Sources, Fates, and Geochemical Cycling of Mercury in Geothermal Fields: Insights From Mercury Isotopes

التفاصيل البيبلوغرافية
العنوان:	Sources, Fates, and Geochemical Cycling of Mercury in Geothermal Fields: Insights From Mercury Isotopes
المؤلفون:	Fei Pan, Jen‐How Huang, Xinbin Feng
المصدر:	Geophysical Research Letters, Vol 51, Iss 9, Pp n/a-n/a (2024)
بيانات النشر:	Wiley, 2024.
سنة النشر:	2024
المجموعة:	LCC:Geophysics. Cosmic physics
مصطلحات موضوعية:	Geophysics. Cosmic physics, QC801-809
الوصف:	Abstract Geothermal fields emit remarkable amounts of mercury (Hg) to the environment. To address the source, fate and geochemical cycling of Hg in geothermal fields, we investigated Hg concentrations and isotopic compositions of hot spring water and fumarole gases from Rehai and Dagejia in SW‐China. Elevated Hg concentrations in fumarole gases (10.0–167 ng m−3) and hot spring water (3.44–84.5 ng L−1) were observed, suggesting that both geothermal fields are of environmental concern. The variation in Δ199Hg (−0.06 to 0.23‰) and Δ200Hg (−0.09 to 0.19‰) in hot spring water supports Hg likely originating from endogenous volcanic degassing and/or rainwater. Negative and nearly zero Δ199Hg in fumarole gases (−0.32 to 0.03‰) supports volcanic degassing and background atmosphere origin. The ranges of δ202Hg in fumarole gases (−0.74 to 0.59‰) and hot spring water (−1.29 to 0.52‰) could reflect limited fluids boiling in geothermal fields. This study, thus, fills an important knowledge gap regarding Hg global cycling.
نوع الوثيقة:	article
وصف الملف:	electronic resource
اللغة:	English
تدمد:	1944-8007 0094-8276
Relation:	https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007
DOI:	10.1029/2023GL107384
URL الوصول:	https://doaj.org/article/9dc539df07f8461b801c82ba535da5ff
رقم الانضمام:	edsdoj.9dc539df07f8461b801c82ba535da5ff
قاعدة البيانات:	Directory of Open Access Journals

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الوصف
تدمد:	19448007 00948276
DOI:	10.1029/2023GL107384