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85问答库 > ．原子吸收分光光度分析为何要用待测元素的空心阴极灯做光源？能否用氢灯或钨灯代替，为什么？

．原子吸收分光光度分析为何要用待测元素的空心阴极灯做光源？能否用氢灯或钨灯代替，为什么？

2025-03-24 09:27:42

推荐回答（2个）

回答1：

不同元素的空心阴极灯能发出特征谱线，激发火焰中待测原子。然后经光电倍增管接收，放大，数据处理，得到结果。
若用氘灯（小心问一句：有氢灯么？）或钨灯，则不能发出相应元素的特征谱线，也就得不到结果。

回答2：

去除其他元素的光波波长的干扰我猜的。。。

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