极地研究2012，Vol.24Issue(4)：339-345,7.DOI:10.3724/SP.J.1084.2012.00339
南大洋普里兹湾沉积物中生物硅的溶解度研究
THE SOLUBILITY OF BIOGENIC SILICA IN THE SEDIMENT OF PRYDZ BAY,THE SOUTHERN OCEAN
摘要
Abstract
Laboratory-based solubility determinations of biogenic silica were performed in batch reactors on sediments from two cores collected in Prydz Bay,in the Southern Ocean.The results show that the apparent solubility of biogenic silica (BSi) in the top sediments of stations IV-10 and IS-4 were 1 930 μmol · dm-3 and 1 540 μmol o dm" ,respectively,and the solubility decreased with depth in the core.The apparent solubility of BSiwas much higher than the value of an asymptotic concentration (Cd) of dissolved silica(DSi) in pore water.The pore water distributions of DSi record early diagenetic histories that may involve chemical interactions other than the simple dissolution of the deposited BSi.关键词
生物硅/溶解度/沉积物/间隙水/普里兹湾Key words
biogenic silica/solubility/sediment/pore water/Prydz Bay引用本文复制引用
扈传昱,孙维萍,沈忱,张海生..南大洋普里兹湾沉积物中生物硅的溶解度研究[J].极地研究,2012,24(4):339-345,7.基金项目
国家自然科学基金项目(41076134,41206182)、基本科研业务费专项资金项目(JT1009,1208 （41076134,41206182）
JG1217,1218)和南北极环境综合考察与评估专项(CHINARE2012-01-04,CHINARE2012-04-04)资助 （CHINARE2012-01-04,CHINARE2012-04-04）
