分子光谱对于待测元素分析线的干扰是光谱分析中不可忽略的一类光谱干扰。ICP-AES中的分子光谱主要来自O_2、NH、NO以及OH分子的发射,其中OH分子光谱产生的光谱干扰尤为严重。在ICP-AES中,试样的引入方法一般是将样品处理成溶液后,以气溶胶的形式引入等离子体中,因此随之带入少量水分。在 The interference of molecular spectra for the elemental analysis line to be measured is a type of spectral interference that can not be ignored in spectral analysis. The molecular spectra of ICP-AES mainly come from the emission of O 2, NH, NO and OH molecules, and the spectrum interference caused by the OH molecule spectrum is particularly serious. In ICP-AES, the introduction of the sample is generally done by introducing the sample into a solution that is introduced into the plasma as an aerosol, thereby bringing with it a small amount of moisture. in