摘要
<正>V属于第四周期过渡族金属元素,在自然界中具有多种价态(+2,+3,+4,+5),对氧化还原条件十分敏感。已有研究者利用V元素分配与氧逸度的关系,来研究地幔氧逸度随时空的演化,以及制约俯冲带的氧化还原条件[1]。V有两个稳定同位素(~(50)V和~(51)V,相对丰度为0.24%和99.76%),理论和实验工作表明氧化还原状态的改变能够使变价元素产生同位素分馏,因此V同位素在示踪地幔和
引文
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