Abstract：
We investigated the influence of the intertidal geothermal hot spring (GHS) on the biogeochemistry of trace elements in Santispac Bight, Bahía Concepción (Gulf of California). The geothermal fluids were enriched in As and Hg mainly in ionic form. The suspended particulate matter of the GHS had elevated enrichment factor (EF) >1 of As, Bi, Cd, Co, Cu, Mn, Mo, Sb, Sn, Sr, Ti, U and Zn. The sediment core from GHS1 had high concentration of As, Hg, Corg, S, V, Mo, and U and the extremely high EF of these elements at 8cm of the core. The maximum bioaccumulation of As and Hg was in seaweeds Sargassum sinicola collected near the GHS2. The results confirm the input of trace elements to the coastal zone in Bahía Concepción from geothermal fluids and the evident modification of the chemical composition of the adjacent marine environment.
摘要：
我们研究了潮间带地热温泉（GHS）对SantispacBight中微量元素生物地球化学的影响，巴伊亚·康塞普西翁（加利福尼亚湾）。地热流体主要以离子形式富集砷和汞。GHS的悬浮颗粒物具有升高的As富集因子(EF)>1，Bi,Cd,Co,Cu,Mn,Mo,Sb,Sn,Sr,Ti,U和Zn。来自GHS1的沉积物岩心含有高浓度的砷，Hg,Corg,S,V,Mo,和U以及这些元素在核心8cm处的极高EF。As和Hg的最大生物积累是在GHS2附近收集的海藻Sargessumsinicola中。结果证实了地热流体向巴伊亚康塞普西翁沿海地区的微量元素输入以及邻近海洋环境的化学成分的明显改变。
