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| 微波消化原子荧光光谱法同时测定食品中镉和汞 | |
| 引用本文： | 许昆明,黎源倩,胡素华,邓浩. 微波消化原子荧光光谱法同时测定食品中镉和汞[J]. 现代预防医学, 2011, 38(3): 526-528 |
| 作者姓名： | 许昆明 黎源倩 胡素华 邓浩 |
| 作者单位： | 1. 四川大学华西公共卫生学院,成都,610041;四川中江县疾病预防控制中心 2. 四川大学华西公共卫生学院,成都,610041 3. 四川中江县疾病预防控制中心 |
| 摘 要： | [目的]建立原子荧光光谱法同时测定食品中镉和汞的方法。[方法]以硝酸-过氧化氢作氧化剂,微波消解食品样品后,用原子荧光光谱法同时测定样品中的镉和汞。优化了食品样品处理和原子荧光光谱检测的实验条件,同时对共存干扰元素的影响和消除进行研究。[结果]在优化的条件下,镉、汞分别在0.2～4.0μg/L范围内呈良好的线性关系(相关系数为镉0.9999、汞0.9994)。该方法的检出限镉为0.007μg/L、汞为0.032μg/L,镉和汞的定量限分别为0.022μg/L和0.105μg/L。测定的相对标准偏差(RSD)镉为1.65%～4.8%、汞为1.0%～5.1%。加标回收率分别为镉97.0%～119.5%、汞88.5%～104.0%。[结论]该方法灵敏度高、准确性好,快速简便,适用于食品样品中镉和汞的同时测定。 |
| 关 键 词： | 微波消化 原子荧光光谱法 镉,汞 食品 |
SIMULTANEOUS DETERMINATION OF CADMIUM AND MERCURY IN FOOD BY MICROWAVE DIGESTION ATOMIC FLUORESCENCE SPECTROMETRY |
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| XU Kun-ming,LI Yuan-qian,HU Su-hua,et al.. SIMULTANEOUS DETERMINATION OF CADMIUM AND MERCURY IN FOOD BY MICROWAVE DIGESTION ATOMIC FLUORESCENCE SPECTROMETRY[J]. Modern Preventive Medicine, 2011, 38(3): 526-528 | |
| Authors: | XU Kun-ming LI Yuan-qian HU Su-hua et al. |
| Affiliation: | XU Kun-ming,LI Yuan-qian,HU Su-hua,et al. (Public Health School,West China Center Of Medial Science,Sichuan University,Chengdu 610041,China) |
| Abstract: | [Objective] To establish a rapid and sensitive method for simultaneous determination of cadmium and mercury in food samples by atomic fluorescence spectrometry. [Methods] Microwave-digestion technique with HNO3-H2O2 was applied for the pretreatment of samples. The sample pretreatment and instrumental operation parameters were optimized. The experimental reaction system and reaction conditions were optimized, respectively. The influence from co-existing foreign ions and the elimination were also studied. [Re... |
| Keywords: | Microwave-digestion Atomic Fluorescence Spectrometry Cadmium Mercury Food |
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