| 虾粉中总砷测定方法的探讨 |
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| 引用本文： | 王锟,卫晓红,王开宇,谢淑兰.虾粉中总砷测定方法的探讨[J].化学分析计量,2010,19(2):42-44. |
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| 作者姓名： | 王锟 卫晓红 王开宇 谢淑兰 |
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| 作者单位： | 烟台市产品质量监督检验所,烟台,264003 |
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| 摘 要： | 用氢化物原子荧光光度法测定虾粉中总砷含量时,对干法灰化、湿法消解、微波消解3种样品处理方法对虾粉中砷元素测定结果的影响进行了比较。通过试验确定了最佳消解条件。砷元素浓度在0~10μg/L的范围内与荧光强度呈线性关系,线性相关系数r=0.999 6,检出限为0.2μg/L。比对结果表明,干法灰化适合于测定虾粉中总砷的含量,湿法消解测定总砷的含量偏低,微波消解不适合测定虾粉中总砷的含量。采用干法灰化-氢化物原子荧光光度法测定虾粉中总砷含量,加标回收率为76.2%~106.0%。
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| 关 键 词： | 虾粉 干法灰化 砷 原子荧光光度计 |
RESEARCH ON THE DETERMINATION OF TOTAL ARSENIC CONTENT IN SHIUMP POWER |
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| Wang Kun,Wei Xiaohong,Wang Kaiyu,Xie Shulan.RESEARCH ON THE DETERMINATION OF TOTAL ARSENIC CONTENT IN SHIUMP POWER[J].Chemical Analysis And Meterage,2010,19(2):42-44. |
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| Authors: | Wang Kun Wei Xiaohong Wang Kaiyu Xie Shulan |
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| Institution: | ( Yantai City Products Quality Supervision and Testing Institue,Yantai 264003, China ) |
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| Abstract: | Different pretreatment methods such as dry ashing, wet digestion, microwave digestion were discussed for the de- termination of total arsenic in shrimp powder. The best digestion conditions were confirmed. Concentration of total arsenic was linear with fluorescence intensity in the range of 0 - 10 ug/L. The results showed that dry ashing was more suitable for determination of total arsenic in shrimp powder. The result obtained by using wet digestion was lower than the actual content. Microwave digestion was not suitable for determination of total arsenic in shrimp powder. The recoveries of dry ashing - hydride generation atomic fluorescence method was 76.2% - 106.0%. |
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| Keywords: | shrimp powder dry ashing arsenic atomic fluorescence spectrometer |
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