Report
Measurements of HO2 uptake coefficient on aqueous (NH4)(2)SO4 aerosol using aerosol flow tube with LIF system
| العنوان: | Measurements of HO2 uptake coefficient on aqueous (NH4)(2)SO4 aerosol using aerosol flow tube with LIF system |
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| المؤلفون: | Zou, Qi, Song, Huan, Tang, Mingjin, Lu, Keding |
| بيانات النشر: | ELSEVIER SCIENCE INC |
| سنة النشر: | 2019 |
| المجموعة: | Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) / 中国科学院广州地球化学研究所机构知识库 |
| مصطلحات موضوعية: | Chemistry, Heterogeneous reaction, HO2 uptake coefficient, Aerosol flow tube, Laser induced fluorescence, Transition metal ion, Multidisciplinary, LASER-INDUCED FLUORESCENCE, TROPOSPHERIC OH RADICALS, MASS ACCOMMODATION, HETEROGENEOUS REACTIONS, MODEL-CALCULATIONS, CARBON-MONOXIDE, RURAL SITE, PARTICLES, PHOTOCHEMISTRY |
| الوصف: | Laboratory studies of HO2 uptake coefficients, gamma(HO2), were conducted at room temperature using an aerosol flow tube coupled with a laser induced fluorescence (LIF) system. The measurement was conducted with atmospherically relevant HO2 concentrations (similar to 1 x 10(9) molecule/cm(3)) at 51% RH. The measured gamma(HO2) onto aqueous (NH4)(2)SO4 aerosol was 0.001 +/- 0.0007, which was consistent with the relatively low first-order loss rate of HO2 onto aqueous (NH4)(2)SO4 aerosol. The gamma(HO2) was elevated with increase of Cu(II) concentrations in aqueous (NH4)(2)SO4 aerosol. The threshold of Cu(II) concentration was 10(-3) mol/L for the dramatic increase of gamma(HO2). It was found that gamma(HO2) reached 0.1 when Cu(II) concentration in aerosol was larger than 10(-3) mol/L, suggesting that gamma(HO2) is very sensitive to concentration of transition metal ions in aerosol. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved. |
| نوع الوثيقة: | report |
| اللغة: | English |
| Relation: | CHINESE CHEMICAL LETTERS; http://ir.gig.ac.cn/handle/344008/48158 |
| DOI: | 10.1016/j.cclet.2019.07.041 |
| الاتاحة: | http://ir.gig.ac.cn/handle/344008/48158 https://doi.org/10.1016/j.cclet.2019.07.041 |
| رقم الانضمام: | edsbas.5CA287D0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.cclet.2019.07.041 |
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