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| 微波消解-ICP/MS法同时测定鱼肉中的砷和汞 |
| Simultaneous Determination of As and Hg in Fish by Microwave Digestion ICP/MS |
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| DOI： |
| 中文关键词: 砷 汞 微波消解 电感耦合等离子体质谱法 鱼肉 |
| 英文关键词: As Hg Microwave digestion ICP MS Fish |
| 基金项目:南京市2016年度环保科研课题基金资助项目（201604） |
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| 中文摘要: |
| 采用微波消解处理鱼肉样品，用电感耦合等离子体质谱法测定样品中砷和汞。通过试验优化微波消解参数、酸体系及赶酸温度，用在线加入内标方法消除基体干扰及仪器漂移对测定的影响。方法在0 μg/L～40.0 μg/L范围内线性良好，砷和汞的方法检出限分别为0.002 mg/kg和0.001 mg/kg，实际样品6次测定结果的RSD为5.4%～15.6%，加标回收率为90.0%～110%。将该方法用于测定芹菜和扇贝标准物质，测定值在标准值不确定度范围内。 |
| 英文摘要: |
| The fish samples were treated by microwave digestion, and ICP/MS was used to simultaneously determine arsenic (As) and mercury (Hg). The microwave digestion parameters, acid system and removal temperature were optimized, and the internal standards were added online to eliminate the impacts of matrix interferences and instrument drift. The method had good linearity in the range of 0 μg/L~40.0 μg/L, and the detection limits of As and Hg were 0.002 mg/kg and 0.001 mg/kg, respectively. The relative standard deviation of actual samples were 5.4%~15.6%(n=6), and the recoveries were 90.0%~110%. Two certified reference materials were analyzed meanwhile and the results were within the uncertainty of the standard values. |
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