月岩（70017-291）的火花源质谱分析

月岩、陨石及地球岩石样品的元素组成和分布的研究,特别是微量元素含量的测定,对探索天体的形成和演化有一定意义。但由于这类样品的组成比较复杂,要精确和快速测定样品中微量元素含量尚有一定困难。中子活化法具有灵敏度高和误差较小等优点,火花源质谱法在灵敏度和多元素分析等方面与活化分析相似,但与前者相比,后者费用     

吉林陨石锂同位素相对丰度的初步探讨

陨石、地球、太阳、恒星和宇宙线中锂同位素组成的对比研究,不仅可为阐明太阳系锂的起源提供一定依据,而且对于了解太阳系历史中的天然核作用过程和天体化学过程也具有一定价值。 各类陨石的锂同位素组成,已用经典质谱法、二次离子质谱法和热离子质谱法进行了研究。经典质谱法与热离子质谱法的结果表明,石陨石的锂同位素组成在实验     

几块铁陨石的火花源质谱分析

Iron meteorites from Nandan, Guangxi ; Wushike, Xinjiang; Shangdu, Hebei and Huangling, Hubei are investigated with a spark souree mass speetrometer for their Cr, Ni, Co, Cu, Zn, Ga, Ge, As, Mo, Ru, Rh, Pd, Os and Ir contents. The accuracy of the results and the factors affecting it are discussed. It is preliminarily concluded,while textural evidences of these meteorites are also taken into account, that the Nandan, Wushike and Shangdu meteorites belong to IA, Ⅲ .4 and ⅢE groups respectively. The Ni, Ga and Ge contents in the Huangling iron meteorite come close to that of mesosiderites.