Multivariate Optimization of Extraction Variables of PAH in Particulate Matter (PM 10 ) in Indoor/Outdoor Air at Campos dos Goytacazes, Brazil

Journal of the Brazilian Chemical Society

article

Ferreira, Rodrigo S.¹  Nunes, Camila R. O.¹  Souza, Murilo O.¹  Canela, Maria Cristina¹ 

[1] Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF);Laboratório de Análises Químicas e Agroambientais (LAQUA), Instituto Federal Fluminense, Campus Itaperuna

关键词: polycyclic aromatic hydrocarbons;    PM10;    atmospheric pollution;    sugarcane;    indoor air;   

DOI  :  10.21577/0103-5053.20200216

学科分类：内科医学

来源: SciELO

【 摘 要 】

Polycyclic aromatic hydrocarbons (PAH) are products of incomplete combustion of biomass and fossil fuels, that are produced on a larger scale by anthropogenic sources. Burning sugarcane plantations can be a source of atmospheric PAH in regions where this culture predominates. Campos dos Goytacazes, Brazil, is surrounded by sugarcane crops that still use fire as a facilitating method for the harvesting process. This study aims to evaluate the presence of outdoor and indoor PAH in 10 µm particulate matter (PM 10 ) at one university in Campos dos Goytacazes. PM 10 samples were collected from January to November 2018. Samples were extracted using an ultrasonic probe and analyzed by gas chromatography coupled to mass spectrometry (GC-MS). The ideal extraction conditions (3 min; 150 W; 50 mL) were defined by 2 3 full factorial design. The analysis showed a significant PM 10 level increase (23.19 to 34.50 µg m -3 in outdoor, and 15.15 to 31.66 µg m -3 in indoor samples) and higher total PAH concentration in the harvesting season (outdoor: 0.73 ng m -3 ; indoor 0.52 ng m -3 ) than in non-harvesting season (outdoor: 0.49 ng m -3 ; indoor: 0.28 ng m -3 ), however, average PAH values found in outdoor samples in harvesting season did not show significant difference from non-harvesting season.

【 授权许可】

CC BY