| 铷、锶、钡无火焰原子吸收法测定 |
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| 引用本文：李家熙,郑尧,颜茂弦,林猷璧.1982.铷、锶、钡无火焰原子吸收法测定[J].地球学报,4(1):95-101. |
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| 中文摘要:<正> 马坑铁矿赋存于石炭—二叠纪合火山岩的碳酸盐岩—碎屑岩建造的地层中,由辉绿岩和大理岩在火山气热液作用下形成含矽卡岩矿物组合的磁铁矿床。这类铁矿分布较广,是一个重要的矿床类型。为了探索这类矿床形成的温度、压力和介质环境,我们继《福建马坑矽卡岩分带的模拟实验》之后,采用马坑天然辉绿岩和大理岩作为试料,对该矿床形成的温度和压力进行了初步的实验研究。 |
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| DETERMINATION OF TRACES OF RUBIDIUM,STROTIUM AND BARIUM IN ORES AND MINERALS |
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| Abstract:Determination of Traces of Rubidium, Strotium and Barium in Ores andMinerals. The sample is decomposed with hydrofluoric and perchloric acids, andthe solution is evaporated to dryness. The salts are dissolved in dilute nitricacid and a portion of the resulting solution is used to determine Ba.Anotherportion is used to determine Sr and Rb. Ascorbic acid is added to remove chloride anion in the form of volatileHCl, thus avoiding loss of volatile RbCl. The use of a pyrolytic graphite tubeatomizer and methaneargon as internal gas to prevent the formation of metal oxide has producced enhancement in sensitivity. The sensitivity of this method. Rb/1% absorption 1.1×10-11g; Sr/1% absorption 5.8×10-12g; Ba/1% absorption 5.5×10-11g. |
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