CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China.
CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China; Function Laboratory of Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Mar Pollut Bull. 2018 Feb;127:198-206. doi: 10.1016/j.marpolbul.2017.12.011. Epub 2017 Dec 21.
Total contents and chemical speciation of Co, Ni, Cu, Ga, Mo, Cd, In, Sn, Sb, V, W, Tl, Bi and U in size-fractionated (<32, 32-63 and >63μm) core sediments from Jiaozhou Bay were investigated to reveal their responses to anthropogenic activities. Metal contents showed a decreasing trend with increasing grain sizes. However, the loadings of metal fraction on <32, 32-63 and >63μm grain sizes were 16%, 47% and 37%, respectively. Anthropogenic fluxes and enrichment factors of metals in >63μm fraction were closely linked to anthropogenic activities, with an obvious increase in upper 27cm (1998-2015) and a slight decrease in 2009year. Metals (especially for Cd, Co, Cu and Ni) in >63μm fraction were more easily released, with the highest percentage of acid soluble form and lowest residual form. Thus, the size fraction of >63μm cannot be ignored.
对胶州湾柱状沉积物中不同粒级(<32、32-63 和 >63μm)的 Co、Ni、Cu、Ga、Mo、Cd、In、Sn、Sb、V、W、Tl、Bi 和 U 的总量及化学形态进行了研究，以揭示其对人为活动的响应。金属含量随粒径增大呈下降趋势。然而，<32、32-63 和 >63μm 粒级上金属分馏的负荷分别为 16%、47%和 37%。>63μm 粒级上金属的人为通量和富集因子与人为活动密切相关，在上部 27cm 内(1998-2015 年)明显增加，在 2009 年略有减少。>63μm 粒级上的金属(尤其是 Cd、Co、Cu 和 Ni)更容易释放，酸可溶态的比例最高，残渣态的比例最低。因此，不能忽视 >63μm 的粒级。
