ICP-MS/ICP-AES快速测定东北大豆中有益元素和重金属含量

在没有被转基因大豆入侵前，对于东北大豆的研究将为种质资源保护大豆提供重要的参考数据。文章用ICP-MS/ICP-AES技术对东北嫩江地区普遍栽培的10个大豆品种中的全元素进行了研究。表明东北大豆中含有丰富的人体必需元素，其大量元素(含量超过μg·g-1级)的含量从高到低是K>P>Mg>Ca>Fe>Rb>Mn≈Zn>Si≈Na≈Al≈Ba≈Ni≈Cu，有益微量元素B，Mo和Se含量在10～2 000 ng·g-1之间。丰量元素Fe，Mn和Zn含量达到20～80 μg·g-1之间。除了上述有益元素以外，东北大豆中重金属含量均达到国家标准，但是Cr的含量接近200 ng·g-1,应当加强控制。

Application of ICP-MS/ICP-AES to the Detection of Wholesome Elements and Heavy Metals in Soybean from Northeastern China

With the rapid development of transgenic plant,the protection of species is becoming more and more important. The contents of wholesome elements and heavy metals in ten soybean species from northeastern China were studied by ICP-MS/CIP-AES to detect the heavy metals and microelements. The results showed that the Northeastern soybean contained many elements necessary to human health,the sequence of macroelements (higher than μg·g-1) was K>P>Mg>Ca>Fe>Rb>Mn≈Zn>Si≈Na≈Al≈Ba≈Ni≈Cu,and the most important is that the contents of Fe,Mn and Zn range from 20 to 80 μg·g-1,which are important to human health. Besides the microelements,the contents of heavy metals (As,Cr,Pb and Cd) are also the important standard to identify the quality of farm produce,and the results showed that northeastern soybean contained little heavy metals except Cr (near 200 ng·g-1). All the data showed that northeastern soybean accords with the national hygiene standards,but the protection should be strengthened.