Traceability Issue in PM2.5 and PM10 Measurements

Aggarwal, Shankar G.; Kumar, Sonu; Mandal, Papiya; Sarangi, Bighnaraj; Singh, Khushboo; Pokhariyal, Jyoti; Mishra, Sumit; Agarwal, Sarla; Sinha, Deepak K.; Singh, Shiva Kumar; Sharma, C.; Gupta, Prabhat K.

doi:10.1007/s12647-013-0073-x

Cited by 31 publications

(12 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pavuluri et al (2011) measured δ 13 C ratios from the tropical Indian aerosols (PM 10 ) collected on daytime and nighttime basis in winter and summer, 2007 from Chennai and inferred that biofuel/ biomass burning is the major source of aerosol carbon in South and Southeast Asia. Urban locations such as Mumbai (Aggarwal et al 2013) and Mexico cities (López-Veneroni 2009) reported δ 13 C values of −26.2±0.3 and −25.1‰, respectively, mainly due to the fossil fuel combustion, and are comparable to summer average values over Nainital. On the contrary, δ 13 C of aerosols over Nainital are much lower Fig.…”

Section: Resultsmentioning

confidence: 77%

See 1 more Smart Citation

Organic and inorganic components of aerosols over the central Himalayas: winter and summer variations in stable carbon and nitrogen isotopic composition

Hegde

Kawamura

Joshi

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

The aerosol samples were collected from a high elevation mountain site, Nainital, in India (1958 m asl) during September 2006 to June 2007 and were analyzed for water-soluble inorganic species, total carbon, nitrogen, and their isotopic composition (δ(13)C and δ(15)N, respectively). The chemical and isotopic composition of aerosols revealed significant anthropogenic influence over this remote free-troposphere site. The amount of total carbon and nitrogen and their isotopic composition suggest a considerable contribution of biomass burning to the aerosols during winter. On the other hand, fossil fuel combustion sources are found to be dominant during summer. The carbon aerosol in winter is characterized by greater isotope ratios (av. -24.0‰), mostly originated from biomass burning of C4 plants. On the contrary, the aerosols in summer showed smaller δ(13)C values (-26.0‰), indicating that they are originated from vascular plants (mostly of C3 plants). The secondary ions (i.e., SO4 (2-), NH4 (+), and NO3 (-)) were abundant due to the atmospheric reactions during long-range transport in both seasons. The water-soluble organic and inorganic compositions revealed that they are aged in winter but comparatively fresh in summer. This study validates that the pollutants generated from far distant sources could reach high altitudes over the Himalayan region under favorable meteorological conditions.

show abstract

Section: Resultsmentioning

confidence: 77%

“…Magnesium (Mg 2+ ) ion concentrations in the samples were found to be less than the detection limit. It must be mentioned here that the analytical errors were below 1.3 % based on the triplicate analyses of the filter sample (Aggarwal 2010;Aggarwal et al 2013).…”

Section: Determination Of Water-soluble Inorganic Speciesmentioning

confidence: 88%

Organic and inorganic components of aerosols over the central Himalayas: winter and summer variations in stable carbon and nitrogen isotopic composition

Hegde

Kawamura

Joshi

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…Secondly, we did not employ a preceding organic denuder or backup filters in the high-volume air sampler for the correction of positive artifacts (by adsorption of organic vapor) and negative artifacts (by volatilization of semivolatile materials) in measured OC. Although the positive artifacts are thought to be larger than the negative artifacts (Chow et al, 2010;, the high-volume air sampler tends to underestimate particle concentrations (Lagler et al, 2011;Aggarwal et al, 2013), and thus the measurement by the high-volume air sampler may partly reduce such positive artifacts as recently estimated by D. . However, the aging and oxidation properties and source characteristics of measured aerosols can still be altered by the potential loss of semivolatile organic compounds.…”

Section: Introductionmentioning

confidence: 96%

On the multiday haze in the Asian continental outflow: the important role of synoptic conditions combined with regional and local sources

et al. 2017

View full text Add to dashboard Cite

Abstract. The air quality of the megacities in populated and industrialized regions like East Asia is affected by both local and regional emission sources. The combined effect of regional transport and local emissions on multiday haze was investigated through a synthetic analysis of PM 2.5 sampled at both an urban site in Seoul, South Korea and an upwind background site on Deokjeok Island over the Yellow Sea during a severe multiday haze episode in late February 2014. Inorganic components and carbonaceous species of daily PM 2.5 samples were measured, and gaseous pollutants, local meteorological factors, and synoptic meteorological conditions were also determined. A dominance of fine-mode particles (PM 2.5 / PM 10 ∼ 0.8), a large secondary inorganic fraction (76 %), high OC / EC (> 7), and highly oxidized aerosols (oxygen-to-carbon ratio of ∼ 0.6 and organic-mass-to-carbon ratio of ∼ 1.9) under relatively warm, humid, and stagnant conditions characterize the multiday haze episode in Seoul; however, the early and late stages of the episode show different chemical compositions of PM 2.5 . High concentrations of sulfate in both Seoul and the upwind background in the early stage suggest a significant regional influence on the onset of the multiday haze. At the same time, high concentrations of nitrate and organic compounds in Seoul, which are local and highly correlated with meteorological factors, suggest the contribution of local emissions and secondary formation under stagnant meteorological conditions to the haze. A slow eastward-moving high-pressure system from southern China to the East China Sea induces the regional transport of aerosols and potential gaseous precursors for secondary aerosols from the North China Plain in the early stage but provides stagnant conditions conducive to the accumulation and the local formation of aerosols in the late stage. A blocking ridge over Alaska that developed during the episode hinders the zonal propagation of synoptic-scale systems and extends the haze period to several days. This study provides chemical insights into haze development sequentially by regional transport and local sources, and shows that the synoptic condition plays an important role in the dynamical evolution of long-lasting haze in the Asian continental outflow region.

show abstract

“…PM 2.5 atmospheric aerosols have a strong relationship with health risks due to their high penetration power in the lungs contributing to health effects such as exacerbation of asthma attacks (Pope et al, 2011;Aggarwal et al, 2013). Scientific research has focused on carbonaceous species because it contributes around 25e54% of PM 2.5 aerosols in rural areas and thus capable of perturbing regional as well as global climate and atmospheric chemistry (Zhang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Mass loading and episodic variation of molecular markers in PM2.5 aerosols over a rural area in eastern central India

Nirmalkar

Deshmukh

Deb

et al. 2015

Atmospheric Environment

View full text Add to dashboard Cite

Traceability Issue in PM2.5 and PM10 Measurements

Cited by 31 publications

References 29 publications

Organic and inorganic components of aerosols over the central Himalayas: winter and summer variations in stable carbon and nitrogen isotopic composition

Organic and inorganic components of aerosols over the central Himalayas: winter and summer variations in stable carbon and nitrogen isotopic composition

On the multiday haze in the Asian continental outflow: the important role of synoptic conditions combined with regional and local sources

Mass loading and episodic variation of molecular markers in PM2.5 aerosols over a rural area in eastern central India

Contact Info

Product

Resources

About