电荷注入检测器-端视等离子体原子发射光谱中分析动态范围

Analytical Dynamic Range in Atomic Emission Spectrometry With Axially Viewed Plasma and Charge Injection Array Detector

实验研究了电荷注入检测器（ＣＩＤ）－端视电感耦合等离子体（ＡＶＩＣＰ）光谱中分析动态范围，测量了Ａｌ、Ｂ、Ｂｅ、Ｃｄ、Ｃｕ、Ｃｏ、Ｆｅ、Ｌｉ、Ｓｒ、Ｖ、Ｋ、Ｓｒ等１２个元素的不同光谱级次的４４条分析工作曲线。结果表明，分析动态范围为４～５个数量级，无明显自吸收，Ｌｏｍａｋｉｎ公式的自吸收系数ｂ＝１，说明在ＣＩＤ－ＡＶＩＣＰ光谱中有较宽的分析动态范围。

In this paper the analytical linear ranges of calibration graphs for a new type emission spectrometer with two dimensional charge injection detector and axially viewed plasma were investigated. Calibration graphs for Al, Cd, Cu, Co, Fe, Li, Sr, V, K, Sr, Be, B in different spectral order were examined. The results showed that linear ranges are over four orders of magnitude and no self-reversal or self-absorption is found under concentration at 100-1000 mg/L. The self-absorption coefficient b for Lomakin equation has been determinad and the value is approximately equal to 1.