摘要
本法为垂直电极直接燃烧法，在1m光栅摄谱仪上进行摄谱，以交流电弧为光源。为了避免对银的沾污，不用缓冲剂，而采用缓冲液及国家一、二级地质标准样作为标准。不用内标元素，以分析线旁的空白处调零，测量分析线的黑度值进行分析。从实验结果表明本法的检出限．精密度。准确度都能满足1：5万化探扫面的要求。测定范围银为0．048-3．2ppm。锡为0．84-100ppm。
The method is a vertical electrode direct combustion method. The spectrum is taken on a grating spectrograph which is 1 m long and the light comes from arc exchange. In order to avoid contamination of the silver, buffer solution is tised in place of buffer agent and the national 1 ＆ 2 geological criteria samples are set as standard. Internal standard elements are not used while the zero region is set to the blank area of the analysis line, and the analysis is based on the blackness value of the analysis line. The experimental results show that the detection limit, precision and accuracy from the method can meet the scanning surface requirement of 1：50000 geochemical. Measurement range： silver 0.048-3.2 ppm. Tin： 0.84-100 ppm.
出处
《广东化工》
CAS
2011年第7期280-281,共2页
Guangdong Chemical Industry
关键词
发射光谱
缓冲液
银和锡
emission spectra
buffer
silver and tin
