Occurrence of halogenated natural products in highly consumed fish from polluted and unpolluted tropical bays in SE Brazil

Estrella, Leonardo Fontes; Ferreira, Verona Borges; Gallistl, Christoph; Alves, M.G.R.; Vetter, Walter; Malm, Olaf; Finco, Fernanda Dias Bartolomeu Abadio; Torres, João Paulo Machado

doi:10.1016/j.envpol.2018.07.030

Cited by 12 publications

(11 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overall, the Q1 concentrations at the two sites of South Africa were comparable with Q1 in the sardines (Sardinella brasiliensis) (47 ng/g lm) from Brazil (Ilha Grande Bay, Rio de Janeiro). 13 The samples not only featured Q1 but also PMBP congeners with one to three bromine 2). Unfortunately, the natural producer of Q1 and PMBPs is still unknown.…”

Section: ■ Resultsmentioning

confidence: 99%

“…Patterns of bromine containing polyhalogenated 1′-methyl-1,2′bipyrroles (PMBPs) (Br x Cl y , x + y = 7) were determined by GC/ ECNI-MS according to the methods of Hauler et al and Vetter et al 10,28 Powdered solid chokka squid and sardine samples (∼2 mg) were accurately weighed into tin capsules for solids. Then, bulk stable carbon (δ 13 C values (‰)) and stable nitrogen (δ 15 N values (‰)) isotope analysis was performed in triplicate using elemental analysis− stable isotope ratio mass spectrometry (EA−IRMS) according to the method of Krauß and Vetter. 29 The oxidation and reduction furnaces were heated to 1000 and 650 °C, respectively.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…The same species of a marine organism from different oceans also shows different compositions of HNPs. 10,13 In this geographical context, South Africa is quite interesting as its coastline includes both the South Atlantic and Indian Oceans (Figure S1). However, most studies on the contaminants in South African marine biota focused on anthropogenic pollutants.…”

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polyhalogenated Compounds (Halogenated Natural Products and POPs) in Sardine (Sardinops sagax) from the South Atlantic and Indian Oceans

Schlag

Uren

et al. 2020

J. Agric. Food Chem.

View full text Add to dashboard Cite

Halogenated natural products (HNPs) and persistent organic pollutants (POPs) were quantified in South African sardines (Sardinops sagax) from one site in the South Atlantic Ocean and one in the Indian Ocean. At both sites, HNPs [2,3,3′,4,4′,5,5′-heptachloro-1′-methyl-1,2′-bipyrrole (Q1), mixed halogenated compound 1 (MHC-1), 2,4,6-tribromoanisole (2,4,6-TBA), 2′-MeO-BDE 68 (BC-2), and 6-MeO-BDE 47 (BC-3)] were 1 order of magnitude higher concentrated than anthropogenic POPs [mainly polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT), ∼3 ng/g lipids]. MHC-1 and Q1 were the major HNPs in the samples from both sites, contributing with up to 49 and 52 ng/g lipids, respectively. The same 1,1-dichloro-2,2-bis(4-chlorophenyl)ethane (p,p′-DDE)/PCB ratio suggested that the major POPs were evenly distributed at both sites. Different ratios of Q1/MHC-1 in the samples from the Indian (∼2:1) and South Atlantic (∼1:1) Oceans indicated that the occurrence of HNPs in seafood is difficult to predict and should be investigated more in detail. The PCB levels in sardines were found to pose no risk to human consumers, whereas HNPs could not be evaluated because of the lack of toxicological data.

show abstract

Section: ■ Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polyhalogenated Compounds (Halogenated Natural Products and POPs) in Sardine (Sardinops sagax) from the South Atlantic and Indian Oceans

Schlag

Uren

et al. 2020

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…The individual tropical tuna muscle samples from Mozambique showed remarkably high HNP levels of up to 3860 ng/g lw (with a main contribution of BC-2). This concentration was among the highest ΣHNP levels determined to date in fish (Covaci et al 2008;Estrella et al 2018;Kelly et al 2008). Interestingly, the Mozambique Channel has been described as an important feeding area for tropical tunas (Chassot et al 2019).…”

Section: Resultsmentioning

confidence: 81%

“…One reason could be variations in the dietary intake of HNPs (indicative of hotspots) combined with a non-equilibrium partitioning between the two tissues. Especially, in the case of HNPs, it is known that concentrations can strongly vary in low trophic biota (prey) within short distances (Hauler et al 2014 ; Barón et al 2015 ; Estrella et al 2018 ). By contrast, R L/L+M values for PCB 153 and p,p’ -DDE were ≤0.5 (Table 2 ).…”

Section: Resultsmentioning

confidence: 99%

High levels of halogenated natural products in large pelagic fish from the Western Indian Ocean

Munschy

Aminot

et al. 2021

Environ Sci Pollut Res

View full text Add to dashboard Cite

Concentrations, profiles and muscle-liver distribution of halogenated natural products (HNPs) and anthropogenic persistent organic pollutants (POPs) were investigated in five large pelagic fish species and one smaller planktivore fish species from the Western Indian Ocean. Analysis of swordfish muscle from the Seychelles revealed the predominance of HNPs, with the highest concentrations found for 2′-methoxy-2,3′,4,5′- tetraBDE (2′-MeO-BDE 68 or BC-2), 6-methoxy-2,2′,4,4′- tetraBDE (6-MeO-BDE 47 or BC-3) and 2,3,3′,4,4′,5,5′-heptachloro-1′-methyl-1,2′-bipyrrole (Q1), along with varied contributions of further HNPs. The mean concentration of ∑HNPs (330 ng/g lw) was one or two orders of magnitude higher than ∑DDTs (60 ng/g lw) and ∑PCBs (6.8 ng/g lw). HNPs (BC-2, BC-3 and Q1) were also predominant in individual samples of three tropical tuna species from the Seychelles and from other regions of the Western Indian Ocean (Mozambique Channel, off Somalia and Chagos Archipelago). Non-targeted gas chromatography coupled with electron capture negative ion mass spectrometry operated in the selected ion monitoring mode (GC/ECNI-MS-SIM) analysis of one swordfish sample indicated low abundance of rarely reported HNPs (three hexachloro-1′-methyl-1,2′-bipyrrole (Cl6-MBP) isomers and pentabromo-1,1′-dimethyl-2,2′-bipyrroles (Br5-DBP)) but no further abundant unscreened polyhalogenated compounds.

show abstract

A review of halogenated natural products in Arctic, Subarctic and Nordic ecosystems

Bidleman

Andersson

Jantunen

et al. 2019

Emerging Contaminants

View full text Add to dashboard Cite

Occurrence of halogenated natural products in highly consumed fish from polluted and unpolluted tropical bays in SE Brazil

Cited by 12 publications

References 40 publications

Polyhalogenated Compounds (Halogenated Natural Products and POPs) in Sardine (Sardinops sagax) from the South Atlantic and Indian Oceans

Polyhalogenated Compounds (Halogenated Natural Products and POPs) in Sardine (Sardinops sagax) from the South Atlantic and Indian Oceans

High levels of halogenated natural products in large pelagic fish from the Western Indian Ocean

A review of halogenated natural products in Arctic, Subarctic and Nordic ecosystems

Contact Info

Product

Resources

About