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一、前言众所周知,测定铅同位素丰度一般采用质谱法。但是由于质谱计价格昂贵、设备庞大、分析速度慢、因而大大限制了它的应用和推广。然而采用水冷的空心阴极灯作光源,用法布里-佩罗标准具、气压扫描光电记录的发射光谱法测定岩石样品中铅同位素丰度,虽然其精密度不如质谱法高,但却具有如下优点,即:设备简单、操作方便、成本低、速度快,便于推广。加之目前国产质谱计远还不能满足科研和生产的需要,因而发射光谱法仍有一定的使用价值。开展发射光谱法测定铅同位素丰度主要是为地质科研服务。近
First, the preamble As we all know, the determination of lead isotope abundance generally use mass spectrometry. However, due to the expensive mass spectrometer, large equipment, slow analysis, which greatly limits its application and promotion. However, the water-cooled hollow cathode lamp is used as the light source to determine the Pb isotope abundance in rock samples by the Fabry-Perot etalon and barometric pressure-scan photoelectron spectroscopy. Although its precision is not as high as that of mass spectrometry, it has the following advantages , Namely: The equipment is simple, easy to operate, low cost, fast, easy to promote. Coupled with the current domestic mass spectrometer far can not meet the needs of scientific research and production, and therefore there is still some use of emission spectroscopy. To carry out emission spectrometry for the determination of lead isotope abundance is mainly for geological research services. near