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| DOI | 10.1016/j.jes.2023.10.031 |
| Metrological traceable calibration of organic carbon and elemental carbon based on laboratory-generated reference materials | |
| 发表日期 | 2025 |
| ISSN | 1001-0742 |
| EISSN | 1878-7320 |
| 起始页码 | 149 |
| 卷号 | 149 |
| 英文摘要 | Carbonaceous aerosol, including organic carbon (OC) and elemental carbon (EC), has significant influence on human health, air quality and climate change. Accurate measurement of carbonaceous aerosol is essential to reduce the uncertainty of radiative forcing estimation and source apportionment. The accurate separation of OC and EC is controversial due to the charring of OC. Therefore, the development of reference materials (RM) for the validation of OC/EC separation is an important basis for further study. Previous RMs were mainly based on ambient air sampling, which could not provide traceability of OC and EC concentration. To develop traceable RMs with known OC/EC contents, our study applied an improved aerosol generation and mixing technique, providing uniform deposition of particles on quartz filters. To generate OC aerosol with similar pyrolytic property of ambient aerosol, both water soluble organic carbon (WSOC) and water insoluble organic carbon (WIOC) were used, and amorphous carbon was selected for EC surrogate. The RMs were analyzed using different protocols. The homogeneity within the filter was validated, reaching below 2%. The long -term stability of RMs has been validated with RSD ranged from 1.7%-3.2%. Good correlation was observed between nominal concentration of RMs with measured concentration by two protocols, while the difference of EC concentration was within 20%. The results indicated that the newly developed RMs were acceptable for the calibration of OC and EC, which could improve the accuracy of carbonaceous aerosol measurement. Moreover, the laboratory-generated EC-RMs could be suitable for the calibration of equivalent BC concentration by Aethalometers. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ) |
| 英文关键词 | Carbonaceous aerosol; Split point; Reference material; Laboratory-generated; Traceability |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001224043400001 |
| 来源期刊 | JOURNAL OF ENVIRONMENTAL SCIENCES
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/303039 |
| 作者单位 | Taiyuan University of Technology; Shandong University |
| 推荐引用方式 GB/T 7714 | . Metrological traceable calibration of organic carbon and elemental carbon based on laboratory-generated reference materials[J],2025,149. |
| APA | (2025).Metrological traceable calibration of organic carbon and elemental carbon based on laboratory-generated reference materials.JOURNAL OF ENVIRONMENTAL SCIENCES,149. |
| MLA | "Metrological traceable calibration of organic carbon and elemental carbon based on laboratory-generated reference materials".JOURNAL OF ENVIRONMENTAL SCIENCES 149(2025). |
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