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本文介绍的直读光谱仪,是为分析微量元素研制的。测量系统采用先放大后积分的线路结构,时钟电路,元素选择系统和程序控制电路由数字逻辑组件、晶体管组成,动作准确可靠,使用寿命长。测量系统的测量精密度优于0.3％;可以同时分析十一个元素,结果由打印机直接印出,实现了光谱分析的自动记录,提高了工作效率;溶液干渣法分析灵敏度为10~(-7) g/ml(其中Cu、Mn为10~(-8)g/ml);方法回收率为80％—121％;分析精密度优于士30％。本直读光谱仪采用局部恒温装置。其温度可在20℃—30℃范围内调节,温度平衡时间为二小时,控温精密度优于±0.5℃。近年来,我国也已广泛地采用直读光谱仪作炉前分析,有的已配上小型计算机进行数据处理,控制生产。但在微量元素分析方面工作做的较少。为在老设备上挖潜革新,为四个现代化建设服务,我们研制成分析微量元素的直读光谱仪。
This article describes the direct-reading spectrometer, developed for the analysis of trace elements. The measuring system adopts the circuit structure that first enlarges and then integrates, the clock circuit, the element selection system and the program control circuit are composed of digital logic components and transistors. The operation is accurate and reliable and the service life is long. The measurement precision of the measuring system is better than 0.3%. Eleven elements can be analyzed at the same time. The result is directly printed by the printer, which realizes the automatic recording of spectrum analysis and improves the working efficiency. The analytical sensitivity of dry slag method is 10 ~ 7) g / ml (Cu, Mn is 10 ~ (-8) g / ml). The recoveries were 80% -121%. The direct reading spectrometer using local thermostat device. The temperature can be adjusted in the range of 20 ℃ -30 ℃, the temperature equilibration time of two hours, temperature control precision better than ± 0.5 ℃. In recent years, China has also widely used direct reading spectrometer for furnace analysis, and some have been equipped with small computers for data processing and control of production. However, there is less work on trace element analysis. In order to tap potential innovation in old equipment and serve the four modernizations, we developed a direct-reading spectrometer for the analysis of trace elements.