کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4453825 1620813 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heterogeneous uptake of gaseous hydrogen peroxide on mineral dust
ترجمه فارسی عنوان
جذب هیدروژن پراکسید هیدروژن بر گرد و غبار معدنی
کلمات کلیدی
آب اکسیژنه، گرد و غبار معدنی، جذب نامتقارن، ضریب جذب
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
چکیده انگلیسی

The heterogeneous uptake processes of hydrogen peroxide on Arizona test dust and two types of authentic Chinese mineral dusts, i.e., Inner Mongolia desert dust and Xinjiang calciferous dust, were investigated using a Knudsen cell reactor coupled with a quadrupole mass spectrometer. The uptake coefficients were measured as a function of the initial concentration of H2O2 from 2.6 × 1011 to 1.2 × 1012 molecules/cm3, and the temperature dependence of the uptake coefficients was investigated over a range from 253 to 313 K. The concentration of H2O2 showed little effect on the uptake coefficients of these heterogeneous processes. As a function of temperature, the initial uptake coefficients decrease with increasing temperature, whereas the steady state uptake coefficients of Arizona test dust and Inner Mongolia desert dust increase with increasing temperature. Implications for the understanding of the uptake processes onto mineral dust samples were also discussed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Sciences - Volume 40, February 2016, Pages 44–50
نویسندگان
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