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当前位置: 首页 > 文章 > 微波消解-氢化物原子荧光光谱法同时测定贼小豆中的砷、硒、锑 食品科学 2013,34 (10) 215-218
Position: Home > Articles > 微波消解-氢化物原子荧光光谱法同时测定贼小豆中的砷、硒、锑 FOOD SCIENCE 2013,34 (10) 215-218

微波消解-氢化物原子荧光光谱法同时测定贼小豆中的砷、硒、锑

作  者：
高向阳;韩帅;王莹莹;乔明武
单  位：
郑州科技学院食品科学系;河南农业大学食品科学技术学院
关键词：
贼小豆;微波消解;氢化物原子荧光法;砷;硒;锑;同时测定
摘  要：
采用微波消解,以郑州地区贼小豆为样品,以绿豆作为对照,建立氢化物发生原子荧光光谱法同时测定样品中砷、硒、锑的方法.在实验条件下,砷、硒和锑的质量浓度与荧光强度均呈现良好的线性,检出限分别为0.020、0.040ng/mL和0.050ng/mL.贼小豆试液平行测定的RSD(n=6)分别为砷2.2%、硒为0.97%、锑为2.6%,锑的平均回收率为97.19%~98.72%(n=6).对比实验结果表明,贼小豆中硒的含量明显高于绿豆,南阳绿豆中砷的含量明显低于贼小豆和郑州绿豆,郑州绿豆中锑的含量高于贼小豆和南阳绿豆.将微波消解技术与氢化物发生-原子荧光光谱分析法结合,在同一试液中同时测定砷、硒、锑,得到了满意结果,该法简便、灵敏准确、成本低廉、工作效率大为提高,有一定的推广应用价值.
单  位：
Department of Food Science,Zhengzhou Institute of Science and Technology,Zhengzhou 450064,China%College of Food Science and Technology,Henan Agricultural University,Zhengzhou 450002,China
关键词：
Vigna minima(Roxb.) Ohwi et Ohashi seeds%microwave digestion%hydride generation-atomic fluorescence spectrometry%arsenic%selenium%antimony%simultaneous determination
摘  要：
A method for simultaneous determination of arsenic,selenium and antimony in Vigna minima(Roxb.) Ohwi et Ohashi seeds by hydride generation-atomic fluorescence spectrometry(AFS) with microwave digestion was established.This method was also applied for determination of mung beans.Under optimized conditions,the concentration of arsenic,selenium and antimony showed a good linear relationship with the fluorescence intensity and the limits of detection were 0.020,0.040 ng/mL and 0.050 ng/mL,respectively.The RSDs for 6 parallem determinations of arsenic,selenium and antimony were 2.2%,0.97% and 2.6%,respectively.Average recoveries for antimony ranged from 97.19% to 98.72%(n = 6).The results of comparative experiments proved that Vigna minima(Roxb.) Ohwi et Ohashi seeds contained a much higher level of selenium,arsenic content in mung beans from Nanyang was significantly lower than in Vigna minima(Roxb.) Ohwi et Ohashi seeds and mung beans from Zhengzhou,which was richer in antimony than the other two samples.The described AFS method has been sucessfully applied for simultanenous determination of arsenic,selenium and antimony with satisfactory results.It is simple,sensitive,accurate,low-cost and efficient and consequently deserves popularization.

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