Characterization of high molecular weight compounds in urban atmospheric particles
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چکیده
منابع مشابه
Characterization of high molecular weight compounds in urban atmospheric particles
The chemical nature of a large mass fraction of ambient organic aerosol particles is not known. High molecular weight compounds (often named humic-like substances) have recently been detected by several authors and these compounds seem to account for a significant fraction of the total organic aerosol mass. Due to the unknown chemical structure of these compounds quantification as well as a det...
متن کاملHigh molecular weight compounds in urban atmospheric particles
High molecular weight compounds in urban atmospheric particles V. Samburova et al. High molecular weight compounds in urban atmospheric particles V. Samburova et al. Abstract The chemical nature of a large fraction of ambient organic aerosol particles is not known. However, high molecular weight compounds (often named humic-like substances) have recently been detected by several authors and the...
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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...
Seasonal variation of high-molecular-weight compounds in the water-soluble fraction of organic urban aerosols
[1] Aerosol samples were collected in Zurich, Switzerland, at an urban background site and were analyzed with size exclusion chromatography (SEC) and laser/desorption ionization mass spectrometry (LDI-MS) for water-soluble organic compounds with high molecular weight. Daily samples were collected during two campaigns in winter and summer, for 1 month each. The concentration of high-molecular-we...
متن کاملDiffusion of high molecular weight compounds through sclera.
PURPOSE To determine the in vitro permeability of the sclera to high molecular weight compounds and the relationship between scleral permeability and molecular size. METHODS Fresh rabbit sclera was mounted in a two-chamber diffusion apparatus, and its permeability to sodium fluorescein, fluorescein isothiocyanate (FITC)-conjugated bovine serum albumin, FITC-IgG, and FITC dextrans ranging in m...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2005
ISSN: 1680-7324
DOI: 10.5194/acp-5-2163-2005