Mass Spectrometry Imaging Strategy for In Situ Quantification of Soot in Size-Segregated Air Samples
文献类型：期刊论文
| 作者 | Min, Ke; Li, Yong ; Lin, Yue; Yang, Xuezhi; Chen, Zigu; Chen, Bo; Ma, Ming; Liu, Qian; Jiang, Guibin
|
| 刊名 | ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2022 |
| 页码 | 1-9 |
| ISSN号 | 0003-2700 |
| 英文摘要 | Soot, mainly derived from incomplete combustion of fossil fuel and biomass, exists ubiquitously in different environmental matrixes. To study the detrimental effects of soot on climate, air quality, and human health, accurate quantification of soot is an important prerequisite. However, until now, quantification of soot in environmental media, especially in carbonaceous media, is still very challenging. Here, we report a matrix-free laser desorption/ionization mass spectrometry (LDI-MS) method for in situ imaging of soot particles in size-segregated aerosol samples collected on filter membranes. A series of round-shaped sample spots in filter membranes were selected and subjected to MS imaging analysis, enabling direct in situ quantification of soot without solvent extraction or separation. Especially, the MS imaging with serial sample spots can overcome the problems of sweet-spot in LDI-MS and inhomogeneous distribution of soot in the filter membrane, thus greatly improving the precision of quantification. The limit of detection of soot was 4 ng/m2 and the recovery was 84.4-126%. By using this method, we found that a higher soot content was present in larger-sized particulate matter than smaller-sized particles, suggesting that aerosol soot was mainly derived from primary emission sources. Furthermore, this method also shows the potential to analyze nitrate and sulfate species in PM2.5. To the best of our knowledge, it is the first method capable of simultaneous analysis of inorganic salts and soot in air samples. It represents a novel strategy for in situ quantification of aerosol soot with the advantages of high specificity, high sensitivity, separation-, solvent-and matrix-free. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48502]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Research Center for Eco-Environmental Sciences (RCEES) 2.Hunan Normal University 3.Chinese Academy of Sciences 4.University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Min, Ke,Li, Yong,Lin, Yue,et al. Mass Spectrometry Imaging Strategy for In Situ Quantification of Soot in Size-Segregated Air Samples[J]. ANALYTICAL CHEMISTRY,2022:1-9. |
| APA | Min, Ke.,Li, Yong.,Lin, Yue.,Yang, Xuezhi.,Chen, Zigu.,...&Jiang, Guibin.(2022).Mass Spectrometry Imaging Strategy for In Situ Quantification of Soot in Size-Segregated Air Samples.ANALYTICAL CHEMISTRY,1-9. |
| MLA | Min, Ke,et al."Mass Spectrometry Imaging Strategy for In Situ Quantification of Soot in Size-Segregated Air Samples".ANALYTICAL CHEMISTRY (2022):1-9. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
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。