Lung deposited surface area of atmospheric aerosol particles at three observatories in Japan

Kurihara, Kazuki; Iwata, Aya; Kiriya, Miho; Yoshino, Akira; Takami, Akinori; Matsuki, Atsushi; Nishita‐Hara, Chiharu; Hara, Keiichiro; Hayashi, Masahiko; Kaneyasu, Naoki; Seto, Takafumi; Fujitani, Yuji; Funato, Koji; Inoue, Kôzô; Okuda, Tomoaki

doi:10.1016/j.atmosenv.2021.118597

Cited by 6 publications

(3 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Black carbon (BC) is released from the incomplete combustion of fuels such as coal, wood, and fossil fuels [2,3], which could absorb visible light in the atmosphere and thus exert potentially negative effects on climate, which has been regarded as an important contributor to global warming [2,4,5]. Furthermore, BC can be transferred into the cardiovascular system of human beings and lead to many respiratory diseases due to the presence of harmful reactive oxygen species on the surface [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…These interferences may result in a large bias in the measurements of BC collected using bio-monitoring tools. Ambient water-soluble brown carbon mainly includes humic-like fluorescence substances and a mixture of airborne amino acids [8,31]. Some prior studies have shown that leaves can uptake water-soluble brown carbon and different amino acids via stomata within 30 min serving as nutrients to maintain growth [32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Levels of Dry Deposition Submicron Black Carbon on Plant Leaves and the Associated Oxidative Potential

Xu,

Liu

2024

Atmosphere

View full text Add to dashboard Cite

There is a need for monitoring air pollution associated with black carbon (BC) using a passive monitor is required in remote areas where the measurements are absent. In this pilot study, we developed a quantitative method to determine dry deposition submicron BC using dual-wavelength ultraviolet–visible spectroscopy. Furthermore, we measured the levels of dry deposition BC on plant leaves from 30 plant species located in urban Nanjing using the established method. The oxidative potential of BC on plant leaves as passive bio-monitoring samplers was assessed. The concentrations of black carbon (BC) on tree leaves varied from 0.01 to 1.6 mg m−2. Significant differences in levels of BC across leaves from different tree types were observed. The values of oxidative potential in deposited particles of leaf samples were observed to be in the range of 33–46 nmol min−1 mg−1 using the dithiothreitol (DTT) assay and 18–32 nmol min−1 mg−1 using the ascorbic acid (AA) assay, respectively. In comparison, the oxidative potential of BC-dominated mass in water extracts of leaf samples was in the range of 5–35 nmol min−1 mg−1 measured using the DTT assay and 2 to 12 nmol min−1 mg−1 using the AA assay, respectively. We found variations in the levels of OP across the leaves of different tree types were not large, while the levels of OP in terms of BC-dominated mass varied greatly. These results indicate that the established method with dual-wavelength ultraviolet–visible spectroscopy could provide a simple tool to determine submicron BC in plant leaves of the passive monitor.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Levels of Dry Deposition Submicron Black Carbon on Plant Leaves and the Associated Oxidative Potential

Xu,

Liu

2024

Atmosphere

View full text Add to dashboard Cite

show abstract

“…Therefore, observations show LDSA peaks during traffic rush-hours and periods of residential activities (evenings and weekends), especially under a low and stable atmospheric boundary layer as in the winter and night-time [ 10 , 30 , 39 , 43 ]. Some studies have also observed photochemical new particle formation (NPF) and/or secondary aerosol formation (SAF; nucleation and particle growth) contributing to daytime increase in LDSA, especially with high insolation and low pollution [ 10 , 30 , 39 , 40 , 43 , 44 ]. In general, the highest LDSA has been observed in the winter, with residential heating and lower atmospheric dilution [ 39 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Heterogeneity of Lung-Deposited Surface Area in Zurich Switzerland: Lung-Deposited Surface Area as a New Routine Metric for Ambient Particle Monitoring

Edebeli¹,

Spirig²,

Fluck³

et al. 2023

Int J Public Health

View full text Add to dashboard Cite

Objective: To assess the spatiotemporal heterogeneity of lung-deposited particle surface area concentration (LDSA), while testing the long-term performance of a prototype of low-cost-low-maintenance LDSA sensors. One factor hampering epidemiological studies on fine to ultrafine particles (F-to-UFP) exposure is exposure error due to their high spatiotemporal heterogeneity, not reflected in particle mass. Though LDSA shows consistent associations between F-to-UFP exposure and health effects, LDSA data are limited.Methods: We measured LDSA in a network of ten sensors, including urban, suburban, and rural environments in Zurich, Switzerland. With traffic counts, traffic co-pollutant concentrations, and meteorological parameters, we assessed the drivers of the LDSA observations.Results: LDSA reflected the high spatiotemporal heterogeneity of F-to-UFP. With micrometeorological influences, local sources like road traffic, restaurants, air traffic, and residential combustion drove LDSA. The temporal pattern of LDSA reflected that of the local sources.Conclusion: LDSA may be a viable metric for inexpensively characterizing F-to-UFP exposure. The tested devices generated sound data and may significantly contribute to filling the LDSA exposure data gap, providing grounds for more statistically significant epidemiological studies and regulation of F-to-UFP.

show abstract

Unmasking air quality: A novel image-based approach to align public perception with pollution levels

Lin,

Wang,

Kung

et al. 2023

Environment International

View full text Add to dashboard Cite

Lung deposited surface area of atmospheric aerosol particles at three observatories in Japan

Cited by 6 publications

References 74 publications

Levels of Dry Deposition Submicron Black Carbon on Plant Leaves and the Associated Oxidative Potential

Levels of Dry Deposition Submicron Black Carbon on Plant Leaves and the Associated Oxidative Potential

Spatiotemporal Heterogeneity of Lung-Deposited Surface Area in Zurich Switzerland: Lung-Deposited Surface Area as a New Routine Metric for Ambient Particle Monitoring

Unmasking air quality: A novel image-based approach to align public perception with pollution levels

Contact Info

Product

Resources

About