石墨炉原子吸收法研究锡在萝卜与旱稻中的分布特征

Study on the Distribution Characteristics of Tin in the Upland rice and Radish by Graphite Furnace Atomic Absorption Spectrometry

锡的环境影响和生态效应近年来引起全世界的广泛关注。以硝酸锶为石墨炉原子吸收测定锡的基体改进剂,灵敏度和检出限均得到显著改善。将该方法用于研究污灌区的锡在萝卜、旱稻植株不同部位的分布。研究结果显示锡在萝卜不同部位的分布是:叶茎<根茎<叶部;水稻植株不同部位的积累分布是:根部<主茎<籽实<叶部。

A new method was developed for the determination of tin by graphite furnace atomic absorption spectrometry （GFAAS） using strontium nitrate as chemical modifier. The sensitivity and detection limit for Sn in the presence of strontium modifier were improved evidently as compared to that without the modifier. The proposed method was applied to the determinations the concentration of tin in different parts of upland rice and radish. The results showed the distribution of tin in radish was caudex〈 the root〈 leaf and that in upland rice was root〈 caulis〈 seed〈 leaf.