کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6438459 | 1638015 | 2014 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distribution and size fractionation of elemental sulfur in aqueous environments: The Chesapeake Bay and Mid-Atlantic Ridge
ترجمه فارسی عنوان
توزیع و اندازه کسرکردن گوگرد عنصری در محیط های آبی: خلیج چیساپیک و رید میانی آتلانتیک
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کلمات کلیدی
EDXCRSMARCTDROVAVsAcid volatile sulfidesZVSremotely operated vehicle - از راه دور وسیله نقلیهEnergy Dispersive X-ray Spectroscopy - اشعه ماوراء بنفش اشعه ایکسTAG یا triacylglycerols - تری گلیسرید یا تری آسیل گلیسرولSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیMid-Atlantic Ridge - میانه اقیانوس اطلس ریجScanning electron microscopy - میکروسکوپ الکترونی روبشی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
Elemental sulfur is an important intermediate of sulfide oxidation and may be produced via abiotic and biotic pathways. In this study the concentration and size fractionation of elemental sulfur were measured in two different sulfidic marine environments: the Chesapeake Bay and buoyant hydrothermal vent plumes along the Mid-Atlantic Ridge. Nanoparticulate sulfur (<0.2 μm) was found to comprise up to 90% of the total elemental sulfur in anoxic deep waters of the Chesapeake Bay. These data were compared with previous studies of elemental sulfur, and represent one of the few reports of nanoparticulate elemental sulfur in the environment. Additionally, a strain of phototrophic sulfide oxidizing bacteria isolated from the Chesapeake Bay was shown to produce elemental sulfur as a product of sulfide oxidation. Elemental sulfur concentrations are also presented from buoyant hydrothermal vent plumes located along the Mid-Atlantic Ridge. In the Mid-Atlantic Ridge plume, S0 concentrations up to 33 μM were measured in the first meter of rising plumes at three different vent sites, and nanoparticulate S0 was up to 44% of total elemental sulfur present.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geochimica et Cosmochimica Acta - Volume 142, 1 October 2014, Pages 334-348
Journal: Geochimica et Cosmochimica Acta - Volume 142, 1 October 2014, Pages 334-348
نویسندگان
Alyssa J. Findlay, Amy Gartman, Daniel J. MacDonald, Thomas E. Hanson, Timothy J. Shaw, George W. III,