Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China
Abstract In the spring of 2023, two severe dust events occurred in the coastal city of Qinhuangdao, North China. We investigated organic carbon (OC) and elemental carbon (EC) in PM10 using an OC/EC analyzer and identified the morphology and elemental composition of individual dust particles using a...
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| Format: | Article |
| Language: | English |
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Springer
2024-03-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.240002 |
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| author | Wenhua Wang Hui Zhou Ruihe Lyu Longyi Shao Wenmiao Li Jiaoping Xing Zhe Zhao Xian Li Xiuyan Zhou Daizhou Zhang |
| author_facet | Wenhua Wang Hui Zhou Ruihe Lyu Longyi Shao Wenmiao Li Jiaoping Xing Zhe Zhao Xian Li Xiuyan Zhou Daizhou Zhang |
| author_sort | Wenhua Wang |
| collection | DOAJ |
| description | Abstract In the spring of 2023, two severe dust events occurred in the coastal city of Qinhuangdao, North China. We investigated organic carbon (OC) and elemental carbon (EC) in PM10 using an OC/EC analyzer and identified the morphology and elemental composition of individual dust particles using a scanning electron microscope coupled with energy-dispersive X-ray (SEM-EDX). Results showed that OC mass concentrations varied significantly from 12.6 µg m−3 to 74.6 µg m−3 and showed a significant positive correlation with the PM10 mass concentration. On average, OC made up 4.6% ± 1.1% and 4.3% ± 0.6% of the total PM10 mass in two dust periods. Particularly, the weight ratio of OC-to-coarse particles (PM2.5-10) was stable at approximately 2.8% ± 0.2%. In contrast, EC was less than 1.0% of the total PM10 mass, with an average value of 0.13% ± 0.26% and 0.28% ± 0.15% in two dust periods. According to SEM-EDX results, the average weight ratios of sulfur on detected individual dust particles were 0.48% and 1.88% in two dust periods, which were less than the previously reported value in non-dust days, indicating inefficient formation of secondary species on the dust particles. SEM-EDX analysis further revealed that approximately 5.2% of the particles (in number) were irregularly shaped C-dominated particles, which might be carbonaceous species-containing particles. These results highlighted that the dust plumes brought a certain amount of OC but limited EC from dust sources. |
| format | Article |
| id | doaj-art-d2329590d48d4109bd50a7aa35a1282e |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-d2329590d48d4109bd50a7aa35a1282e2025-02-09T12:24:19ZengSpringerAerosol and Air Quality Research1680-85842071-14092024-03-0124511010.4209/aaqr.240002Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North ChinaWenhua Wang0Hui Zhou1Ruihe Lyu2Longyi Shao3Wenmiao Li4Jiaoping Xing5Zhe Zhao6Xian Li7Xiuyan Zhou8Daizhou Zhang9School of Resources and Civil Engineering, Northeastern UniversitySchool of Resources and Civil Engineering, Northeastern UniversityCollege of Marine Resources and Environment, Hebei Normal University of Science and TechnologyState Key Laboratory of Coal Resources and Safe Mining and College of Geosciences and Surveying Engineering, China University of Mining and TechnologySchool of Resources and Civil Engineering, Northeastern UniversitySchool of Forestry, Jiangxi Agricultural UniversitySchool of Resources and Civil Engineering, Northeastern UniversitySchool of Resources and Civil Engineering, Northeastern UniversitySchool of Resources and Civil Engineering, Northeastern UniversityFaculty of Environmental and Symbiotic Sciences, Prefectural University of KumamotoAbstract In the spring of 2023, two severe dust events occurred in the coastal city of Qinhuangdao, North China. We investigated organic carbon (OC) and elemental carbon (EC) in PM10 using an OC/EC analyzer and identified the morphology and elemental composition of individual dust particles using a scanning electron microscope coupled with energy-dispersive X-ray (SEM-EDX). Results showed that OC mass concentrations varied significantly from 12.6 µg m−3 to 74.6 µg m−3 and showed a significant positive correlation with the PM10 mass concentration. On average, OC made up 4.6% ± 1.1% and 4.3% ± 0.6% of the total PM10 mass in two dust periods. Particularly, the weight ratio of OC-to-coarse particles (PM2.5-10) was stable at approximately 2.8% ± 0.2%. In contrast, EC was less than 1.0% of the total PM10 mass, with an average value of 0.13% ± 0.26% and 0.28% ± 0.15% in two dust periods. According to SEM-EDX results, the average weight ratios of sulfur on detected individual dust particles were 0.48% and 1.88% in two dust periods, which were less than the previously reported value in non-dust days, indicating inefficient formation of secondary species on the dust particles. SEM-EDX analysis further revealed that approximately 5.2% of the particles (in number) were irregularly shaped C-dominated particles, which might be carbonaceous species-containing particles. These results highlighted that the dust plumes brought a certain amount of OC but limited EC from dust sources.https://doi.org/10.4209/aaqr.240002Dust stormOrganic carbonElemental carbonIndividual particleSEM-EDX |
| spellingShingle | Wenhua Wang Hui Zhou Ruihe Lyu Longyi Shao Wenmiao Li Jiaoping Xing Zhe Zhao Xian Li Xiuyan Zhou Daizhou Zhang Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China Aerosol and Air Quality Research Dust storm Organic carbon Elemental carbon Individual particle SEM-EDX |
| title | Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China |
| title_full | Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China |
| title_fullStr | Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China |
| title_full_unstemmed | Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China |
| title_short | Organic Carbon and Elemental Carbon in Two Dust Plumes at a Coastal City in North China |
| title_sort | organic carbon and elemental carbon in two dust plumes at a coastal city in north china |
| topic | Dust storm Organic carbon Elemental carbon Individual particle SEM-EDX |
| url | https://doi.org/10.4209/aaqr.240002 |
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