Abstract：In view of the uranium prospecting characteristics in Changpai uranium exploration area of Guangdong Province, such as low ore grade, small ore body, and great depth, the authors employed improved dynamic geogas survey. During sampling, a couple of capturing agents were serially connected. On the basis of the premise of stationary sampling time, the sampling quantity of geogas was improved by approximately 50%. Before ICP-MS analysis, all geogas samples were concentrated from 40 mL to 5 mL, which improved the element concentrations in samples by 3~11 times. On the basis of this improvement, the elements with lower concentrations in geogas could be easily detected, and the analycial error was reduced effectively. The experimental results show that the improved measures can result in higher detection sensitivity of dynamic geogas survey and can further improve the prospecting effect of geogas survey.
刘晓辉, 周四春, 童纯菡, 胡波. 提高地气探测灵敏度的方法[J]. 物探与化探, 2012, 36(6): 1064-1067.
LIU Xiao-hui, ZHOU Si-chun, TONG Chun-han, HU Bo. THE METHOD AND TECHNIQUE FOR IMPROVING THE DETECTION SENSITIVITY OF DYNAMIC GEOGAS SURVEY. Geophysical and Geochemical Exploration, 2012, 36(6): 1064-1067.
