原子吸收法测定二氧化锰中铜、铁、铅、镍、锌等微量元素,由于高浓度锰基体污染原子化系统,强烈的记忆效应大大降低了读数的准确性,而长时间使用,燃烧器缝隙将被堵塞而严重妨碍测定。因此二氧化锰样品溶液,如不经预分离,直接用原子吸收法定量各元素,实际上是不可能获得正确、可靠结果的。本试验采用国产717型阴离子交换树脂对含锰12000ppm的样品,进行预分离试验。实验表明:锰的分离效率可达80％以上。各元素标准物添加回收试验,回收率为90～105％。本法由于排除了锰基体的干扰, Determination of manganese, manganese, copper, iron, lead, nickel, zinc and other trace elements by atomic absorption spectrometry, due to the high concentration of manganese atom contamination of the atomization system, a strong memory effect greatly reduces the accuracy of the reading, and long time use, burners The gap will be clogged severely hampered the assay. Therefore, manganese dioxide sample solution, such as without pre-separation, direct quantification of each element with atomic absorption method, in fact, is impossible to obtain correct and reliable results. The test using domestic 717 anion exchange resin manganese 12000ppm samples, pre-separation test. Experiments show that: manganese separation efficiency of up to 80%. Each element standard added recovery test, the recovery rate of 90 to 105%. Because this law ruled out the interference of manganese matrix,