Persistent organic pollutants (POPs) and personal care products (PCPs) in the surface sediments of a large tropical bay (Todos os Santos Bay, Brazil)
2020
Sotão Neto, Basílio M.T. | Combi, Tatiane | Taniguchi, Satie | Albergaria-Barbosa, Ana C.R. | Ramos, Raissa B. | Figueira, Rubens Cesar Lopes | Montone, Rosalinda C.
The occurrence and spatial distribution of persistent organic pollutants (POPs) and personal care products (PCPs) were investigated in surface sediments of Todos os Santos Bay. Samples were Soxhlet-extracted and analyzed by gas chromatography coupled with tandem mass spectrometry. Quantification limits (QL) ranged from 0.0025 ng g⁻¹ for POPs to 0.25 ng g⁻¹ for PCPs. Of the POPs studied, only PCBs and DDTs were detectable, with concentrations ranging from <QL to 4.66 ng g⁻¹, with increased concentrations near urban and industrial areas. PCPs ranged from <QL to 27.5 ng g⁻¹ and presented a homogeneous spatial distribution, probably related to the continuous inputs of these compounds from diffuse sources. Mean contaminant inventories ranged from 0.33 ± 0.23 ng cm⁻² for DDTs to 8.3 ± 8.4 ng cm⁻² for fragrances. To the best of our knowledge, this is the first study on the occurrence of UV filters in sediments from Brazilian coastal environments.
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