Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020JD032375 |
Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5 | |
Zhu, Ren-guo1; Xiao, Hua-Yun1,2; Zhu, Yuwen1; Wen, Zequn3; Fang, Xiaozheng1; Pan, Yuanyuan1 | |
2020-03-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Amino acids is an important organic nitrogen compound class in aerosol. Its origins and transformation in the atmosphere remain poorly understood. The concentrations of free amino acids (FAAs) and combined amino acids (CAAs) and delta N-15 values of free and combined Glycine (Gly) in PM2.5 and main emission sources (plant, soil, and aerosol from biomass burning) were investigated from five sampling sites in Nanchang area (Jiangxi Province, China). Our results showed that the composition profiles of CAAs and FAAs were quite different from each other in PM2.5. For CAAs, percentages of individual combined amino acids were different between biomass burning sources and plant or soil sources, and we found that the composition profiles of aerosol CAAs could reflect the contribution of the main emission sources. For FAAs, a predominance of free Gly was observed in aerosol FAAs pool because atmospheric photooxidative processes could increase free Gly and decrease other reactive FAAs. This implied that the composition of aerosol FAAs could not reflect their origins. A strong correlation between delta N-15(F-Gly) values in aerosols or sources and the delta N-15(C-Gly) values in their parent CAAs was observed, indicating that the isotope effect associated with Gly transformation in aerosols may be small. Additionally, we found more positive delta N-15(Gly) in aerosols emitted by biomass burning, which was likely due to N-15-depleted amino-N loss from Gly molecule. The results suggested that delta N-15(Gly) values in aerosols might be used to identify biomass burning sources. |
英文关键词 | free amino acids combined amino acids PM2 5 nitrogen isotope sources transformation processes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000519602000022 |
WOS关键词 | FINE PARTICULATE MATTER ; SOLUBLE ORGANIC NITROGEN ; ATMOSPHERIC AEROSOLS ; RAIN SPLASH ; FOG WATERS ; PARTICLES ; DISPERSAL ; OXIDATION ; MARKERS ; NUCLEI |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/280111 |
专题 | 气候变化 |
作者单位 | 1.East China Univ Technol, Jiangxi Prov Key Lab Causes & Control Atmospher P, Nanchang, Peoples R China; 2.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai, Peoples R China; 3.Kunming Univ Sci & Technol, Fac Land Resource Engn, Dept Earth Sci, Kunming, Yunnan, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu, Ren-guo,Xiao, Hua-Yun,Zhu, Yuwen,et al. Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(5). |
APA | Zhu, Ren-guo,Xiao, Hua-Yun,Zhu, Yuwen,Wen, Zequn,Fang, Xiaozheng,&Pan, Yuanyuan.(2020).Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(5). |
MLA | Zhu, Ren-guo,et al."Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.5(2020). |
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