Isotopic Characterization of Gaseous Mercury and Particulate Water-Soluble Organic Carbon Emitted from Open Grass Field Burning in Aso, Japan
Source abstract
Abstract
Biomass burning is one of the major emitters of airborne particulate matter (PM) and gaseous mercury. In order to apply the isotopic fingerprinting method to process identification and source apportionment studies, isotopic characterizations of targeted substances at emission are indispensable. Here, we report the stable isotopic composition of total gaseous mercury (TGM) and the stable and radiocarbon isotopic composition of low-volatile water-soluble nitrogen (LV-WSN) and organic carbon (LV-WSOC) in PM emitted from open grass field burning in the Aso region of Japan. The measurement results showed that TGM concentrations in the air increased during the open field burning events, indicating the presence of TGM emissions. The results of LV-WSN analysis showed very low concentrations; therefore, the stable nitrogen isotope ratios could not be measured. The stable mercury isotope ratios exhibited lighter composition than those observed during non-biomass-burning days. The analysis of LV-WSOC revealed heavy stable carbon isotope ratios (average ± SD, −18 ± 2‰), suggesting a substantial contribution from C4 plant carbon. The 14C analysis showed that more than 98% of the LV-WSOC was modern carbon, indicating the contribution of plant carbon to PM emitted from biomass burning. The findings here provide reference isotope compositions of TGM and particulate LV-WSOC from biomass burning in this region.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Mercury impact and mitigation studies · Toxic Organic Pollutants Impact · Atmospheric chemistry and aerosols
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Environment and Public Health, National Institute for Minamata Disease, 4058-18 Hama, Minamata, Kumamoto 867-0008, Japan
Funding
National Institute for Minamata Disease
References (39)
Show source-provided references
1. Biomass burning as a source of atmospheric gases CO, H2, N2O, NO, CH3Cl, and COS10.1038/282253a0 ↗
2. Emission of trace gases and aerosols from biomass burning10.1029/2000GB001382 ↗
3. Emission of trace gases and aerosols from biomass burning—An updated assessment10.5194/acp-19-8523-2019 ↗
4. Biomass burning in Asia: Annual and seasonal estimates and atmospheric emissions10.1029/2003GB002040 ↗
5. Improving global estimates of atmospheric emissions from biomass burning
6. Brown clouds over South Asia: Biomass or fossil fuel combustion?10.1126/science.1164857 ↗
7. Initial estimates of mercury emissions to the atmosphere from global biomass burning10.1021/es802703g ↗
8. Pirrone, N., and Mason, R. (2008). Mercury emissions from global biomass burning: Spatial and temporal distribution. Mercury Fate and Transport in the Global Atmosphere: Measurements, Models, and Policy Implications Interim Report of the UNEP Global Mercury Partnership, Springer. Chapter 8.
9. High time-resolved measurement of stable carbon isotope composition in water-soluble organic aerosols: Method optimization and a case study during winter haze in eastern China10.5194/acp-19-11071-2019 ↗
10. Sirignano, C., Riccio, A., Chianese, E., Ni, H., Zenker, K., D’Onofrio, A., Meijer, H.A.J., and Dusek, U. (2019). High contribution of biomass combustion to PM2.5 in the city centre of Naples (Italy). Atmosphere, 10.10.3390/atmos10080451 ↗
11. Estimating contributions from biomass burning, fossil fuel combustion, and biogenic carbon to carbonaceous aerosols in the valley of Chamonix: A dual approach based on radiocarbon and levoglucosan10.5194/acp-16-13753-2016 ↗
12. The impact of biogenic carbon sources on aerosol absorption in Mexico City10.5194/acp-9-1537-2009 ↗
13. Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern10.5194/acp-16-5513-2016 ↗
14. Concentration and stable carbon isotopic composition of ethane and benzene using a global three-dimensional isotope inclusive chemical tracer model
15. Koppmann, R. (2007). Gas Chromatography-Isotope Ratio Mass Spectrometry. Volatile Organic Compounds in the Atmosphere, Blackwell Publishing.10.1002/9780470988657 ↗
16. Evaluation of transboundary secondary organic aerosol in the urban air of western Japan: Direct comparison of two site observations10.1021/acsearthspacechem.8b00106 ↗
17. Method for the determination of concentration and stable carbon isotope ratios of atmospheric phenols10.5194/amt-6-2965-2013 ↗
18. High precision isotope ratio measurements of mercury isotopes in cinnabar ores using multi-collector inductively coupled plasma mass spectrometry10.1039/b300451a ↗
19. Mercury isotope fractionation during ore retorting in the Almadén mining district10.1016/j.chemgeo.2013.08.036 ↗
20. Mercury isotope signatures as tracers for Hg cycling at the new Idria Hg mine10.1021/es305245z ↗
21. Mercury stable isotope signatures of world coal deposits and historical coal combustion emissions10.1021/es501208a ↗
22. Isotopic characterization of mercury in natural gas via analysis of mercury removal unit catalysis10.1021/acsearthspacechem.7b00118 ↗
23. Mercury emissions and stable isotopic compositions at Vulcano Island (Italy)10.1016/j.epsl.2008.10.023 ↗
24. Irei, S. (2020). Development of fast sampling and high recovery extraction method for stable isotope measurement of gaseous mercury. Appl. Sci., 10.10.1002/essoar.10502644.1 ↗
25. (2021, September 20). Ministry of Environment, Report of Grass Field Scenery Sustentation in National Park. Available online: https://www.aso-sougen.com/data/h13/index.html.
26. Re-examination of occurrence of C4 plants in Japan10.1626/jcs.84.386 ↗
27. Vegetation and landscate in Aso
28. Sage, R.F., and Monson, R.K. (1999). The Taxonomic distribution of C4 photosynthesis. C4 Plant Biology, Academic Press.10.1016/B978-012614440-6/50017-3 ↗
29. Yoshimura, Y. (2021, October 20). Variety of C4 Leaves. Available online: http://cse.naro.affrc.go.jp/yyoshi/leafstructure.html.
30. Transboundary secondary organic aerosol in western Japan indicated by the δ13C of water-soluble organic carbon and the m/z 44 signal in organic aerosol mass spectra10.1021/es405362y ↗
31. Mercury isotopes in a forested ecosystem: Implications for air-surface exchange dynamics and the global mercury cycle10.1002/gbc.20021 ↗
32. Mercury deposition and re-emission pathways in boreal forest soils investigated with Hg isotope signatures10.1021/acs.est.5b00742 ↗
33. Stable mercury isotope variation in rice plants (Oryza sativa L.) from the Wanshan mercury mining district, SW China10.1021/es304302a ↗
34. Isotopic compositions of atmospheric mercury in China: New evidence for sources and transformation processes in air and in vegetation10.1021/acs.est.6b01782 ↗
35. Mercury isotope compositions across North American forests10.1002/2015GB005323 ↗
36. Reporting of variations in the natural isotopic composition of mercury10.1007/s00216-007-1236-9 ↗
37. Measurement report: Source characteristics of water-soluble organic carbon in PM2.5 at two sites in Japan, as assessed by long-term observation and stable carbon isotope ratio10.5194/acp-21-11815-2021 ↗
38. Discussion: Reporting of 14C data10.1017/S0033822200003672 ↗
39. Reporting 14C activities and concentrations10.1017/S0033822200057106 ↗