体发射光谱法测定茶叶中的镉[J].食品科学,2011,32(18):218-220,3.基金项目
浙江省分析测试基金项目 （）
