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设计了一种用于空气-氢火焰原子吸收法的氢化物发生器及点火装置。该方法的特点为用还原反应所发生的氢作为火焰的燃气。系统中加入还原剂和试样溶液,清洗以及排废液都是半自动的。反应所发生的氢化物及氢由空气载入燃烧器,而无须另加载气,然后由点火器点燃并原子化。本文介绍了系统的结构及操作要点。系统内以喷吸器产生的负压为动力,不要其它动力。
A hydride generator and ignition device for air-hydrogen flame atomic absorption spectrometry was designed. The method is characterized by the reduction of the reaction of hydrogen as a flame gas. Reducing agent and sample solution are added to the system, cleaning and waste discharge are semi-automatic. The hydride and hydrogen generated by the reaction are carried by the air into the burner without additional carrier gas, which is then ignited and atomized by the igniter. This article describes the structure of the system and operating points. In the system, the negative pressure generated by the ejector is used as the motive force, and no other motive force is required.