Multiresidue determination and predicted risk assessment of contaminants of emerging concern in marine sediments from the vicinities of submarine sewage outfalls

Abstract

Submarine sewage outfalls (SSOs) are considered the main input source of contaminants of emerging concern continuously released in coastal areas, with the potential to cause adverse effects for aquatic organisms. This work presents the investigation of nine endocrine disrupting chemicals (EDCs) and 26 pharmaceutically active chemicals (PhACs) in marine sediments within the vicinities of 7 SSOs along the São Paulo State Coast (Brazil). Method optimization for the multi-residue determination by GC-MS/MS and LC-MS/MS using QuEChERS extraction/clean-up are discussed. Results demonstrate the occurrence of EDCs in concentrations ranging from less than method quantification limits (MQL) to 72.5 ng g in sediments. All PhACs were <MQLs. Nonylphenol was the most ubiquitous compound and the diversity of EDCs increased with an increase in populations serviced by SSOs. The predicted environmental risk assessment considering measured environmental concentrations and ecotoxicity endpoints from literature suggest a high-risk potential in some of the investigated SSOs.

Simultaneous Analysis of Multiclass Contaminants of Emerging Concern in Sediments by Liquid Chromatography with Tandem Quadrupole Mass Spectrometry

“…However, residues of bisphenol F and tetrabromobisphenol A were detected only by the proposed method in the sediment wileyonlinelibrary.com/ETC © 2019 SETAC 5: Comparison of the method detection limit a for different contaminants of emerging concern (CECs) by the proposed approach and various procedures from the literature samples. Contaminants of emerging concern levels in the sediment samples were almost similar to those reported in earlier studies (Bay et al 2012;Elliott et al 2017;Dos Santos et al 2018). The comparative analysis of the quality control and the real samples indicated the ability of the proposed method to perform equally compared with the USEPA method in the presence of real sediment matrix for a wide variety of CECs.…”

“…This approach was originally developed for low-fat fruit and vegetable matrices (Anastassiades et al 2003); subsequently, it was successfully applied for a variety of matrices and analytes by both gas and liquid chromatography techniques (Vera et al 2013;González-Curbelo et al 2015;Rejczak and Tuzimski 2015). Lately, this method, with some modifications, has been used to identify CECs in solid matrices such as animal feed (Lopes et al 2012), seafood (Cunha et al 2012), animal tissues (Pouech et al 2012;Berge and Vulliet 2015;Yao et al 2016), sewage sludge (Peysson and Vulliet 2013;Cerqueira et al 2014), sediments (Berlioz-Barbier et al 2014;Carmona et al 2014;Czech et al 2016;Santos et al 2016;Dos Santos et al 2018), and manure (Guo et al 2016). Berlioz-Barbier et al utilized QuEChRS for the first time to document 15 CECs (PPCPs, pesticides, and hormones) in sediment samples.…”

Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China

“…HBCD has been found in natural ecosystems around the world, so the potential effects of these compounds on organisms in sediment, soil, and water have become an important subject for research. Risk quotient (RQ) method was used to perform the ecological risk assessment to estimate the potential toxicity related to exposure HBCD at the concentration that was found in the sediment samples [ 46 , 47 , 48 , 49 ]. The RQ method is considered to be the most effective method for assessing the risks posed by contaminants to aquatic organisms.…”

Natural factors and chemical contamination control the structure of macrobenthic communities in the Santos Estuarine System (SP, Brazil)

“…To date, sediments from the SES still present elevated concentrations of several chemicals at toxic levels for benthic organisms (Torres et al 2009, Pereira et al 2016, Santos et al 2018 and some authors have shown that benthic macrofaunal assemblages are altered (Tommasi 1979, Abessa et al 2008, Buruaem et al 2013. These studies highlighted that pollution caused the changes, but they could not discern definitively if the alterations were due to natural factors, contaminants or a combination of both.…”