Small-Intensity Rainfall Triggers Greater Contamination of Rubber-Derived Chemicals in Road Stormwater Runoff from Various Functional Areas in Megalopolis Cities

Environmental Science & Technology, Год журнала: 2024, Номер 58(29), С. 13056 - 13064

Опубликована: Июнь 20, 2024

Rubber-derived chemicals (RDCs) originating from tire and road wear particles are transported into stormwater runoff, potentially threatening organisms in receiving watersheds. However, there is a lack of knowledge on time variation novel RDCs limiting initial rainwater treatment subsequent resource utilization. In this study, we investigated the levels time−concentration profiles 35 target runoff eight functional areas Greater Bay Area, South China. The results showed that total concentrations were highest expressway compared with other seven areas. N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD), 6PPD-quinone, benzothiazole, 1,3-diphenylguanidine top four highlighted (ND−228840 ng/L). Seasonal spatial differences revealed higher RDC dry season as well less-developed regions. A lag effect reaching peak was revealed, 10−90 min expressways. Small-intensity rainfall triggers greater contamination rubber-derived runoff. Environmental risk assessment indicated 35% posed high risk, especially PPD-quinones (risk quotient up to 2663). Our findings contribute better understanding managing for pollution.

Язык: Английский

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Mind your tyres: The ecotoxicological impact of urban sediments on an aquatic organism

The Science of The Total Environment, Год журнала: 2024, Номер 951, С. 175597 - 175597

Опубликована: Авг. 17, 2024

The presence of tyre and road wear particles (TRWP) in the environment is an underestimated threat due to their potential impact on ecosystems human health. However, mode action impacts aquatic remain largely unknown. In present study, we adopted a sediment exposure scenario investigate influence coming from urban runoff sedimentation basin life cycle Chironomus riparius. Targeted broad-spectrum chemical analysis helped characterise sediments confirmed significant contribution contaminants traffic (e.g. contribution, Polycyclic Aromatic Hydrocarbons [PAHs], metals, rubber additives). First-stage chironomid larvae were subjected increasing concentrations whole sediment. results showed that this influenced all measured endpoints. vivo quantification ROS exposed lowest concentration contaminated exhibited increased fluorescence. conditions mortality by almost 30 %, but effect was surprisingly not concentration-dependent. Fertility decreased significantly concentration-dependently. Mean Emergence Time (EmT50) larval size optimality curve. Furthermore, as consequence effects fitness, Population Growth Rate (PGR) decrease, which Therefore, after single generation, PGR calculation can be sensitive tool monitor pollution caused complex matrices, i.e. composed several contaminants. Our research highlights importance effective management underlines need for further investigation better understand toxicity TRWPs.

Язык: Английский

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Precipitation contributes to alleviating pollution of rubber-derived chemicals in receiving watersheds: Combining confluent stormwater runoff from different functional areas

Water Research, Год журнала: 2024, Номер 264, С. 122240 - 122240

Опубликована: Авг. 10, 2024

Язык: Английский

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Synthesis, spectroscopic characterization, DFT-D2 analysis and BSA binding studies of Co(II), Ni(II) and Cu(II) complexes with a novel Benzothiazole-based ligand

Transition Metal Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Язык: Английский

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Contamination by benzothiazoles in the Arctic: first evidence in the seawater of the Greenland Sea

Environmental Pollution, Год журнала: 2025, Номер 371, С. 125943 - 125943

Опубликована: Фев. 27, 2025

Язык: Английский

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Experimental and Theoretical Investigation of 2-Methylbenzothiazole Oxidation by OH in Air and the Role of O₂ and NO

The Journal of Physical Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Benzothiazoles are in widespread use as components of, or precursors to, a variety of consumer and industrial products. This class compounds encompasses the simplest molecule benzothiazole (BTH) which benzene ring is fused to thiazole ring, well series derivatives commonly functionalized at C2 position ring. The addition groups this modifies reactivity ways that not well-known. While reactions benzothiazoles water have been subject investigation, part for wastewater treatment applications, much less known about their atmospheric where gas phase oxidation by OH radical expected dominate. We report here studies kinetics, products, mechanism reaction 2-methylbenzothiazole (MeBTH) with using combination experiments theory. Comparison previous BTH highlights impact substitution methyl group 2-position on products reactivity. Specifically, rate constant 298 K 1 atm pressure MeBTH-OH (3.0 ± 0.4) × 10-12 cm3 molecule-1 s-1 (1σ), 50% faster than BTH. In addition, attack -CH3 form aldehyde stable product becomes important, accounting ∼ 33% overall reaction. Formation phenol-type from accounts remainder, experimental relative yields consistent theoretical predictions based energies formation prereaction MeBTH···OH complex. (2-CHO-BTH) involves sequence five distinct stages involving two oxygen molecules one NO. Both processes involve spin flip unpaired electrons, enables transition between electronic states essential proceed. Using room temperature constant, estimated lifetimes MeBTH air range 9 h 4 days over concentrations 107 - 106 cm-3. Thus, represents significant loss process both outdoors indoors, exposures toxicity parent its need be taken into account assessments environmental fates.

