石墨炉原子吸收光谱法测定蘑菇中的镉、铅  

Determination of Cadmium and Lead in Mushroom Using Graphite Furnace Atomic Absorption Spectroscopy

作　　者：马戈[1] 谢文兵[2] 于桂红[2] 朱秀梅[3] 

机构地区：[1]长春工程学院应用化学系,长春130021 [2]中国科学院长春应用化学研究所,国家电化学和光谱研究分析中心,长春130022 [3]吉林大学南湖校区医院,长春130012

出　　处：《分析化学》2003年第9期1109-1111,共3页Chinese Journal of Analytical Chemistry

摘　　要：采用石墨炉原子吸收光谱法测定蘑菇中的镉、铅 ,以磷酸二氢铵和硝酸镁作混合基体改进剂 ,提高了测定的灰化温度 ,消除了基体干扰。方法简便 ,快速 ,准确度高。镉和铅的相对标准偏差为 3 .7%～ 6.0 %和7.3 %～7.9% ;回收率为 98%～ 1 0 6%和 98%～1 0 4% ;检出限为 0 .0 0 9μg g和 0 .0 3 2 μg g。Cd and Pb in mushroom were determined by graphite furnace atomic absorption spectrometry, with NH4H2PO4 and Mg(NO3)(2) as a matrix modifier, which could enhanced the ashing temperature and eliminate the matrix interference. The method is rapid, simple and accuracy. The relative standard deviation of Cd and Pb 3.7% similar to 6.0% and 7.3% similar to 7.9%, the recovery was 98% similar to 106% and 98% similar to 104%, the detection limit was 0.009 mug/g and 0.032 mug/g, respectively.

关 键 词：石墨炉原子吸收光谱法 测定 蘑菇 镉 铅 改进剂 食品 微量元素 

分 类 号：O657.31[理学—分析化学]