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选择光源时应尽量满足的要求
选择光源时应尽量满足的要求：
We should try our best to meet the requirements when choosing light source.
1.高灵敏度，随着样品中元素浓度微小变化，其检出的信号有较大的变化；
1. high sensitivity, with the slight change of the element concentration in the sample, the detected signal has a great change.
2.低检出限，能对微量及痕量成分进行检验；
2. low detection limit, which can detect trace and trace components.
3.良好的稳定性，试样能稳定的蒸发、原子化和激发，使结果具有较高的精密度：
3. Good stability, sample can be stable evaporation, atomization and excitation, so that the results have high precision:
4.谱线强度与背景强度之比大(信噪比大)；
4. the ratio of spectral line intensity to background intensity is large (signal-to-noise ratio).
5. 分析速度快，预燃时间短；
5. the analysis speed is fast and the pre combustion time is short.
6.构造简单，容易操作，安全；
6. the construction is simple, easy to operate and safe.
7.自吸收效应小，校准曲线的线性范围宽。
7. the self absorption effect is small, and the calibration curve has a wide linear range.
