摘要
根据敏感性分析原理,导出探测下限敏感性分析公式,分析探测下限与探测效率、采样体积、谱仪系统本底以及测量时间的敏感性,表明采样体积敏感性最高、谱仪本底敏感性次之、探测效率和测量时间敏感性相同且最低。实际工作中可以采用压制样品减小样品高度方式来有效降低探测下限。
According to the principle of sensitivity analysis,a formula for sensitivity analysis of detection limit is derived.Through analysis of the sensitivity of detection limit and detection efficiency,sample volume,the background of the spectrometer system and the time of measurement,it shows that the sampling volume has the highest sensitivity,the background of the spectrometer system takes the second place,the detection efficiency and the measurement time has the same lowest sensitivity. In the practical work,we can reduce the detection limit by reducing the sample height.
出处
《四川环境》
2016年第2期32-37,共6页
Sichuan Environment
关键词
敏感性
探测下限
探测效率
采用体积
测量时间
Sensitivity
detection limit
detection efficiency
sample volume
measurement time
