Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-4369-2017 |
Hygroscopic properties of aminium sulfate aerosols | |
Rovelli, Grazia1,2; Miles, Rachael E. H.1; Reid, Jonathan P.1; Clegg, Simon L.3 | |
2017-03-31 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Italy |
英文摘要 | Alkylaminium sulfates originate from the neutralisation reaction between short-chained amines and sulfuric acid and have been detected in atmospheric aerosol particles. Their physicochemical behaviour is less well characterised than their inorganic equivalent, ammonium sulfate, even though they play a role in atmospheric processes such as the nucleation and growth of new particles and cloud droplet formation. In this work, a comparative evaporation kinetics experimental technique using a cylindrical electrodynamic balance is applied to determine the hygroscopic properties of six short-chained alkylaminium sulfates, specifically mono-, di-, and tri-methylaminium sulfate and mono-, di-, and triethyl aminium sulfate. This approach allows for the retrieval of a water-activity-dependent growth curve in less than 10 s, avoiding the uncertainties that can arise from the volatilisation of semi-volatile components. Measurements are made on particles > 5 mu m in radius, avoiding the need to correct equilibrium measurements for droplet-surface curvature with assumed values of the droplet-surface tension. Variations in equilibrium solution droplet composition with varying water activity are reported over the range 0.5 to > 0.98, along with accurate parameterisations of solution density and refractive index. The uncertainties in water activities associated with the hygroscopicity measurements are typically < +/- 0.2% at water activities > 0.9 and similar to +/- 1% below 0.9, with maximum uncertainties in diameter growth factors of +/- 0.7 %. Comparison with previously reported measurements show deviation across the entire water activity range. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397942500001 |
WOS关键词 | SULFURIC-ACID ; AQUEOUS-SOLUTIONS ; ORGANIC AEROSOL ; ATMOSPHERIC NANOPARTICLES ; ALKYLAMINIUM SULFATES ; THERMODYNAMIC MODEL ; GAS-CHROMATOGRAPHY ; RELATIVE-HUMIDITY ; PHASE-SEPARATION ; REFRACTIVE-INDEX |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26223 |
专题 | 地球科学 |
作者单位 | 1.Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England; 2.Univ Milano Bicocca, Dept Earth & Environm Sci, I-20124 Milan, Italy; 3.Univ East Anglia, Sch Environm Sci, Norwich NR4 7TJ, Norfolk, England |
推荐引用方式 GB/T 7714 | Rovelli, Grazia,Miles, Rachael E. H.,Reid, Jonathan P.,et al. Hygroscopic properties of aminium sulfate aerosols[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(6). |
APA | Rovelli, Grazia,Miles, Rachael E. H.,Reid, Jonathan P.,&Clegg, Simon L..(2017).Hygroscopic properties of aminium sulfate aerosols.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(6). |
MLA | Rovelli, Grazia,et al."Hygroscopic properties of aminium sulfate aerosols".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.6(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论