Bioaccumulation of organochlorine pesticides in Antarctic krill (Euphausia superba): Profile, influencing factors, and mechanisms

Xie, Jianhua; Tao, Ling; Wu, Qiang; Bian, Zhihe; Wang, Mengqiu; Li, Yingming; Zhu, Guoping; Lin, Tian

doi:10.1016/j.jhazmat.2021.128115

Cited by 11 publications

(7 citation statements)

References 81 publications

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“…the oven temperature program was as follows: from 110 to 170 °C at 1.5 °C/min (held for 5 min), from 170 to 226 °C at 2 °C/min (held for 5 min), from 226 to 280 °C at 40 °C/min, and finally kept at 280 °C for 10 min” [ 331 ] Fish 15 0.1–0.7 75–92 GC-MS [ 332 ] Fish 20 0–0.008 0.024–0.833 range a GC-ECD: “oven heating ramp to 120 °C (for 1 min) until 240 °C increasing at a rate of 4 °C min−1; EDC at 300 °C; injector at 260 °C″ [ 333 ] Fish(krill) 20 0.11–1.4 Surrogate: 80.3–137.1 GC-QqQ-MS: “initial temperature at 70 °C (held for 1 min), raised to 160 °C at 10 °C/min, raised to 280 °C at 5 °C/min and held for 5 min. Then it was raised to 300 °C at 20 °C/min and held for 5 min” [ 282 ] Fish 8 0.01–0.43 0.02–1.3 72–115 <25 GC-MS: “temperature program 80 °C for 2.5 min; then 20 °C/min ramp to 180 °C followed by 5 °C/min ramp to 230 °C and 35 °C ramp to 300 °C (held for 7 min). Total run time was 26.5 min” [ 52 ] Fish MDL: 0.001 GC-ECD: “oven temperature: 260 °C starting from 0 to 180 °C for 0.3 min and continued at 5 °C/min to 220 °C, held for 12 min, and continued at 5 °C/min to 260 °C″ [ 334 ] Fish 10 0.12 0.40 internal standards:78-95 GC-ECD: “The furnace temperature was programmed as follows: 70 °C held for 2 min, ramp at 25 °C/min to 180 °C, held for 1 min, and finally, ramp at 5 °C/min to 300 °C.…”

Section: Results and Discussion: Literature Reviewmentioning

confidence: 99%

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Ohoro,

Wepener

2023

Heliyon

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Section: Results and Discussion: Literature Reviewmentioning

confidence: 99%

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Ohoro,

Wepener

2023

Heliyon

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“…For the amphipods, δ 13 C and δ 15 N were measured as described in our previous study . Briefly, freeze-dried samples were ground into a fine powder using an agate mortar and pestle.…”

Section: Methodsmentioning

confidence: 99%

“…For the amphipods, δ 13 C and δ 15 N were measured as described in our previous study. 32 Briefly, freeze-dried samples were ground into a fine powder using an agate mortar and pestle. After this, 1.00 ± 0.05 mg of tissue was packed into a tin capsule and analyzed using an Isoprime 100 isotope ratio mass spectrometer (Isoprime Corporation, Cheadle, U.K.) and a Vario Isotope cube elemental analyzer (Elementar Analysensysteme GmbH, Hanau, Germany).…”

Section: Standards and Reagentsmentioning

confidence: 99%

Tracing Organophosphate Ester Pollutants in Hadal Trenches─Distribution, Possible Origins, and Transport Mechanisms

Xie,

Zhang,

Chen

et al. 2024

Environ. Sci. Technol.

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Unraveling the mysterious pathways of pollutants to the deepest oceanic realms holds critical importance for assessing the integrity of remote marine ecosystems. This study tracks the transport of pollutants into the depths of the oceans, a key step in protecting the sanctity of these least explored ecosystems. By analyzing hadal trench samples from the Mariana, Mussau, and New Britain trenches, we found the widespread distribution of organophosphate ester (OPE) flame retardants but a complex transport pattern for the OPE in these regions. In the Mariana Trench seawater column, OPE concentrations range between 17.4 and 102 ng L −1 , with peaks at depths of 500 and 4000 m, which may be linked to Equatorial Undercurrent and topographic Rossby waves, respectively. Sediments, particularly in Mariana (422 ng g −1 dw), showed high OPE affinity, likely due to organic matter serving as a transport medium, influenced by "solvent switching", "solvent depletion", and "filtering processes". Amphipods in the three trenches had consistent OPE levels (29.1−215 ng g −1 lipid weight), independent of the sediment pollution patterns. The OPEs in these amphipods appeared more linked to surface-dwelling organisms, suggesting the influence of "solvent depletion". This study highlights the need for an improved understanding of deep-sea pollutant sources and transport, urging the establishment of protective measures for these remote marine habitats.