Язык: Английский

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Insights into size-segregated distribution of benzothiazoles in indoor aerosol from office environments

Environmental Science Atmospheres, Год журнала: 2024, Номер 4(5), С. 571 - 577

Опубликована: Янв. 1, 2024

Understanding the impact of rubber-derived particles on indoor environmental quality is crucial for effective management.

Язык: Английский

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Application of Mesoporous Silicas for Adsorption of Organic and Inorganic Pollutants from Rainwater

Materials, Год журнала: 2024, Номер 17(12), С. 2917 - 2917

Опубликована: Июнь 14, 2024

Precipitation is an important factor that influences the quality of surface water in many regions world. The pollution stormwater runoff from roads and parking lots understudied area research. Therefore, a comprehensive analysis physicochemical properties rainwater flowing was carried out, considering heavy metals organic micropollutants. High concentrations zinc were observed rainwater, addition to alkanes, e.g., tetradecane, hexadecane, octadecane, 2,6,10-trimethyldodecane, 2-methyldodecane; phenolic derivatives, such as 2,6-dimethoxyphenol 2,4-di-tertbutylphenol; compounds benzothiazole. To remove contaminants present adsorption using silica carriers MCF (Mesostructured Cellular Foams) type performed. Three groups modified prepared, i.e., (1) SH (thiol), (2) NH2 (amino), (3) NH2/SH (amine thiol functional groups). research problem, which addressed presented article, concerned with carrier influence group on efficiency study included evaluation effects dose time contaminant removal process, well isotherms reaction kinetics. colour 94-95% for MCF-NH2 MCF-NH2/SH. Zinc adsorbance at level 90% MCF-NH2, MCF-NH2/SH, 52%. Studies have shown high efficacy (100%) removing micropollutants, especially On other hand, octadecane least susceptible each case. It found highest micropollutants ions obtained through use functionalized NH2.

Язык: Английский

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Occurrence of tyre-derived particles in size-segregated aerosol in the urban area of Venice

Atmospheric Environment, Год журнала: 2024, Номер 337, С. 120784 - 120784

Опубликована: Авг. 27, 2024

Benzothiazoles (BTHs), commonly used in various industrial applications, have emerged as significant contaminants due to their widespread usage and potential adverse effects on ecosystems human health. The aim of this study is quantify and, for the first time, characterize particle size distribution eight BTHs across twelve fractions atmospheric aerosol representative urban boundary layer. Samples were collected from August October 2023 area Venice, located Po Valley, known its poor air quality. Instrumental analysis was achieved via an UHPLC system coupled with a triple quadrupole mass spectrometer. All target compounds present samples analyzed most them tended distribute mainly fine fraction (<1.8 μm). An exception given by BTH-SO3H, which presents bimodal maxima centered coarse fraction; may imply different source compared other BTHs. BTH-SH abundant benzothiazole derivative, suggesting tyre debris main since it compound vulcanizing accelerators rubber manufacture. Given mutagenic properties, high relative abundance could be concern work provide valuable insights into aerosols, laying groundwork future research aimed at better understanding sources environmental pathways, fate impacts.

Язык: Английский

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Probing the microbiome in stormwater pipeline sediments: Co-occurrence patterns and novel functionalities

Current Research in Biotechnology, Год журнала: 2024, Номер 7, С. 100199 - 100199

Опубликована: Янв. 1, 2024

Stormwater pipeline is an essential pathway to transfer stormwater runoff into nearby receiving water bodies. Understanding the composition, co-occurrence patterns, and function of microbial communities in sediments can help provide management control strategies for pollution safeguard safety ecological health urban environment. This study employs 16S rRNA gene amplicon sequencing probe a highly urbanized area Guangzhou, China. Results show that sediment bacterial community rich Listeria, Prevotella, Stenotrophomonas, Pseudomonas, which all pertain pathogens. Methanogens (Methanobacterium, Methanosaeta, Methanosarcina, Methanobrevibacter) ammonia-oxidizing archaea (Ca. Nitrosopelagicus, Ca. Nitrososphaera, Nitrosotenuis) dominated archaeal sediments. These functions are further validated by prediction overall community. The network microbe-environment correlation analyses suggest particulate C-N-P components play more crucial role, comparison dissolved ones regulating microbiome, although not samples follow this mechanism. findings expected contribute systems valuable guidance improving environmental well-being ecosystems.

Язык: Английский

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