Nontarget and suspect screening reveals the presence of multiple plastic-related compounds in polar bear, killer whale, narwhal and long-finned pilot whale blubber from East Greenland

Environmental Pollution, Год журнала: 2024, Номер 357, С. 124417 - 124417

Опубликована: Июнь 21, 2024

The monitoring of legacy contaminants in sentinel northern marine mammals has revealed some the highest concentrations globally. However, investigations into presence chemicals emerging Arctic concern (CEACs) and other lesser-known are rarely conducted, if at all. Here, we used a nontarget/suspect approach to screen for thousands different chemicals, including many CEACs plastic-related compounds (PRCs) blubber/adipose from killer whales (Orcinus orca), narwhals (Monodon monoceros), long-finned pilot (Globicephala melas), polar bears (Ursus maritimus) East Greenland. 138 were tentatively identified mostly as PRCs, four confirmed using authentic standards: di(2-ethylhexyl) phthalate (DEHP), diethyl (DEP), di(2-propylheptyl) (DPHP), one antioxidant (Irganox 1010). Three nonylphenol isomer, 2,6-di-tert-butylphenol, dioctyl sebacate, exhibited fragmentation patterns matching those library databases. While phthalates only above detection limits bear narwhal, Irganox 1010, nonylphenol, 2,6-di-tert-butylphenol detected >50% all samples. This study represents first application screening cetaceans, leading identification multiple PRCs their blubber. Further nontarget analyses warranted comprehensively characterize extent CEAC PRC contamination within food webs.

Язык: Английский

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Patterns of Personal Exposure to Urban Pollutants Using Personal Passive Samplers and GC × GC/ToF–MS

Environmental Science & Technology, Год журнала: 2018, Номер 53(2), С. 614 - 624

Опубликована: Дек. 21, 2018

The performance of silicon wristband passive samplers (WB), combined with comprehensive two-dimensional gas-chromatography/time-of-flight mass-spectrometry (GC × GC/ToF–MS), for the analysis urban derived pollutants in personal environment was evaluated. Cumulative 5-day exposure samples from 27 individuals areas different geographical/socioeconomic characteristics within Santiago Metropolitan Region (Chile) were collected during winter and summer (2016–2017). Samples extracted without cleanup/fractionation analyzed using targeted nontargeted methods. quantified semivolatile organic compounds (SVOCs, n = 33) (targeted analysis), tentatively identified features (n 595–1011) (nontargeted analysis) classified according to their use/source. Seasonal differences observed analysis, while seasonal spatial analysis. Higher concentrations combustion products winter, higher consumer found summer. Spatial hierarchical clustering data, distinct clusters corresponding specific subregions area. Results this study provide distributions an area establish utility linking WB as a tool identify prioritize new exposures contaminants at local/community level.

Язык: Английский

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Palladium nanoparticles assembled on titanium nitride for enhanced electrochemical hydrodechlorination of 2,4-dichlorophenol in water

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2018, Номер 39(4), С. 693 - 700

Опубликована: Апрель 1, 2018

Язык: Английский

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Non-targeted screening workflows for gas chromatography–high-resolution mass spectrometry analysis and identification of biomagnifying contaminants in biota samples

Analytical and Bioanalytical Chemistry, Год журнала: 2020, Номер 413(2), С. 479 - 501

Опубликована: Ноя. 6, 2020

Abstract The health of key species in the Baltic region has been impaired by exposure to anthropogenic hazardous substances (AHSs), which accumulate organisms and are transferred through food chains. There is, thus, a need for comprehensive characterization occurrence accumulation AHSs ecosystem. In this study, we use non-target screening (NTS) approach purpose. A major challenge NTS biological samples is removal matrix components such as lipids that may interfere with detection identification compounds interest. Here, combine gel permeation chromatography Florisil ® column fractionation achieve sufficient lipid gas chromatography–high-resolution mass spectrometry analysis using electron ionization (EI) capture negative ion chemical (ECNI). addition, present new data processing workflows designed systematically find identify frequently occurring biomagnifying AHSs, including known, emerging, contaminants. Using these workflows, discovered wide range contaminants tissue from blue mussels, fish, marine mammals, calculated their biomagnification factors (BMFs). Compounds BMFs above 1 herring at least one mammal included legacy chlorinated pollutants (polychlorinated biphenyls, DDTs, chloro-benzenes/cyclohexanes, chlordanes, toxaphenes, dieldrin), polybrominated diphenyl ethers (PBDEs), brominated biphenyls. However, there were also several halogenated natural products (halogenated methoxylated ethers, 1′-methyl-1,2′-bipyrroles, 1,1′-dimethyl-2,2′-bipyrroles, monoterpene mixed compound 1) well novel flame retardant Dechlorane 602 polycyclic aromatic hydrocarbons, terpenoids, steroids. exhibited expected behavior, demonstrating utility unguided workflow.

Язык: Английский

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Will Climate Change Influence Production and Environmental Pathways of Halogenated Natural Products?

