Individual particle analysis for source apportionment of suspended particulate matter using electron probe microanalysis

Kim, B. A.; Tomiyasu, Bunbunoshin; Owari, Masanori; Nihei, Yoshimasa

doi:10.1002/sia.964

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…These metals could react with CO 3 2À to form metal-carbonate complex/minerals on the surface of calcitic or dolomitic crystals (Acosta et al 24 ). The possible sources of the Ca-rich particles are not only soil, but also cement, gravel (Vega et al 40 ), building materials (Kim et al 41 ), road paint and the pavement (Fukuzaki et al 42 ).…”

Section: Dust Propertiesmentioning

confidence: 99%

Heavy metal concentrations in particle size fractions from street dust of Murcia (Spain) as the basis for risk assessment

et al. 2011

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Street dust has been sampled from six different types of land use of the city of Murcia (Spain). The samples were fractionated into eleven particle size fractions (<2, 2-10, 10-20, 20-50, 50-75, 75-106, 106-150, 150-180, 180-425, 425-850 μm and 850-2000 μm) and analyzed for Pb, Cu, Zn and Cd. The concentrations of these four potentially toxic metals were assessed, as well as the effect of particle size on their distribution. A severe enrichment of all metals was observed for all land-uses (industrial, suburban, urban and highways), with the concentration of all metals affected by the type of land-use. Coarse and fine particles in all cases showed concentrations of metals higher than those found in undisturbed areas. However, the results indicated a preferential partitioning of metals in fine particle size fractions in all cases, following a logarithmic distribution. The accumulation in the fine fractions was higher when the metals had an anthropogenic origin. The strong overrepresentation of metals in particles <10 μm indicates that if the finest fractions are removed by a vacuum-assisted dry sweeper or a regenerative-air sweeper the risk of metal dispersion and its consequent risk for humans will be highly reduced. Therefore, we recommend that risk assessment programs include monitoring of metal concentrations in dust where each land-use is separately evaluated. The finest particle fractions should be examined explicitly in order to apply the most efficient measures for reducing the risk of inhalation and ingestion of dust for humans and risk for the environment.

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Section: Dust Propertiesmentioning

confidence: 99%

Heavy metal concentrations in particle size fractions from street dust of Murcia (Spain) as the basis for risk assessment

et al. 2011

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“…As the major mineral content for each fraction was similar across sample sites (Figure 6), irrespective of traffic density, as commonly occurs in other world roads dusts (e.g., [90][91][92]), it was deduced that there must be a unique source unrelated to traffic or land use for the most abundant minerals present in road dust (muscovite, anorthite, quartz, albite, calcite, chlorite, dolomite, and orthoclase). Some studies confirmed that there are inputs from surrounding soils and weathered rocks to the road surfaces [90,92,93]; nevertheless, other potential anthropogenic contributions, common in all roads (cement, gravel, building materials, road paint or degraded aggregates from asphaltic pavement [94][95][96]), cannot be ruled out. These common minerals also pose human health risk.…”

Section: Mineralogical Composition Of Fractionated Road Dustmentioning

confidence: 99%

Effects of Road Dust Particle Size on Mineralogy, Chemical Bulk Content, Pollution and Health Risk Analyses

Navarro-Ciurana,

Corbella,

Meroño

2023

IJERPH

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Because of the rising environmental and health concerns associated with atmospheric pollution caused by potentially toxic elements (PTEs), several road dust studies have been performed across the world in recent decades. This paper illustrates the effects of particle size on the PTE contents, mineralogical composition, environmental pollution and health risk assessments in road dust from Barcelona (Spain). The samples were sieved into five size fractions ranging from <45 to 500–800 µm. Although the major mineral contents (tectosilicates, phyllosilicates, and carbonates) were profuse in all fractions, the identified inhalable PTE particles (e.g., Fe, Cr, Cu, Zn, Ni, and REE), with size < 10 µm, were more pervasive in the finest fraction (<45 μm). This is consistent with the concentrations measured: the finest fractions were richer in PTEs than the coarser ones, resulting in a direct correlation with the enrichment factor (EFx), geo-accumulation (Igeo), and non-carcinogenic (HI) and carcinogenic (CRI) values. Igeo and EFx values can be appropriate tracers for some common elements (e.g., Zn, Sb, Sn, Cu, and Cr), but they do not seem adequate for anthropogenic particles accumulated at concentrations similar to the geogenic background. Overall, the HI and CRI values obtained in Barcelona were acceptable, reflecting no serious health impacts in the study area, except for Cr. Our results suggest that fine dust particles are a more suitable fraction to conduct pollution and health risk assessments than coarser ones, although the EFx, Igeo, HI, and CRI threshold values should be redefined in the future to include all emergent pollutants as well. In summary, monitoring programs should include at least the road dust evaluation of <45 µm particles, which can be performed with a simple sieving method, which is both time- and cost-effective.

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“…However, there is no analytical method that can clarify the structure of individual BC particle, because the BC is very small. The individual particle analysis of other kinds of aerosol have been carried out using time-of-flight secondary ion mass spectrometry (TOF-SIMS) and energy dispersive X-ray spectrometry (EDS) with scanning electron microscopy (SEM) 4,5) . Figure 2 shows the SEM images of diesel soot particle at the same field of view before and after ESD with the acetone and water, respectively.…”

Section: Introductionmentioning

confidence: 99%

Analysis of dissolved components from diesel soot particles

Murata

Takano

Morita

et al. 2019

JSA

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Since diesel soot particles (black carbon, BC) is a very fine particle of about 10 to 50 nm, there is a possibility that it invades deep into human lungs. In order to evaluate the impact of BC on human health, it is necessary to observe the detailed structure of BC along with toxicology. Focused ion beam time-of-flight secondary ion mass spectrometer (FIB-TOF-SIMS) developed by the authors, has a high spatial resolution and low detection limit, and the components imaging of individual particle can be analyzed with many kinds of aerosol. However, since BC is very small, the detailed structure of particles cannot be observed directly with the FIB-TOF-SIMS. In this study, in order to evaluate the structure of BC, we combined a new aerosol dialysis method and the FIB-TOF-SIMS. In this method, even if the lateral resolution is insufficient, the structure of BC can be visualized with separating the particles and surface adhering components, respectively.

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Individual particle analysis for source apportionment of suspended particulate matter using electron probe microanalysis

Cited by 7 publications

References 16 publications

Heavy metal concentrations in particle size fractions from street dust of Murcia (Spain) as the basis for risk assessment

Heavy metal concentrations in particle size fractions from street dust of Murcia (Spain) as the basis for risk assessment

Effects of Road Dust Particle Size on Mineralogy, Chemical Bulk Content, Pollution and Health Risk Analyses

Analysis of dissolved components from diesel soot particles

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