Chemical composition of ferromanganese nodules from a core taken in the vicin...

Ferromanganese nodules were retrieved at different levels inside a core taken in the vicinity of the Hawaiian Islands. Total iron contents were determined by the bichromate...铁锰结核（Ferromanganese nodules）采自夏威夷群岛附近获取的沉积岩芯的不同深度层位内。总铁含量采用重铬酸盐法进行测定……