摘要
根据在中国几个省系统采集的3184个岩石样品的409个组合样和均匀分布在四个海域的210个浅海沉积物样品的中子活化分析结果,及几个省区七个1:20万图幅7784个水系沉积物组合样的无火焰原子吸收和化学光谱的结果,经统计处理,求得金的近似丰度值:中国大陆上地壳(岩浆岩)0.6ppb,酸性岩0.45ppb,沉积岩0.7ppb,水系沉积物1.1Ppb,浅海沉积物1.1 ppb。
Based on the statistical data on 409 rock samples, 210 shallow-sea sediment samples and 7784 drainage sediment samples, the approximate abundances of gold are 0.6 ppb in the upper crust (or magmatic rocks), 0.45 ppb in acidic rocks, 0.7 ppb in sedimentary rocks, 1.1 ppb in drainage sediments and 1.1 ppb in shallow-sea sediments in China, respectively.Gold abundances have been determined by Neutron Activation Analysis in rocks collected from some provinces and in well-distributed shallow-sea sediments collected from the Chinese sea areas, and those by Non-flame Atomic Absorption Spectrometry and Chemical Emission Spect-rography in drainage sediments collected from several provinces.
出处
《地球化学》
CAS
CSCD
北大核心
1990年第2期144-152,共9页
Geochimica
