Recent advancements in the applications of separation and enrichment strategies towards SERS detection

TrAC Trends in Analytical Chemistry, Journal Year: 2025, Volume and Issue: 184, P. 118136 - 118136

Published: Jan. 7, 2025

Language: Английский

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Superhydrophobic Surface-Enhanced Raman Spectroscopy (SERS) Substrates for Sensitive Detection of Trace Nanoplastics in Water

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Nanoplastics, emerging as pervasive environmental pollutants, pose significant threats to ecosystems and human health due their small size potential toxicity. However, detecting trace levels of nanoplastics remains challenging because limitations in the current analytical methods. Herein, we propose a method that combines superhydrophobic enrichment with SERS analysis for aqueous environments. Superhydrophobic substrates were prepared by using liquid-liquid self-assembly method. The superhydrophobicity facilitated analyte enrichment, monolayer Au nanoparticles (AuNPs) enhanced Raman signals. detection limit probe crystal violet (CV) this substrate reached nanomolar (10-9 M), an RSD 9.96% across 40 × μm2 area (441 spots), demonstrating excellent sensitivity reproducibility. This successfully detected polystyrene (PS) plastics ranging from 30 1000 nm water concentrations low 0.03 μg/mL. Additionally, nanoscale polyethylene terephthalate (PET) particles bottled samples. approach offers promising platform analyzing samples addresses needs monitoring.

Language: Английский

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Size-dependent toxicity of polystyrene microplastics on the gastrointestinal tract: Oxidative stress related-DNA damage and potential carcinogenicity

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169514 - 169514

Published: Dec. 20, 2023

Language: Английский

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Nanomaterial-mediated self-calibrating biosensors for ultra-precise detection of food hazards: Recent advances and new horizons

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216204 - 216204

Published: Sept. 10, 2024

Language: Английский

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Nondestructive analysis of plastic debris from micro to nano sizes: A state-of-the-art review on Raman spectroscopy-based techniques

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 176, P. 117750 - 117750

Published: May 7, 2024

Language: Английский

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Occurrence, toxicity and removal of polystyrene microplastics and nanoplastics in human sperm

Environmental Chemistry Letters, Journal Year: 2024, Volume and Issue: 22(5), P. 2159 - 2165

Published: May 30, 2024

Language: Английский

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Exposure to polyethylene and polyvinylchloride microplastics caused advanced puberty onset in females through promoting hypothalamic GnRH expression

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 291, P. 117906 - 117906

Published: Feb. 1, 2025

Precocious puberty (PP) is a common pediatric endocrine disorder that affects children's growth and sexual development. Environmental pollutants, especially microplastics (MPs), may be an important triggering factors in PP. MPs were widely found living environment, while the impact of on pubertal development remains unknown. In this study, 14 serum samples collected from central precocious (CPP) girls healthy controls. The concentration total CPP (68.19 ± 26.49 mg/kg) showed significant increase than controls (36.94 13.22 mg/kg). 5 11 types detected, among which PE (CPP, 28.22 %; Control, 31.62 %) PVC 62.67 58.14 being dominant ones. Correlation analysis between sex hormone revealed negatively correlated with progesterone positively dehydroepiandrosterone (DHEAS). order to investigate toxic effects onset, young female mice at 21 days orally administered various concentrations for two weeks. Female exposed (PE, 3 mg/day; PVC, 6 mg/day) had advanced vaginal opening, none changes body weight. Immunohistochemical staining demonstrated exposure during could activate microglia, astrocytes promote GnRH expression hypothalamus, leading earlier onset. These data suggested can absorbed accumulated brain gonad after gavage, accelerate initiation. This study provided valuable evidence threatened normal progression

Language: Английский

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The Raman spectroscopy combined with selective state-space algorithm for constructing a rapid disease diagnosis model

Chemometrics and Intelligent Laboratory Systems, Journal Year: 2025, Volume and Issue: unknown, P. 105375 - 105375

Published: March 1, 2025

Language: Английский

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Co-exposure to polystyrene nanoplastics and triclosan induces synergistic cytotoxicity in human KGN granulosa cells by promoting reactive oxygen species accumulation

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 273, P. 116121 - 116121

Published: Feb. 24, 2024

In recent years, nanoplastics (NPs) and triclosan (TCS, a pharmaceutical personal care product) have emerged as environmental pollution issues, their combined presence has raised widespread concern regarding potential risks to organisms. However, the toxicity mechanisms of NPs TCS remain unclear. this study, we investigated toxic effects polystyrene on KGN cells, human ovarian granulosa cell line. We exposed cells (150 μg/mL) (15 μM) alone or together for 24 hours. Co-exposure significantly reduced viability. Compared with exposure alone, co-exposure increased reactive oxygen species (ROS) production. Interestingly, produced synergistic effects. examined activity superoxide dismutase (SOD) catalase (CAT), two antioxidant enzymes; it was decreased after co-exposure. also noted an increase in lipid oxidation product malondialdehyde (MDA) Furthermore, had more detrimental effect mitochondrial function than individual treatments. activated NRF2–KEAP1–HO-1 stress pathway. Surprisingly, expression SESTRIN2, protein, inhibited by autophagy-related proteins LC3B-II LC3B-Ⅰ P62. Moreover, enhanced CASPASE-3 BCL-2/BAX ratio. summary, our study revealed vitro exposure. Our findings provide insight into associated inducing oxidative stress, activations NRF2-KEAP1-HO-1 pathway, autophagy, apoptosis.

Language: Английский

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Efficient V-Shaped Substrate for Surface and Volume Enhanced Raman Spectroscopic Analysis of Bioaerosol: Prevention from Potential Health Risk

Environment & Health, Journal Year: 2024, Volume and Issue: 2(4), P. 212 - 220

Published: Feb. 13, 2024

Bioaerosols pose a great threat to human life and health, developing highly efficient accurate identification analysis methodologies for bioaerosols provides prerequisite knowledge evaluate their toxicity on health. In this paper, rapid economical method is proposed the detection of based surface-enhanced Raman scattering (SERS). The SERS substrate was prepared using an anodic aluminum oxide (AAO) template with inverted conical (V-shaped) nanopore array structure that subsequently deposited Ag nanoparticles (AgNPs) through magnetron sputtering. This tailored nanostructure essentially enables differentiated Escherichia coli Staphylococcus epidermidis health risks within 10 min, along corresponding limits 103 cells/mL 104 cells/mL, respectively. Notably, by comparing spectrum two bacteria obtained from plain plane same AgNPs, V-shaped more robust enhancement effect in signal relative ordinary plane. More importantly, applicability developed AgNPs@V-shaped AAO validated ambient bioaerosols, thus emphasizing potential application SERS-based technique cost-effective, label-free culture-free bioaerosol without experiencing conventional time-consuming laborious incubation processes.

Language: Английский

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