ICP-OES Principle: Revealing the Sample's Secrets

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SpectroAI
Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) has become the leading technology...
Video Transcript:
ICP-OES光谱仪是用来做什么的? 用于分析物质的组成。 为达到此目的,从根本上说,光谱仪将样品溶液转化为光…… ……然后把光转化为所需数据。 为了准确检测样品溶液中的元素含量, 我们将样品带入光谱仪中的极热的等离子体。 当样品受热离解为原子和离子时,它们就会发光。 光谱仪光学系统将捕获这些光并将它们色散成独立的光谱线。 这些光的强度通常与样品中给定元素的浓度有关。 这是分析的关键。 通过精确测量光强度, 我们可以确定样品中存在哪些元素及含量。 现在,让我们以顶级的ICP-OES光谱仪为例, 如SPECTRO ARCOS。 一步一步来解析它的工作原理: 样品溶液被吸入蠕动泵中。 在雾化器中,它被转换成气溶胶。 在雾室中,较大的液滴会被排出。 而较小的液滴会被载带到高热的等离子体中。 在等离子体中,样品气溶胶蒸发, 其原子和离子的外层电子被激发…… ……从而会发出特征波长的光。 光被传输到高分辨率、无吹扫、密封的光学系统…… ……该系统将光色散为待测元素的特定波长。 当这些波长的光到达探测器阵列时, 每个特定波长的光及强度将被记录下来。 复杂的软件系统将它们转换为特定元素的浓度。 因此,样品中的秘密 (它包含哪些元素以及确切含量) 会被我们精确地获取。 这些过程虽然很复杂,但结果非常准确。 做为一种高端基础仪器, 可靠的结果使得像SPECTRO ARCOS这样的全新 一代ICP-OES光谱仪, 非常适合于高负荷实验室使用。
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