南海冷渗沉积物的地球化学特征、稳定同位素组成和微生物速率

我们测定地球化学特性甲烷、硫酸盐、溶解无机碳（DIC）、δ^{δ 13}C的DIC、总有机碳（TOCδ¹³C的TOC、硫化物、酸性挥发性硫（AVS）、铬还原硫（CRS）和活性Fe的 硫同位素特征（δ³⁴硫酸盐、AVS和CRS的S）以及南海冷渗沉积物中硫酸盐还原率（SR）和甲烷厌氧氧化率（AOM）。 的F地（22°06.922'N<i>'</i>;119°17.130'E<i>'</i>上的一次考察中，在南海（SCS）东北坡<i>东方红3号”（Dongfanghong 3</i> 2022年5月。 进行放射性示踪剂测定以确定 SR 和 AOM 的速率。

We determined various geochemical parameters and reaction rates: methane, sulfate, dissolved inorganic carbon (DIC), δ¹³C of DIC, total organic carbon (TOC), δ¹³C of TOC, sulfides, acid volatile sulfide (AVS), chromium reducible sulfur (CRS), reactive Fe, and their sulfur isotopic signatures (specifically δ³⁴S for sulfate, AVS and CRS), as well as sulfate reduction rate (SR) and anaerobic oxidation of methane (AOM) in cold seep sediments from the South China Sea (SCS). During a research cruise in May 2022 aboard the research vessel R/V Dongfanghong 3, we conducted radiotracer measurements to quantify SR and AOM at a sampling station located on the northeastern slope of the South China Sea, with coordinates 22°06.922'N, 119°17.130'E.