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在本文所述条件下,用原子捕集法测定铜的灵敏度较常规法高191倍,再考虑到离子交换法的浓缩倍数至少可达40倍,因此至少可使铜的测定灵敏度提高7640倍,从而成功地测定了水中千分之几—千分之几PPb级的超痕量铜。
Under the conditions described in this article, the sensitivity of copper determined by atomic capture method is 191 times higher than that of the conventional method. Considering that the concentration ratio of ion exchange method is at least 40 times, the sensitivity of copper determination is at least 7640 times higher. Successfully measured the water a few thousandths - a few thousandths PPb level of ultra-trace copper.