کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5752511 1620207 2017 11 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Tracing nitrogen cycling in mining waters using stable nitrogen isotope analysis
ترجمه فارسی عنوان
ردیابی دوچرخه سواری نیتروژن در آبهای معدنی با استفاده از تجزیه و تحلیل ایزوتوپ پایدار نیتروژن
کلمات کلیدی
نیتروژن، معدن، نیتروژن دوچرخه سواری، ایزوتوپها، ردیابی، ژئوشیمی ایزوتوپ، ایزوتوپهای نیتروژن پایدار، ایزوتوپهای اسیاب پایدار، فرآیند آب، کرنا،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی


- Using stable nitrogen and oxygen isotopes to trace and quantify nitrogen sources.
- Tracing nitrogen cycling processes using nitrogen and oxygen isotopes.
- Using tritium to date two different nitrogen containing mine waters.

We show how we used stable nitrogen and oxygen isotopes in ammonium and nitrate to identify and quantify nitrogen transformation and nitrogen sources at the LKAB mining site in northern Sweden. Stable nitrogen isotope analysis worked as an excellent tool for tracing nitrogen cycling in rapidly moving process waters. The isotope analysis was performed on the mining process waters at seven different key points along the water flow and we identified nitrification, ammonia volatilisation, and ammonium adsorption as nitrogen transformation processes. The source of nitrogen is historically explained as undetonated ammonium-nitrate based explosives. We used nitrate nitrogen and oxygen isotopes to quantify four nitrogen sources in the accumulated water in the mine as well as three sources in an above ground process water reservoir. The nitrate isotope data showed that most of the nitrate (70-80%) in the accumulated water underground originated from a sampling point located close to the surface and only a minor fraction (5-20%) originated directly from undetonated explosives (direct dissolution of NH4NO3 and nitrification of NH4). Nitrate from natural groundwater formed roughly 12% of mine water nitrate. In the above ground process water reservoir isotope data indicated another source of nitrogen coming from undetonated explosives.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Geochemistry - Volume 84, September 2017, Pages 41-51
نویسندگان
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