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| 微波消解-氢化物发生-冷原子吸收光谱法测定茶叶中的镉 | |
| 引用本文： | 石玮玮,淦五二. 微波消解-氢化物发生-冷原子吸收光谱法测定茶叶中的镉[J]. 光谱实验室, 2012, 29(3): 1569-1572 |
| 作者姓名： | 石玮玮 淦五二 |
| 作者单位： | 1. 潍坊医学院药学与生物科学学院 山东省潍坊市宝通西街7166号 261053 2. 中国科学技术大学化学系 合肥市金寨路96号 230026 |
| 摘 要： | 采用微波消解法对茶叶样品进行处理,使用改进的雾化装置,在室温下用原子吸收光谱法测定茶叶中的镉,对各种实验参数进行了优化,镉的检出限(K=3,n=11)为18ng.L-1,其相对标准偏差为3.5%,回收率在94.8%—104.2%之间。方法操作简单、实用、灵敏度高,适用于茶叶中镉的快速测定。 |
| 关 键 词： | 微波消解 氢化物发生 冷原子吸收光谱法 茶叶 镉 |
Determination of Cadmium in Tea by Hydride Generation-Cold Atomic Absorption Spectrometry with Microwave Digestion |
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| SHI Wei-Wei , GAN Wu-Er. Determination of Cadmium in Tea by Hydride Generation-Cold Atomic Absorption Spectrometry with Microwave Digestion[J]. Chinese Journal of Spectroscopy Laboratory, 2012, 29(3): 1569-1572 | |
| Authors: | SHI Wei-Wei GAN Wu-Er |
| Affiliation: | SHI Wei-Wei GAN Wu-Er a(Department of Medicine and Biological Sciences,Weifang Medical College,Weifang,Shandong 261053,P.R.China)a(Department of Chemistry,University of Science and Technology of China,Hefei 230026,P.R.China) |
| Abstract: | Tea samples were digested by microwave digestion method,and a modified atomizer was used,and cadmium in tea was determined by atomic absorption spectrometry at room temperature.The various experimental parameters were optimized.The detection limit of cadmium was 18ng·L-1(K=3,n=11)with RSD of 3.5%.This method is simple,practical with high sensitivity,that is applied to rapidly determining cadmium in tea with the recoveries in the range of 94.8%—104.2%. |
| Keywords: | Microwave Digestion Hydride Generation Cold Atomic Absorption Spectrometry Tea Cadmium |
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