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温度和压力对瓜伊马斯盆地热液沉积物中硫酸盐还原及甲烷厌氧氧化的影响

Effects of temperature and pressure on sulfate reduction and anaerobic oxidation of methane in hydrothermal sediments of Guaymas Basin.

作者信息

Kallmeyer Jens, Boetius Antje

机构信息

Max Planck Institute for Marine Microbiology, 28359 Bremen, Germany.

出版信息

Appl Environ Microbiol. 2004 Feb;70(2):1231-3. doi: 10.1128/AEM.70.2.1231-1233.2004.

Abstract

Rates of sulfate reduction (SR) and anaerobic oxidation of methane (AOM) in hydrothermal deep-sea sediments from Guaymas Basin were measured at temperatures of 5 to 200 degrees C and pressures of 1 x 10(5), 2.2 x 10(7), and 4.5 x 10(7) Pa. A maximum SR of several micromoles per cubic centimeter per day was found at between 60 and 95 degrees C and 2.2 x 10(7) and 4.5 x 10(7) Pa. Maximal AOM was observed at 35 to 90 degrees C but generally accounted for less than 5% of SR.

摘要

在瓜伊马斯海盆热液深海沉积物中,于5至200摄氏度的温度以及1×10⁵、2.2×10⁷和4.5×10⁷帕的压力下,测量了硫酸盐还原(SR)速率和甲烷厌氧氧化(AOM)速率。在60至95摄氏度以及2.2×10⁷和4.5×10⁷帕的条件下,发现最大硫酸盐还原速率为每天每立方厘米几微摩尔。在35至90摄氏度观察到最大甲烷厌氧氧化速率,但通常占硫酸盐还原速率不到5%。

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