论文部分内容阅读
1975年Ottaway等提出将石墨炉作为发射源用于原子发射分析,Molnar等也研究了从玻璃态碳炉的原子发射,此后,在基础研究和实际应用等方面的工作已有不少报导。现有研究结果表明,石墨炉原子发射法(GFAES)已能实际应用于一些元素的定量分析,并具有某些特点。如灵敏度高,据报导有40余种元素的检出极限低于或远低于1μB/ml,其中K、Na、Li、Ba等元素的检出极限远比石墨炉原子吸收法(GFAAS)低。此外,和其它发射法相比,尚有光谱线干扰少、背景发射较稳定、电离干扰小等优
In 1975, Ottaway et al. Proposed using graphite furnace as the emitter for atomic emission analysis. Molnar et al. Also studied the atomic emission from the glassy carbon furnace. Since then, much work has been reported on basic research and practical application. The existing research results show that graphite furnace atomic emission spectrometry (GFAES) has been applied to the quantitative analysis of some elements and has some characteristics. If the sensitivity is high, the detection limit of more than 40 kinds of elements has been reported to be lower or lower than 1μB / ml. Among them, the detection limits of K, Na, Li, Ba and other elements are much lower than those of GFAAS . In addition, compared with other emission methods, there are few spectral line interference, background emission is more stable, small ionization interference, etc.