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本文采用特制的双毛细管雾化器引入有机溶剂,产生的气溶胶经预混合,在载气(Ar)的作用下导入ICP中激发.比较了有机溶剂在FI-ICP与非FI-ICP体系中的行为,所得实验结果表明:(1)引入微体积的有机溶剂于FI-ICP体系,对待测元素谱线强度有不同程度的增敏作用,但依元素和谱线不同而异;(2)同非FI-ICP体系比较,在FI-ICP体系中,ICP对有机溶剂有较强的承受能力,原则上可用于不同类型有机溶剂的引入;(3)在试验过程中,未发现因有机溶剂在高温下分解所造成的碳粒沉积现象。
In this paper, a special dual-capillary nebulizer is introduced into the organic solvent, and the resulting aerosol is premixed and introduced into the ICP for excitation under the action of a carrier gas (Ar). The experimental results showed that: (1) Micro-volume organic solvents were introduced into the FI-ICP system to sensitize the intensities of the elemental spectra to different degrees of sensitization (2) Compared with non-FI-ICP system, ICP has a strong capability of supporting organic solvents in FI-ICP system, and it can be used in principle for different types of organic solvents (3) During the test, no carbon deposition was observed due to decomposition of organic solvents at high temperature.