Carbonaceous particulate matter characterization in an urban and a rural site in the Philippines

Bautista, Angel T.; Pabroa, Preciosa Corazon; Santos, Filipe Lima; Racho, Joseph Michael D.; Quirit, Leni L.

doi:10.5094/apr.2014.030

Cited by 24 publications

(4 citation statements)

References 26 publications

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“…However, moderately volatile OC fractions were also found to be a major contributor (Cao et al, 2004;Kim et al, 2011;Grabowsky et al, 2011;Bautista et al, 2014;Zhu et al, 2014).…”

Section: Introductionmentioning

confidence: 95%

Detailed comparison of OC/EC aerosol at an urban and a rural Czech background site during summer and winter

Vodička

Schwarz

Cusack

et al. 2015

Science of The Total Environment

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“…However, moderately volatile OC fractions were also found to be a major contributor (Cao et al, 2004;Kim et al, 2011;Grabowsky et al, 2011;Bautista et al, 2014;Zhu et al, 2014).…”

Section: Introductionmentioning

confidence: 95%

Detailed comparison of OC/EC aerosol at an urban and a rural Czech background site during summer and winter

Vodička

Schwarz

Cusack

et al. 2015

Science of The Total Environment

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“…Literature data are also inconsistent about the emission sources of the EC fractions (Błaszczak & Mathews 2020). The occurence of individual EC fractions was attributed, for example, to diesel vehicle exhaust (EC2-EC4) (Cao et al 2006, Sahu et al 2011, gasoline emissions (EC1-EC3) (Cao et al 2006, Zhu et al 2010, Bautista VII et al 2014, coal combustion and biomass burning (EC2, EC3) (Lim et al 2012, Aswini et al 2019 or industrial sources (EC4) (Cao et al 2004, Yan et al 2019. Indicating the exact sources would require additional chemical analyzes and in-depth analyzes of the emission situation in the study area.…”

Section: Profile Of Oc and Ec Temperature Fractions -Characteristics ...mentioning

confidence: 99%

Distribution of EC and OC temperature fractions in different research materials

Błaszczak¹,

Mathews²,

Słaby³

et al. 2023

Archives of Environmental Protection

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The aim of the study was to assess the profile of EC (elemental carbon) and OC (organic carbon) temperature fractions in PM 1 and PM 2.5 samples and in wet deposition samples (material collected on a filter). The research was conducted at the urban background station in Zabrze (southern Poland) in the period of Oct 2020-Oct 2021. PM samples were collected with high-volume samplers; the automatic precipitation collector NSA 181 by Eigenbrodt was used to collect the deposition samples. Concentrations of EC and OC were determined using thermal-optical method (carbon analyzer from Sunset Laboratory Inc., "eusaar_2" protocol). Regardless of the type of research material, organic carbon constituted the dominant part of the carbonaceous matter, and this dominance was more visible in the non-heating season. The profile of temperature fractions of OC and EC was clearly different for dust washed out by precipitation. Noteworthy is a much lower content of pyrolytic carbon (PC) in OC, which can be explained by the fact that PC is most often combined with the water soluble organic carbon. In addition, a high proportion of the OC3 fraction was observed, followed by OC4, which may indicate that these fractions are of a more regional origin. With regard to the EC fractions, the differences are less visible and concern, in particular, the higher share of EC4 and the lower of EC2. The obtained results may be a valuable source of information about the actual status of the carbonaceous matter and its transformation in the atmosphere.

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“…Both are possible sources for the particle because (1) the site has two open windows above a roadside for the outdoor PM to infiltrate into and (2) the chemical digestion room houses hot plates used for chemical preparations. These particles are usually spherical (Bautista et al, 2014). Figure 10 shows the spectrum and micrograph of a spherical C-rich particle.…”

Section: Elemental Compositionmentioning

confidence: 99%

Characterization and Elemental Analysis of Particulate Matter in a Chemical Digestion Laboratory

Labagnoy,

Marquez,

Johnson

et al. 2022

MJST

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Particulate matter (PM) may constitute health-threatening substances that are classified as carcinogens. In laboratories, common PM-emitting activities include chemical processing and electronic equipment utilization. Thus, workers run the risk of inhaling possible contaminants into their respiratory systems and affecting their overall health. In this study, PM10 and PM2.5 sampled from a chemical digestion laboratory were analyzed based on the size distribution and elemental composition. Samples were collected using a cascade impactor coupled with an air pump for 7 h per sampling day. Size distribution showed variation in the number of coarse particles, which was mainly attributable to activities that occurred during sampling. Elemental analysis by scanning electron microscope with energy dispersive X-ray identified 23 elements. Some of the highest obtained concentrations belonged to the elements O, Si, Na and Ba with 41, 21, 10 and 10% in weight percentages, respectively. Possible PM sources included indoor dust, laboratory reagents, mechanical abrasions of buildings, crustal material and combustion emission. Furthermore, six elements from the identified PM constituents, namely Ba, Cl, Al, F, Mn and Cr were determined as inhalation contaminants based on toxicological reports from the Agency for Toxic Substances and Disease Registry.

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Carbonaceous particulate matter characterization in an urban and a rural site in the Philippines

Cited by 24 publications

References 26 publications

Detailed comparison of OC/EC aerosol at an urban and a rural Czech background site during summer and winter

Detailed comparison of OC/EC aerosol at an urban and a rural Czech background site during summer and winter

Distribution of EC and OC temperature fractions in different research materials

Characterization and Elemental Analysis of Particulate Matter in a Chemical Digestion Laboratory

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