论文部分内容阅读
本文报告以氟硼酸根离子电极标准比较法测定岩石矿物中的微量(≥5×10~(-4)％)硼。大量的Si~(4+)、Al~(3+)、Ca~(2+)、Mg~(2+)、Fe~(3+)、Ti~(4+)等不干扰,可用酒石酸掩芘铌的干扰。一、分析手续称取试样0.1—1克于30毫升镍坩埚中,加少许乙醇将矿样湿润,加3—8克氢氧化钾(难熔矿样加一克过氧化钠),先在电炉上脱水,然后置于已升温650—700℃马福炉中熔融5—10分钟,取出,冷却后放入塑料杯中,用约40毫升沸水浸取熔块。以2％H_2SO_4
In this paper, trace amounts of boron (≥5 × 10 ~ (-4)%) in rock minerals were determined by the standard comparison method of fluoroborate ion electrode. A large amount of Si 4+, Al 3+, Ca 2+, Mg 2+, Fe 3+ and Ti 4+ can be masked with tartaric acid Perylene niobium interference. First, the analysis procedures Weigh the sample 0.1-1 grams in 30 ml nickel crucible, add a little ethanol to wet the sample, add 3-8 grams of potassium hydroxide (refractory mineral sample plus one gram of sodium peroxide), first in Dehydration on the electric furnace, and then placed in a heated furnace 650-700 ° C melted furnace 5-10 minutes, removed, cooled and placed in a plastic cup, with about 40 ml of boiling water leaching frits. With 2% H 2 SO 4