物探与化探2012，Vol.36Issue(6)：1064-1067,4.
提高地气探测灵敏度的方法
THE METHOD AND TECHNIQUE FOR IMPROVING THE DETECTION SENSITIVITY OF DYNAMIC GEOGAS SURVEY
摘要
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.关键词
动态地气测量/探测灵敏度/隐伏铀矿/广东长排Key words
dynamic geogas survey/ detection sensitivity/ concealed uranium deposit/ Changpai in Guangdong Province分类
天文与地球科学引用本文复制引用
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):1064-1067,4.基金项目
国家"深部探测技术与实验"专项(Sinoprob-03-01-4C) （Sinoprob-03-01-4C）
国家自然科学基金项目(41074094) （41074094）
四川省教育厅重点科技项目(10ZA118). （10ZA118）
