摘要
本文拟定了用化学光谱法测定痕量Au,取10g样品在650℃灼烧1h后,用王水分解,然后用活性碳纸桨吸附,灰化,装入超浅孔平底电极,压紧,并滴加ZnCl_2溶液粘结,在红外灯下烤干摄谱,曝光7s,检出限为0.08ppb。
A Spectrochemical method for determining trace gold was developed. 10 grams of sample are ignited under 650℃ for 1 hour, dissolved with, aqua regia and filtered. After collecting Au on a columa with, charcoal and filter paper pulp, the charcoal mixture is detached and ashed, then loaded it on an electrode with ultra-shallow cavity. Several drops of ZnCl2 solution are added for adhering and the electrode is dried with an infrared lamp. For spectrographical analysis, 7 second exposure is made and 0.08 ppb detection limit is achieved.
出处
《岩矿测试》
CAS
CSCD
北大核心
1989年第4期303-306,共4页
Rock and Mineral Analysis
