| 微波消解-平台石墨炉原子吸收光谱法测定饲料中微量硒 |
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| 引用本文： | SHANG Jun,商军,潘娟,吴剑平.微波消解-平台石墨炉原子吸收光谱法测定饲料中微量硒[J].中国农业科技导报,2008,10(Z2):10-14. |
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| 作者姓名： | SHANG Jun 商军 潘娟 吴剑平 |
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| 作者单位： | 上海市兽药饲料监察所 |
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| 摘 要： | 通过优化消解溶剂和微波条件,确定了微波消解-平台石墨炉原子吸收法的测定条件。结果表明,以HNO3+HC lO4+H2O2作为微波消解溶剂最佳,在基体改进剂Mg(NO3)2和Pd(NO3)2存在下,可有效地消除基体的影响。建立的微波消解-平台石墨炉原子吸收光谱法测定饲料中硒的方法,硒浓度线性范围为5~100 ng/mL(r=0.999 2),检出限为0.53 ng/mL,回收率为88.7%~106.3%,RSD为5.9%。同时,用该检测方法测定饲料中硒具有较高的可操作性。
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| 关 键 词： | 饲料 石墨炉原子吸收光谱法 微波消解 微量硒 |
Determination of Trace Selenium in Feed Using Platform Graphite Furnace Atomic Absorption Spectrometry Linking Microwave Digestion |
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| SHANG Jun|PAN Juan|WU Jian-ping.Determination of Trace Selenium in Feed Using Platform Graphite Furnace Atomic Absorption Spectrometry Linking Microwave Digestion[J].Journal of Agricultural Science and Technology,2008,10(Z2):10-14. |
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| Authors: | SHANG Jun|PAN Juan|WU Jian-ping |
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| Institution: | Shanghai Supervisory Institute of Veterinary Drugs and Feedstuffs|Shanghai 201103|China |
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| Abstract: | Conditions of platform graphite furnace atomic absorption spectrometry linking microwave digestion were determined by optimizing solvent and conditons of microwave digestion.The results showed that HNO3 HClO4 H2O2 was the best solvent of microwave digestion.The solvent could eliminate the effect of matrix in presence of matrix modifier Mg(NO3)2 and Pd(NO3)2.The concentration of selenium and peak area was linear correlation between 5~100 ng/mL(r=0.999 2).Detection limit was 0.53 ng/mL,and the reclaim ratio was 88.7%~106.3% with the relative standard deviation of 5.9%.The method was successfully applied to the determination of trace selenium in feeds. |
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| Keywords: | feeds GFAAS microwave digestion technique trace selenium |
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