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Method and apparatus for reduction of matric interference in electrothermal atomizer for atomic absorption spectroscopy

机译:减少原子吸收光谱电热雾化器中基质干扰的方法和装置

摘要

The invention provides an improved method and apparatus for reduction of matrix interference in an electrothermal atomizer for atomic absorption spectroscopy. In a carbon rod atomizer within which a sample to be analyzed is atomized to the atomic state, the graphite furnace tube is electrothermally heated from the ends to the center where the sample is located. This provides sufficient thermal energy for complete decomposition of the sample molecules to the atomic state. In a first apparatus embodiment two-pronged substantially Y-shaped graphite electrode support holders for the graphite furnace tube are provided. In a second apparatus embodiment a double-walled graphite furnace tube is provided.
机译:本发明提供了一种用于在原子吸收光谱法的电热雾化器中减少基体干扰的改进的方法和设备。在碳棒雾化器中,待分析样品被雾化成原子态,石墨炉管从两端到样品所在的中心进行电热加热。这提供了足够的热能,可将样品分子完全分解为原子态。在第一设备实施例中,提供了用于石墨炉管的两叉的,大致为Y形的石墨电极支撑架。在第二设备实施例中,提供了双壁石墨炉管。

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