摘要
本法是在样品中加入适量的缓冲剂,使难发挥元素Be形成易挥发的氟化物,与B、Pb、Mo、Sn、Cu、Ag、Zn等元素在同一时间内蒸发,利用深电孔极的分馏效应,有效地降低光谱背景以及被测元素的检出限。加入内标元素,提高了方法的准确度和精密度。采用深孔电极,取样量大,代表性好。一次摄谱,同时检测多个元素,大大提高了工作效率,又减少了测试费用。方法操作简便,适合于大批量样品的测试。检出限ω(B)/10-6分别达到:Be:0.50、B:0.91、Sn:0.50、Ag:0.02等,均满足《覆盖区多目标地球化学调查样品测试及质量监控暂行规定》规定。
Through putting suitable amount of buffering agent, this method can make the non-volatile element become the volatile fluoride, and evaporate at the same time with elements like B,Pb,Sn,Cu,Ag,Mo,Sn,Zn, etc. By using the effects of deep hole distillation, the method can also effectively lower spectrum background and the detection limit. By adding interior label, the accuracy and precision of this method has been greatly improved. Through using the deep hole electrode, the amount of sampling is in large amoun...
出处
《吉林地质》
2009年第4期146-148,159,共4页
Jilin Geology
关键词
深孔电极
光谱
地质样品
元素检出限
deep hole electrode
spectrum
geological sample
element detection limit
