Inicio  /  Atmosphere  /  Vol: 9 Núm: 11 Par: Novembe (2018)  /  Artículo
ARTÍCULO
TITULO

Comparison of Measurement-Based Methodologies to Apportion Secondary Organic Carbon (SOC) in PM2.5: A Review of Recent Studies

Deepchandra Srivastava    
Olivier Favez    
Emilie Perraudin    
Eric Villenave and Alexandre Albinet    

Resumen

Secondary organic aerosol (SOA) is known to account for a major fraction of airborne particulate matter, with significant impacts on air quality and climate at the global scale. Despite the substantial amount of research studies achieved during these last decades, the source apportionment of the SOA fraction remains difficult due to the complexity of the physicochemical processes involved. The selection and use of appropriate approaches are a major challenge for the atmospheric science community. Several methodologies are nowadays available to perform quantitative and/or predictive assessments of the SOA amount and composition. This review summarizes the current knowledge on the most commonly used approaches to evaluate secondary organic carbon (SOC) contents: elemental carbon (EC) tracer method, chemical mass balance (CMB), SOA tracer method, radiocarbon (14C) measurement and positive matrix factorization (PMF). The principles, limitations, challenges and good practices of each of these methodologies are discussed in the present article. Based on a comprehensive—although not exhaustive—review of research papers published during the last decade (2006–2016), SOC estimates obtained using these methodologies are also summarized for different regions across the world. Conclusions of some studies which are directly comparing the performances of different methodologies are then specifically discussed. An overall picture of SOC contributions and concentrations obtained worldwide for urban sites under similar conditions (i.e., geographical and seasonal ones) is also proposed here. Finally, further needs to improve SOC apportionment methodologies are also identified and discussed.

Palabras claves

 Artículos similares

       
 
Marina Pereira Ribeiro,Mariana Mendes Costa Oliveira,Nayara de Santana Santos,Alessandra Cristina Silva Valentim     Pág. 119 - 135
O Brasil apresenta um alto cultivo de raiz de mandioca, que além de ser usada para consumo in natura, possui diversos produtos derivados, dentre os quais se destacam a farinha e a goma. O processo de beneficiamento da mandioca gera um subproduto denomina... ver más

 
Jamalunlaili Abdullah,Che Bon Ahmad     Pág. 3 - 8
The Orang Asli economically is the most marginalized ethnic group in Malaysia. This is due to their low education attainment, heavy dependence on subsistence agriculture and their locations in the interior of the country. The paper evaluates the effectiv... ver más

 
Viviana Silvia Leonardi,Darío Albano Miraglia    
El impacto de eventos deportivos ha sido motivo denumerosas investigaciones. Actualmente el impulso de dichoseventos puede considerarse como una estrategia de desarrollolocal. En la Argentina el turismo de eventos deportivos es unamodalidad que moviliza ... ver más

 
Gilles Grandjean, Loïc Thomas, Séverine Bernardie and The SAMCO Team    
In our study, we present a proactive decision support tool able to compute the impacts of different possible scenarios for territories impacted by mountain risks. The objective of this work was to develop and test various hazard and risk assessment metho... ver más
Revista: Climate

 
Justin Udie, Subhes Bhattacharyya and Leticia Ozawa-Meida    
The impact of climate change on the Niger Delta is severe, as extreme weather events have inflicted various degrees of stress on critical oil/gas infrastructure. Typically, assets managers and government agencies lack a clear framework for evaluating the... ver más
Revista: Climate