Chlorpyrifos degradation and its impacts on phosphorus bioavailability in microplastic-contaminated soil

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 277, P. 116378 - 116378

Published: April 24, 2024

Pesticide residues and microplastics (MPs) in agricultural soils are two major concerns for soil health food safety. The degradation of chlorpyrifos (CPF), an organophosphorus pesticide, releases phosphates. This process may be affected by the presence MPs soil. combination CPF thus produce interaction effects that alter phosphorus (P) balance. study explores pathways (6 mg kg−1, 12 kg−1 addition) with different levels polylactic acid (PLA-MPs) (0.0 %, 0.1 0.5 1.0 % w/w), analyzes P fractions phosphatase enzyme activities to investigate bioavailability under treatments. Results show fits a first-order decay model, half-lives (DT50) ranging from 11.0 14.8 d depending on PLA-MPs treatment. concentration its metabolite 3, 5, 6-trichloropyridine 2-phenol (TCP) reached peak 0.93–1.67 within 7–14 days. Similarly, led significant transient increase 3–7 days (p < 0.05), range 22.55–26.01 Olsen-P content 4.63–6.76 proportions available (H2O-P+NaHCO3-P+NaOH-P), before returning prior (Olsen-P: 11.28–19.52 kg−1; fractions: 4.15–5.61 %). kg−1) was significantly inhibited addition. occur at time frames, implying their modes action interactions microbes differ.

Language: Английский

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Comparing environmental fate and ecotoxicity of conventional and biodegradable plastics: A critical review

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175735 - 175735

Published: Aug. 24, 2024

Language: Английский

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Monitoring, control and assessment of microplastics in bioenvironmental systems

Environmental Technology & Innovation, Journal Year: 2023, Volume and Issue: 32, P. 103250 - 103250

Published: June 16, 2023

Microplastics (MPs) have garnered significant attention in recent years due to their potential detrimental effects on both bioenvironmental systems and human health. Numerous studies documented the presence of notable concentrations MPs effluent wastewater treatment plants worldwide. Consequently, adopting a life-cycle approach is crucial for sustainable management plastics. This article presents critical review focusing sources, sinks, monitoring, control, assessment systems. Initially, we analyze occurrence, fate, pathways MPs, comparing different sources sinks across various bioenvironments, including freshwater, atmosphere, terrestrial, oceans. Additionally, compare methods pretreatment, sampling, analysis MPs. Furthermore, illustrate policies aimed at controlling limiting use plastics, discuss technological advancements risk assessments associated with Finally, provide several perspectives prospects regarding priority research directions control assessment.

Language: Английский

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Adsorption and desorption of parachlormetaxylenol by aged microplastics and molecular mechanism

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175682 - 175682

Published: Aug. 22, 2024

Language: Английский

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Co-occurrence of multiple contaminants: unentangling adsorption behaviour in agricultural soils

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126118 - 126118

Published: March 1, 2025

The co-occurrence of pesticides, pharmaceuticals, and MPs has resulted in combined toxicity high risks to ecosystems human health. However, understanding on the interactions among co-occurring pollutants soils remains limited. This study focused adsorption behaviour a pesticide mixture (chlorpyrifos (CPF), pendimethalin (PDM) pyraclostrobin (PCS)) three (sandy soil (S1), loamy (S2), silt (S3)) examine absorption pesticides presence pharmaceutical compound albendazole (ALB) starch-based microplastics (MPs). results showed that ALB significantly decreased (p< 0.05) CPF, PDM, PCS by 29%-41% S1. CPF (+20%) (+101%) S2 were enhanced but PDM (-22%) was inhibited ALB. also promoted S3 39% 120%, respectively, did not change adsorption. In soil-MP matrices, reduced (-25%), (-26%), (-21%) S1-MP matrix, no significant S3-MP matrices observed. Moreover, increased 120-730%, 11-24% soils. Further, regardless presence, correlation analysis suggested Kd positive correlations 0.01) organic matter, specific surface area, clay content without MP-contamination, while between properties observed soil-MPs matrices. indicates could alter thereby affect their bioavailability mobility ecosystem. Further is urgently needed assess ecotoxicity multi-contaminants, as well potential transport other environmental compartments.

