Oxidation Products of Biogenic Emissions Contribute to Nucleation of Atmospheric Particles
نویسندگان
چکیده
منابع مشابه
Observations of oxidation products above a forest imply biogenic emissions of very reactive compounds
Vertical gradients of mixing ratios of volatile organic compounds have been measured in a Ponderosa pine forest in Central California (38.90 N, 120.63 W, 1315 m). These measurements reveal large quantities of previously unreported oxidation products of short lived biogenic precursors. The emission of biogenic precursors must be in the range of 13–66μmol m−2 h−1 to produce the observed oxidation...
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The emission rate measurements of H2S into the atmosphere from coastal marine sediments were made by the use of an emission flux reactor (chamber) technique under deaerated (gaseous N2) and aerated (ambient air) conditions. The emission rates of H2S varied over a wide range (>0.05 to < 100 gS m-2 yr I ) . The emission of H2S was inversely related to the stage of tidal hydrology, with incoming a...
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سنتز سبز نانوذرات فلزی (nps) درسالهای اخیر توجه بسیارزیادی را به خود جلب کرده است. زیرا این پروتوکل کم هزینه وسازگار با محیط زیست از روش های استاندارد سنتز. در این پایان نامه ما گزارش میکنیم یک روش ساده و سازگار با محیط زیست برای سنتز نانوذرات نقره با استفاده از محلول آبی عصاره گیاه allium iranicum به عنوان یک عامل کاهش دهنده ی طبیعی. نانو ذرات نقره مشخص شد با استفاده از تکنیک های uv-visible، x...
Sensitivity of global biogenic isoprenoid emissions to climate variability and atmospheric CO2
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The catalytic oxidization of CS2 over atmospheric particles and some oxide catalysts was explored through FT-IR, MS and a fixed-bed stainless steel reactor. The results show that atmospheric particles and some oxide catalysts exhibited considerable oxidizing activities for CS2 at ambient temperature. The reaction products are mainly COS and elemental sulfur, even CO2 on some catalysts. Among th...
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ژورنال
عنوان ژورنال: Science
سال: 2014
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.1243527