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“…OCPs were first reported in Antarctic marine biota in the late 60's by Sladen et al (1966) and Taton & Ruzicka (1967). To date, their levels in different environmental compartments continue to be reported (e.g., Vergara et al, 2019;Wu et al, 2020;Krasnobaev et al, 2020;Xie et al, 2022).…”

Section: Organochlorine Pesticides (Ocps)mentioning

confidence: 99%

“…However, despite regulatory action among SC signatory nations, considerable levels of POPs are still detected in water, atmosphere, biota, and sediments worldwide due to their persistence, potential for long range transport, as well as their current emission sources (e.g., Vergara et al, 2019;Vasseghian et al, 2021;Avila et al, 2021;Die et al, 2021;García-Cegarra et al, 2021). Of utmost concern, these toxic pollutants are present in the environmental compartments of regions far from emission sources that have previously been considered pristine areas, including polar regions (Galbán-Malagón et al, 2013a;Pozo et al, 2017;Wu et al, 2020;Azcune et al, 2022;Xie et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Levels of persistent organic pollutants (POPs) in the Antarctic atmosphere over time (1980 to 2021) and estimation of their atmospheric half-lives.

Luarte

Gómez-Aburto

Poblete‐Castro

et al. 2023

Preprint

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Abstract. Persistent organic pollutants (POPs) are synthetic compounds that were intentionally produced in large quantities and have been distributed in the global environment, originating a threat due to their persistence, bioaccumulative potential and toxicity. POPs reach the Antarctic continent through long-range atmospheric transport. In these areas low temperatures play a significant role in the environmental fate of POPs, retaining them for a long-time due to cold trapping by diffusion and wet deposition, acting as net sink for many POPs. However, in the current context of climate change, remobilization of POPs trapped for decades in water, ice, and soil, is happening. Therefore, continuous monitoring of POPs in polar air is necessary to assess whether there is a recent re-release of historical pollutants back to the environment. We reviewed the scientific literature on atmospheric levels of several POPs families (polychlorinated biphenyls PCBs, hexachlorobenzene HCB, hexachlorocyclohexanes HCHs, and DDT) from 1988 to 2021. We estimated the atmospheric half-life using characteristic decreasing times (TD). We observed that HCB levels in the Antarctic atmosphere were higher than the other target OCs, but HCB also displayed higher fluctuations and did not show a significant decrease over time. Conversely, the atmospheric levels of HCHs, and some,DDTs, and PCBs have decreased significantly. The estimated atmospheric half-lives for POPs decreased in the following order: 4,4’ DDE (13.5 years) > 4,4’ DDD (12.8 years) > 4,4’ DDT (7.4 years) > 2,4’ DDE (6.4 years) > 2,4’ DDT (6.3 years) > α-HCH (6 years) > HCB (6 years) > γ-HCH (4.2 years), while for PCB congeners they decreased in the following order: PCB 153 (7.6 years) > PCB 138 (6.5 years) > PCB 101 (4.7 years) > PCB 180 (4.6 years) > PCB 28 (4 years) > PCB 52 (3.7 years) > PCB 118 (3.6 years). For HCH isomers and PCBs, the Stockholm Convention ban on POPs did have an impact on decreasing their levels during the last decades. Nevertheless, their ubiquity in the Antarctic atmosphere shows the problematic issues related to highly persistent synthetic chemicals.

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Bioaccumulation of organochlorine pesticides in Antarctic krill (Euphausia superba): Profile, influencing factors, and mechanisms

Cited by 11 publications

References 81 publications

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Tracing Organophosphate Ester Pollutants in Hadal Trenches─Distribution, Possible Origins, and Transport Mechanisms

Levels of persistent organic pollutants (POPs) in the Antarctic atmosphere over time (1980 to 2021) and estimation of their atmospheric half-lives.

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