Environmental Science & Technology, Год журнала: 2020, Номер 54(11), С. 6468 - 6485

Опубликована: Май 4, 2020

Thousands of halogenated natural products (HNPs) pervade the terrestrial and marine environment. HNPs are generated by biotic abiotic processes range in complexity from low molecular mass halocarbons (nHCs, mostly halomethanes haloethanes) to compounds higher which often contain oxygen and/or nitrogen atoms addition halogens (hHNPs). nHCs have a key role regulating tropospheric stratospheric ozone, while some hHNPs bioaccumulate toxic properties similar those anthropogenic-persistent organic pollutants (POPs). Both chemical classes common sources: biosynthesis bacteria, phytoplankton, macroalgae, invertebrate animals, both may be similarly impacted alteration production transport pathways changing climate. The scientific community is advanced investigating sources, atmospheric oceanic transport, forecasting climate change impacts through modeling. By contrast, these activities nascent or nonexistent for hHNPs. goals this paper (1) review production, distribution, water air, pointing out areas commonality, (2) analogy nHCs, argue that alter factors hHNPs, (3) suggest steps improve linkage between science better understand predict impacts.

Язык: Английский

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High-performance nontarget analysis of halogenated organic compounds in tap water, fly ash, soil and sediment using ultrahigh resolution mass spectrometry and scripting approaches based on Cl/Br-specific search algorithms

Analytica Chimica Acta, Год журнала: 2022, Номер 1204, С. 339618 - 339618

Опубликована: Фев. 17, 2022

Язык: Английский

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Assessing Marine Endocrine-Disrupting Chemicals in the Critically Endangered California Condor: Implications for Reintroduction to Coastal Environments

Environmental Science & Technology, Год журнала: 2022, Номер 56(12), С. 7800 - 7809

Опубликована: Май 17, 2022

Coastal reintroduction sites for California condors (Gymnogyps californianus) can lead to elevated halogenated organic compound (HOC) exposure and potential health impacts due the consumption of scavenged marine mammals. Using nontargeted analysis based on comprehensive two-dimensional gas chromatography coupled time-of-flight mass spectrometry (GC×GC/TOF-MS), we compared HOC profiles plasma from inland coastal scavenging state (CA), mammal blubber CA Gulf off Baja (BC), Mexico. We detected more HOCs in (32 ± 5, mean number SD, n = 7) than (8 1, 10) mammals (136 87, 25) BC (55 46, 8). ∑DDT-related compounds, ∑PCBs, total tris(chlorophenyl)methane (∑TCPM) were, respectively, ∼7, ∼3.5, ∼148 times abundant The endocrine-disrupting selected polychlorinated biphenyls (PCB) congeners, TCPM, TCPMOH was determined by vitro condor estrogen receptor (ER) activation. higher levels those lower contamination are factors consider efforts.

Язык: Английский

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Comprehensive Screening Links Halogenated Organic Compounds with Testosterone Levels in Male Delphinus delphis from the Southern California Bight

Environmental Science & Technology, Год журнала: 2018, Номер 52(5), С. 3101 - 3109

Опубликована: Фев. 4, 2018

While environmental pollutants have been associated with changes in endocrine health cetaceans, efforts to link contaminant exposure hormones largely limited a list of known, targeted contaminants, overlooking minimally characterized or unknown compounds emerging concern. To address this gap, we analyzed suite potential disrupting halogenated organic (HOCs) blubber from 16 male short-beaked common dolphins (Delphinus delphis) known maturity status collected fishery bycatch the Southern California Bight. We employed suspect screening mass spectrometry-based method investigate wide range HOCs that were previously observed cetaceans same region. Potential effects assessed through measurement testosterone. detected 167 HOCs, including 81 anthropogenic sources, 49 origin, and 37 natural sources. The sum 11 4 HOC classes negatively correlated Evidence suggests elevated load contributes impaired testosterone production mature D. delphis. application integrative analytical approach cetacean analysis allows for inference biological consequences accumulation prioritization future toxicology research.

Язык: Английский

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The Urgent Challenge of Ocean Pollution: Impacts on Marine Biodiversity and Human Health

Regional Studies in Marine Science, Год журнала: 2024, Номер unknown, С. 103995 - 103995

Опубликована: Дек. 1, 2024

Язык: Английский

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Comprehensive Screening of Anthropogenic and Natural Organohalogen Compounds in 11 Species of Toothed Whales Stranded along Japanese Coasts: Species-Specific Accumulation Profiles and Potential Indicators for Understanding Their Habitats

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Comprehensive screening studies have revealed the accumulation of a large number routinely unmonitored organohalogen compounds (OHCs) in cetaceans. However, these previous targeted only limited whale species. In this study, we conducted and quantitative analyses to comprehensively identify OHCs accumulated 48 adult male blubber samples 11 species elucidate species-specific profiles. A total 313 were detected samples. Quantification semiquantification results for anthropogenic halogenated natural products (HNPs) showed compound- patterns. Polychlorinated terphenyls Cl5–7-substituted homologues dichlorodiphenyldichloroethylenes significantly coastal cetaceans, whereas hexachlorocyclohexanes hexachlorobenzene more prominent cold-water species, suggesting influence mobility from sources. addition, cluster analysis specific HNP profiles different habitats. Therefore, profile each can be useful indicator their habitat migration patterns as may reflect interspecies differences exposure associated with habitat-specific preys.

Язык: Английский

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