离子交换-原子捕集-火焰原子吸收光谱法测定水中的超痕量镍

Determination of Ultratrace Nickel in Water by Ion Exchange-Atom Trapping Flame Atomic Absorption Spectrometry

在文中所述条件下,镍的原子捕集灵敏度较常规法高320倍,即在离子交换法浓缩仅40倍的情况下,可使镍的测定灵敏度提高12800倍,从而成功实现了ppt级超痕量镍的测定。

The sensitivity of the determination of nickel by atom trapping is 320 times higher than that obtained by conventional AAS method. By ion exchange method, the concentration factor can reach 40 times, thus the sensitivity for nickel increase 12800 fold, so that the determination of ultratrace nickel in water at ppt levels can be done successfully.