New tracer ammonium molybdate was used and samples with high or low concentration of molybdenum were analyzed by means of colorimetry and polarography.
采用新示踪剂钼酸铵，并对高、低不同浓度的钼样品进行比色法和示波极谱法分析。
The result showed the best conditions were below: add low concentration sample first, then drop samples reversly around the clock (1234);
结果表明：先滴加低浓度样品液再按逆时针方向滴样（12 34） ；
This method can be applied to some samples having low concentration of lithium.
该方法也适用于低锂含量的样品。
The samples doped with magnetic elements at low concentration showed ferromagnetic ordering.
结果表明，上述磁性元素掺杂的样品均表现出室温铁磁性。
The samples doped with magnetic elements at low concentration showed ferromagnetic ordering.
结果表明，上述磁性元素掺杂的样品均表现出室温铁磁性。
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