Language: Английский

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Unravelling the Ecological Ramifications of Biodegradable Microplastics in Soil Environment: A Systematic Review

Emerging contaminants, Journal Year: 2025, Volume and Issue: unknown, P. 100504 - 100504

Published: March 1, 2025

Language: Английский

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Interaction of Microplastics with Emerging Organic Pollutants: A Study on Atrazine Adsorption and Phytotoxicity

Toxics, Journal Year: 2025, Volume and Issue: 13(4), P. 257 - 257

Published: March 29, 2025

The adsorption of atrazine (ATZ) onto pristine and aged polyethylene microplastics (MPs) was investigated in distilled water (DW) hydroponic nutrient-enriched (EW) to evaluate its phytotoxic effects on Lactuca sativa germination. Aged (AMPs) exhibited higher ATZ both conditions: 0.646 mg/g (14.49%) DW 0.742 (15.87%) EW, compared 0.405 (9.08%) 0.504 (10.78%) for (PMPs), respectively. This increase attributed photodegradation-induced surface modifications MP, including increased roughness the formation oxygenated functional groups. phytotoxicity assays showed that adsorbed AMPs inhibited seed germination more severely, with a maximum inhibition 34% at 2 mg/L, evidencing microplastic aging enhances increases toxicity risks aquatic environments, particularly under eutrophic conditions. combined presence MP resulted greater toxicity, synergistic effect, as observed dry wet mass inhibition. These findings indicate pollutant interactions amplify negative impacts plant development. Furthermore, primarily affects root growth through direct physical contact rather than via desorption into water.

Language: Английский

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Toxicological evaluation and metabolic profiling of earthworms (Eisenia fetida) after exposure to microplastics and acetochlor

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121546 - 121546

Published: April 1, 2025

Language: Английский

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A highly sensitive electrochemical sensor based on surface molecularly imprinted polymers and graphene carbon nanotubes for highly selective detection of chlorpyrifos

Polymers for Advanced Technologies, Journal Year: 2024, Volume and Issue: 35(6)

Published: June 1, 2024

Abstract Pesticide residues represent a serious challenge for environmental protection, food safety, and public health. Addressing this challenge, study strategically developed an electrochemical sensor with molecularly imprinted polymers (MIPs) as the recognition element to accurately detect chlorpyrifos in samples. In study, we used vinyl‐modified SiO 2 matrix, methacrylic acid functional monomer, ethylene glycol dimethacrylate cross‐linker, azobisisobutyronitrile initiator synthesize surface‐imprinted polymers. The development of involved detailed modification electrode, first by integrating carboxylated multi‐walled carbon nanotubes graphene oxide improve its properties, then applying suspension MIPs glassy electrode. This process resulted capable detecting samples high sensitivity. sensor, designed detection, exhibited robust linear response peak current varying concentrations chlorpyrifos, ranging from 1 × 10 −11 −5 mol L −1 . It achieved detection limit low 1.85 ( S / N = 3). Testing confirmed sensor's exceptional repeatability, stability, selectivity towards underscoring efficacy. demonstrated capabilities suggest substantial potential widespread use pesticide regulation conservation efforts.

Language: Английский

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Comparison of Hexavalent Chromium Adsorption Behavior on Conventional and Biodegradable Microplastics

Water, Journal Year: 2024, Volume and Issue: 16(14), P. 2050 - 2050

Published: July 19, 2024

Microplastics are omnipresent in aquatic environments and can act as vectors to carry other pollutants, modifying their pathway through the systems. In this study, differences adsorption capacity mechanism for Cr(VI) sorption with polyethylene (PE, a conventional microplastic) polylactic acid (PLA, biodegradable were investigated via characterization of MPs, determination kinetic behavior (pseudo-first- second-order model, Elovich model), degree fit Langmuir Freundlich isothermal models; was also studied under different solution conditions. The results indicated that when dose MPs 1 g/L, on reached highest value, capacities PLA(0.415 mg/g) > PE(0.345 mg/g). PE followed isotherm while PLA had stronger model. Sorption both cases pseudo-first-order kinetics maximum (0.54 is higher than (0.38 addition, could reach equilibrium about 8 h adsorb 72.3% total within 4 h, required 16 equilibrium, suggesting adsorbs at significantly faster rate PE. Thus, like may serve superior carrier environments. When pH increased from 2 6, by decreased 0.49 mg/g 0.52 0.27 0.26 mg/g, respectively. concentration sodium dodecyl sulfate nil 300 mg/L, 3.66 3.05 times, temperature presence Cu2+ photoaging promoted salinity inhibited adsorption. desorption efficiencies PLA(57.8%) PE(46.4%). further confirmed be attributed electrostatic attraction, hydrogen bonding, surface complexation. sum, potentially better PE, but risk associated might

Language: Английский

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