在高温和高压下,S3离子在地质流体中稳定
Gleb S Pokrovski1, Leonid S Dubrovinsky
1Géosciences Environnement Toulouse (GET, ex-LMTG), UMR 5563 of CNRS, Université Paul Sabatier, 14, avenue Edouard Belin, F-31400 Toulouse, France. gleb.pokrovski@get.obs-mip.fr
概括
三硫离子 (S3-) 是250°C和0.5 GPa以上地质流体中占主导地位的硫形式,挑战了以前关于硫酸盐和硫化物的假设. 这一发现影响了硫和黄金的运输,需要修改硫同位素模型.
科学领域:
- 地质化学 地质化学
- 矿物学是什么?矿物学是什么?
- 地质地质地质地质地质地
背景情况:
- 地质流体中硫的特异化影响了地球的过程.
- 硫酸盐和硫化物被认为是地流体中主要的硫形式.
- 了解硫的物种化对于经济地质学和地球化学至关重要.
研究的目的:
- 在高温和高压下研究地质流体中硫的主要稳定形式.
- 挑战人们对深层地环境中硫化物种的普遍理解.
- 评估新型硫特异化对元素运输和同位素分离的影响.
主要方法:
- 在现场使用拉曼光谱来分析硫的特异化.
- 实验是在模拟深层地质环境 (高于250°C和0.5GPa) 的条件下进行的.
- 分析的重点是确定溶解硫的化学形式.
主要成果:
- 三硫离子 (S3-) 被确定为250°C以上和0.5GPa的水溶液中占主导地位的稳定形式的硫.
- 这一发现与硫酸盐和硫化物作为主要物种被广泛接受的观点形成鲜明对比.
- 在显著的温度和压力范围内证明了S3-的稳定性.
结论:
- 三硫离子 (S3-) 在地质流体中对硫和黄金的运输和度起着关键作用.
- 它的稳定性影响了变态和潜水带环境中的过程.
- 由于S3-. . 的流行,硫化物和硫酸盐之间的硫同位素分离模型的修订是必要的.
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