| 微波消解-石墨炉原子吸收光谱法测定人参中铅和镉 |
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| 引用本文： | 张冠英,李青,郭金芝,王蕴馨,马莹,姜楠.微波消解-石墨炉原子吸收光谱法测定人参中铅和镉[J].人参研究,2014(2):38-39. |
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| 作者姓名： | 张冠英 李青 郭金芝 王蕴馨 马莹 姜楠 |
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| 作者单位： | 吉林省疾病预防控制中心,吉林长春130062 |
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| 基金项目： | 吉林省卫生厅2010年科研项目“人参新资源食品安全性评价”. |
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| 摘 要： | 目的建立一种快速准确的微波消解-石墨炉原子吸收光谱法测定人参中铅和镉的含量。方法采用微波消解对样品进行前处理,应用石墨炉原子吸收光谱法测定人参中铅和镉的含量。结果铅在0μg/L~40μg/L范围,镉在0μg/L~3μg/L范围具有良好的线性,相关系数均大于0.999,检出限分别为3.6μg/kg和0.42μg/kg,相对标准偏差(RSD)为9.11%和4.70%,加标回收率在93.3%~106.7%之间。结论该方法简便快速、准确灵敏,适用于测定人参中铅和镉的含量。
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| 关 键 词： | 微波消解 石墨炉原子吸收光谱法 人参 铅 镉 |
Microwave digestion-graphite furnace atomic absorption spectrometry |
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| Institution: | ZHANG Guanying ,LI Qing ,GUO Jinzhi, WANG Yunxin ,MA Ying, JIAMG Nan( Jilin Provincial Center for Disease Control and Prevention, Changchun 130062) |
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| Abstract: | Objective： To develop a quickly and accurately method for determination of lead and cadmium in ginseng by Microwave digestion-graphite furnace atomic absorption spectrometry. Methods： After microwave digestion, the samples were determined directly by -graphite furnace atomic absorption spectrometry. Results： Lead showed good linearity in the concentration range of 0μg/L -40μg/L, and that the cadmium showed good linearity in the concentration range of 0μg/L -3μg/L.Both of the correlation coefficient were beteer than 0.9999. The detection limit of lead was 3.6μg/kg, and detection limit of cadmium was 0.42μg/kg. The relative standard deviation （RSD） of lead was 9.11%,and the relative standard deviation （RSD） of cadmium was 4.70%. The standard addition recovery rate is between 93.3% - 106.7%. The method is simple, rapid, accurate and sensitive , is suitable for the determination of the content of lead and cadmium in ginseng. |
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| Keywords: | Microwave digestion Graphite furnace atomic absorption spectrometry Ginseng Lead cadmium |
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