The chemical fractionation of ten metals (Al, Ti, Cr, Fe, Cd, Cu, Mn, Pb, Zn and Ni) is reported for a marine sediment collected in the Joides Basin, Ross Sea, Antarctica. To evaluate their mobility and availability, the BCR sequential extraction procedure was applied on 11 sections of the sediment. The analyses, performed both by ICP-OES and GF-AAS, highlighted that most of the elements were in the residual phase, showing a strong binding with the matrix and a low availability. The BCR sequential procedure allowed us to have an insight into the chemical properties of the sediment and provided useful information about the redox state of the sediment itself and important indication on the availability and partitioning of different metals. A chemometric treatment was applied on the dataset and it showed a separation between the superficial and the deep sections of the core, the first being more influenced by the presence of Mn and the second by an increase in Al, Ti, Fe, Cr and Pb concentrations.

据报道，在南极洲罗斯海的乔德斯盆地收集的海洋沉积物中，有十种金属（铝，钛，铬，铁，镉，铜，锰，铅，锌和镍）的化学分馏。为了评估其流动性和有效性，对沉积物的11个部分进行了BCR顺序提取程序。由ICP-OES和GF-AAS进行的分析强调，大多数元素处于残留相，显示与基质的结合力强且可用性低。BCR顺序程序使我们能够洞悉沉积物的化学性质，并提供有关沉积物本身的氧化还原状态的有用信息，以及有关不同金属的有效性和分配的重要指示。