Widespread Occurrence and Transport of p-Phenylenediamines and Their Quinones in Sediments across Urban Rivers, Estuaries, Coasts, and Deep-Sea Regions

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(6), P. 2393 - 2403

Published: Jan. 31, 2023

p-Phenylenediamines (PPDs) are widely used as antioxidants in tire rubber, and their derived quinone transformation products (PPD-Qs) may pose a threat to marine ecosystems. A compelling example is N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD)-derived quinone, called 6PPD-Q, the causal toxicant for stormwater-linked acute mortality toward coho salmon. However, knowledge of co-occurrences PPDs PPD-Qs transport from freshwater oceanic waterbodies on large geographical scale remains unknown. Herein, we performed first large-scale survey these chemicals sediments across urban rivers, estuaries, coasts, deep-sea regions. Our results demonstrated that seven four ubiquitously present riverine, estuarine, coastal sediments, most them also occur sediments. The dominant concern were identified 6PPD 6PPD-Q. Total sedimentary concentrations presented clear spatial trend with decreasing levels rivers (medians: 39.7 15.2 ng/g) estuaries (14.0 5.85 then coasts (9.47 2.97 regions (5.24 3.96 ng/g). Interestingly, variation ratios 6PPD-Q (R6PPD/6PPD-Q) trend. field measurements implied riverine outflows be an important route rubber-derived open oceans.

Language: Английский

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Occurrence and partitioning of p-phenylenediamine antioxidants and their quinone derivatives in water and sediment

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 914, P. 170046 - 170046

Published: Jan. 11, 2024

Language: Английский

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Sulfur Vacancies in Pyrite Trigger the Path to Nonradical Singlet Oxygen and Spontaneous Sulfamethoxazole Degradation: Unveiling the Hidden Potential in Sediments

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(15), P. 6753 - 6762

Published: March 25, 2024

Pharmaceutical residues in sediments are concerning as ubiquitous emerging contaminants. Pyrite is the most abundant sulfide minerals estuarine and coastal sediments, making it a major sink for pharmaceutical pollutants such sulfamethoxazole (SMX). However, research on adsorption redox behaviors of SMX pyrite surface limited. Here, we investigated impact nonphotochemical process fate coexisting SMX. Remarkably, sulfur vacancies (SVs) promoted generation nonradical species (hydrogen peroxide, H2O2 singlet oxygen, 1O2), thereby exhibiting prominent degradation performance under darkness. Nonradical 1O2 contributed approximately 73.1% total degradation. The SVs with high surrounding electron density showed an advanced affinity adsorbing O2 then initiated reactions sediment electron-storing geobattery pyrite, resulting extensive through two-electron oxygen reduction pathway. Surface Fe(III) (hydro)oxides facilitated decomposition to generation. Distinct products were observed all samples concentrations ranging from 1.96 2.94 μM, while ranged 4.63 × 10–15 8.93 M. This dark-redox pathway outperformed traditional photochemical routes pollutant degradation, broadening possibilities use sediments. Our study highlighted SV-triggered yet previously overlooked source species, which offered fresh insights into geochemical processes dynamics regions frequent oscillations sulfur-rich

Language: Английский

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Herbicide leakage into seawater impacts primary productivity and zooplankton globally

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 27, 2024

Predicting the magnitude of herbicide impacts on marine primary productivity remains challenging because extent worldwide pollution in coastal waters and concentration-response relationships phytoplankton communities to multiple herbicides are unclear. By analyzing spatiotemporal distribution at 661 bay gulf stations from 1990 2022, we determined median, third quartile maximum concentrations 12 triazine 0.18 nmol L

Language: Английский

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Spatiotemporal distribution and potential risks of antibiotics in coastal water of Beibu Gulf, South China Sea: Livestock and poultry emissions play essential effect

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133550 - 133550

Published: Jan. 24, 2024

Language: Английский

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Comprehensive evaluation of antibiotic pollution in a typical tributary of the Yellow River, China: Source-specific partitioning and fate analysis

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 488, P. 137294 - 137294

Published: Jan. 20, 2025

Language: Английский

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Source apportionment and predictable driving factors contribute to antibiotics profiles in Changshou Lake of the Three Gorges Reservoir area, China

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133522 - 133522

Published: Jan. 14, 2024

Language: Английский

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A mega study of antibiotics contamination in Eastern aquatic ecosystems of China: occurrence, interphase transfer processes, ecotoxicological risks, and source modeling

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 458, P. 131980 - 131980

Published: July 1, 2023

Language: Английский

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The occurrence of typical psychotropic drugs in the aquatic environments and their potential toxicity to aquatic organisms - A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 900, P. 165732 - 165732

Published: July 24, 2023

Language: Английский

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Distribution and adsorption-desorption of organophosphate esters from land to sea in the sediments of the Beibu Gulf, South China Sea: Impact of seagoing river input

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 917, P. 170359 - 170359

Published: Jan. 26, 2024

Language: Английский

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