中文摘要：

借助顺序提取技术对西太平洋富钴结壳的铁、锰氧化物进行了分级提取，并利用电感耦合等离子体光谱仪测定了其微量元素的组成。结果表明：锰矿物相（δ-Mn02）主要富集Mn、Ba、Co、Ni、Sr；铁矿物相（FeOOH）富集Fe、As、Cu、Mo、P、Pb，V、Zn。计算了Co、Cu、Ni和Zn元素在铁、锰两相之间的分配系数D=（M／Fe）铁相／（M／Mn）锰相，探讨了其作为古环境替代指标的可行性。发现C0、Cu、Ni和Zn的分配系数与其在富钻结壳中的总质量分数无关，而与海洋生产力存在明显的正相关，其作用机理有待于进一步的研究。

英文摘要：

Sequential leaching technology combined with inductively coupled plasma atomic emission spectroseopy（ICP-AES） was used to analyse cobalt-rich crust from Western Pacific seamounts. The results show that Mn, Ba, Co, Ni, Sr mainly enriched in manganese oxide phase（δ-MnO2）, meanwhile Fe, As, Cu, Mo, P, Pb, V and Zn relatively enriched in iron oxide phase （FeOOH）. Here, the partition coeffi- cient is defined as D = （M/Fe）Fe-phase/（M/Mn）Mn-phase to investigate the distribution characteristics of the trace elements. It is shown that there is a distinct D between hydrogenetic and hydrothermal precipitations. It is also noted that D has no correlation with the metal concentration but a positive correlation with marine primary productivity. Hence, partition coefficient between two major phases may be a potential proxy of paleoenvironment.