This paper discusses the application of a spectrochemical method proposed by the authors, for the determination of ultratrace gold in regional geochemical reconnaissance including the supervisory control over sample preparation and analytical quality, and the precautions in operation. The absolute sensitivity of the method is 1 ng, sample weight being 10g.The coefficient of variation is 20-27% on determining o.n-n.10ppb of gold. Two thousand samples of various types have been taken for analysis. The 1142 stream sediment samples and 220 rock samples have furnished important information concerning the distribution of gold.
蒋建华, 陈方伦, 马重光. 化学光谱法测定超痕量金及其在区域化探工作中的应用[J]. 物探与化探, 1984, 8(2): 80-88.
Jiang Jianhua, Chen Fanglun, Ma Chongguang. A SPECTROCHEMICAL METHOD FOR THE DETERMINATIONOF ULTRATRACE GOLD AND ITS APPLICATIONIN THE REGIONAL GEOCHEMICAL SURVEY. Geophysical and Geochemical Exploration, 1984, 8(2): 80-88.