发射光谱深孔大电极法测定硼、锡、银

以Al2O3、NaF和K2S2O7作为缓冲剂,以Ge为内标,与样品研磨混匀,装入石墨深孔大电极中作为样品电极,石墨电极平头柱形空腔为上电极,样品电极为下电极进行摄谱,由光电译谱仪测定谱线的黑度值。用发射光谱法深孔大电极一次性摄谱,对农业地质样品中硼、锡、银的测定,经过反复实验取得了较好的效果。本法测定了国家一级标准物质,结果与标准值相符。本法灵敏度高,背景浅,能满足多目标地质样品分析的要求。

Determination of boron, tin and silver by emission spectroscopy deep hole, large electrode method

Taking Al2O3, NaF and K2S2O7 as a buffer, taking Ge as the internal standard, mixing samples and filling into the deep hole large electrode as a sample electrode ; the cylindrical cavity of graphite electrode is on the electrode, the sample electrode is under the electrode for spectrography, to determine blackness of spectral line by the photoelectricity interpretative spectrograph. Determined B, Sn, Ag in agriculture geology samples by the emission spectrophotometry; it obtained better result after tested repeatedly. The method shows characteristics of simple, credibility, higher sensitivity and lower detection limit.