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PAH Profiles in Suspended Particulate Matter from an Urbanized River Within the Brazilian Amazon

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Abstract

The distribution, seasonal variation and sources of 16 polycyclic aromatic hydrocarbons (PAH) from suspended particulate matter (SPM) of the Aurá River, a small amazon typical river located in Northern Brazil, were determined. Gas chromatography–mass spectrometry analysis of SPM revealed a mixture of PAH from different origins and a seasonal variation of PAH primary source for the studied area. Pyrene was the dominant PAH in both studied periods. Total PAH content (ΣPAH) ranged from lower than quantification limit (< LOQ) to 2498.2 ng g−1 dw during the dry season and < LOQ to 2865.8 ng g−1 dw during the wet season. Low molecular weight PAH (LMW) represented 51% of ΣPAH during the dry season and 29% during the wet season. It was noted, by comparing previous data, that the main source of these compounds was altered after the deactivation of an irregular landfill next to the river.

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Acknowledgements

The authors thank the National Council for Scientific and Technological Development (CNPq) (130797/2017-1).

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Correspondence to L. C. Sousa.

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Sousa, L.C., Rodrigues, C.C.S., Mendes, R.A. et al. PAH Profiles in Suspended Particulate Matter from an Urbanized River Within the Brazilian Amazon. Bull Environ Contam Toxicol 105, 86–94 (2020). https://doi.org/10.1007/s00128-020-02912-y

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  • DOI: https://doi.org/10.1007/s00128-020-02912-y

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