极地研究 ›› 2013, Vol. 25 ›› Issue (2): 105-112.DOI: 10.3724/SP.J.1084.2013.00105

• 研究论文 •    下一篇

南大洋普里兹湾沉积物中锗的含量与分布

沈忱1  扈传昱1,2  孙维萍张海生1,2   

  1. 1国家海洋局海洋生态系统与生物地球化学重点实验室,浙江 杭州 310012; 2中国地质大学资源学院,湖北武汉 430074
  • 收稿日期:2012-10-15 修回日期:2013-01-28 出版日期:2013-06-30 发布日期:2013-06-30
  • 通讯作者: 扈传昱

SPATIAL DISTRIBUTION OF GE IN THE SEDIMENTS OF PRYDZ BAY, SOUTHERN OCEAN

Shen Chen1,Hu Chuanyu1,2,Sun Weiping1,Zhang Haisheng1,2   

  1. 1Lab of Marine Ecosystem and Biogeochemistry, SOA,Second Institute of Oceanography, SOA, Hangzhou 310012, China; 2 China University of Geosciences, Wuhan 430074, China
  • Received:2012-10-15 Revised:2013-01-28 Online:2013-06-30 Published:2013-06-30

摘要: 本文利用中国第21-27次南极考察期间获得的沉积物样品,对南大洋普里兹湾沉积物中锗(Ge)的含量以及分布特征进行了初步研究。结果表明:普里兹湾表层沉积物中总Ge(Getotal)的含量在1.14×10-6~2.35×10-6之间变化,平均含量为1.71×10-6,最高值出现在湾外深海区P3-9站,最低值出现在湾内冰架边缘附近的P4-13站。在研究海域表层沉积物中生源Ge(Gebio)占Getotal的百分含量在16-68%之间变化。在表层沉积物中Gebio与Getotal分布变化趋势总体上相近,以67°S为界均呈现湾外高于湾内的趋势,在柱状沉积物中Ge的垂向分布呈现表层高于底层趋势。在普里兹湾湾内非冰间湖区域的表层沉积物中Gebio与生物硅(BSiO2)呈现一定的正相关,在P3-16站位柱状沉积物中Gebio与BSiO2垂向分布相似。

关键词: 锗, 沉积物, 普里兹湾, 南大洋

Abstract: The spatial distribution and concentration of Germanium (Ge) was investigated in sediments from the Southern Ocean (Prydz Bay). The content of Getotal in surface sediments ranged from 1.14×10-6—2.35×10-6, with a mean of 1.71×10-6. The highest Getotal content was found in P3-9 station, which was in the deeper open sea area out of the Prydz Bay. The lowest Getotal was recorded at the P4-13 station, which was near the edge of the Amery ice shelf. In the surface sediments, Gebio accounted for 16%—68% of Getotal.Spatially,Gebio and Getotal had similar distribution patterns, with higher values recorded outside, and lower contents in the south area of 67°S. The vertical distribution of Ge decreased with depth  in the core sediments. In the surface sediments outside of the Polynyas, there was a positive correlation between Gebio and biogenic silica(BSiO2). Specifically, the depth profiles of Gebio and BSiO2 were similar in the sediments from the P3-16 station.

Key words: Ge, sediment, Prydz Bay, Southern Ocean