Study on Natural Attenuation of Groundwater Organic Pollutants by Integrating Microbial Community Dynamics and Isotope Analysis

Water, Год журнала: 2025, Номер 17(4), С. 555 - 555

Опубликована: Фев. 14, 2025

This study focuses on a typical chemically contaminated site in the southeastern coastal region of China, investigating natural attenuation mechanisms benzene and o-toluidine groundwater through high-throughput sequencing, physicochemical analyses, stable isotope techniques. The results demonstrate significant heterogeneity spatial distribution degradation processes pollutants within zones (W27, W28, W31). Environmental factors such as HCO3−, SO42−, ORP predominantly influence microbial community structure functional distribution. Stable data reveal that δD δ13C enrichment effects are most pronounced deep layer (W28_40m), indicating active pollutant degradation, while deeper layers W27 W31 is constrained by anaerobic conditions reduced activity. combined analysis hydrogen carbon isotopes elucidates pathways dynamic zones, providing quantitative evidence for scientific support optimizing remediation strategies.

Язык: Английский

---

Assessment of BTEX, PM10, and PM2.5 Concentrations in Nakhon Pathom, Thailand, and the Health Risks for Security Guards and Copy Shop Employees

Atmosphere, Год журнала: 2025, Номер 16(2), С. 212 - 212

Опубликована: Фев. 13, 2025

Concentrations of PM10, PM2.5, and the BTEX chemical group were studied in Nakhon Pathom, Thailand. The occupational health risk for workers (security guards printing machine operators) was estimated against exposure to these pollutants. average levels (benzene, toluene, ethylbenzene, xylenes) 67.32, 40.21, 80.93 µg/m3, respectively. Among group, toluene most prevalent at all sampling sites, with mean 55.71 µg/m3. measured toluene/benzene ratios (T/B) indicated that potential sources EG, CP1, CP2 sites influenced by vehicular or traffic sources. level benzene utilized evaluating cancer, whereas PM2.5 non-cancer risk. According assessment (at 95% CI), security tended have higher cancer values due (4.04 × 10−5) when compared operators (2.41 their frequent particular high concentration. Meanwhile, an acceptable copy center employees. In order lower overall workers, effective method is reduce

Язык: Английский

---

Safe or unsafe: role of exposure time and interactions between volatile organic compounds in mixtures

Building and Environment, Год журнала: 2025, Номер unknown, С. 112619 - 112619

Опубликована: Янв. 1, 2025

Язык: Английский

---

Engineering Alkali-Metal-Doped Aluminum Oxyhalides for Tunable Π-Cation Interactions: A Dft Study on Aromatic Pollutant Adsorption and Electronic Modulation

Опубликована: Янв. 1, 2025

Язык: Английский

---

BTEX exposure and metabolite levels in Taiwan schoolchildren near petrochemical areas

International Journal of Hygiene and Environmental Health, Год журнала: 2025, Номер 266, С. 114545 - 114545

Опубликована: Март 2, 2025

Язык: Английский

---

Application of Zeolite-Based Materials for Chemical Sensing of VOCs

Sensors, Год журнала: 2025, Номер 25(5), С. 1634 - 1634

Опубликована: Март 6, 2025

Considerable levels of pollution produced by urbanization and industrial development have established a need for monitoring the presence harmful compounds assessment environmental risks to provide basis timely reaction prevention disastrous consequences. Chemical sensors offer reasonable solution; however, desired properties, such as high sensitivity, selectivity, stability reliability, ease fabrication, cost-effectiveness, are not always easily met. To this end, incorporation zeolites in sensor materials has attracted considerable attention. Such hybrid exhibit excellent performances due unique properties zeolites, which been successfully utilized gas-sensing applications. In review, we discuss recent findings area application materials, focusing on detection volatile organic highlighting role zeolite frameworks proposed mechanisms sensing process. Finally, consider possible future directions zeolite-based technology, including hierarchical nanosized 2D material-zeolite heterostructures that would fulfill demands.

Язык: Английский

---

Optimizing solvent extraction methods for activated carbon-based passive samplers in atmospheric volatile organic compound analysis: minimizing analytical interferences from pretreatment solvents and ensuring quantitative reliability

Analytical and Bioanalytical Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Язык: Английский

---

Mimosa pudica (Makahiya) with cucumber melon-infused fragrance: a natural air freshener gel and mosquito repellent

Deleted Journal, Год журнала: 2025, Номер 51, С. 120 - 134

Опубликована: Март 21, 2025

Insect repellents commonly contain most ingredients such as: DEET, Picaridin, IR3535, and Oil of Lemon Eucalyptus, thus becoming a common product for manufacturers to manufacture. enable people feel comfortable guarded as they have purpose repelling insects especially mosquitoes when spending time outdoors or posed on an area with high populations mosquitoes. Without insect repellents, would suffer problems, hence, the researchers utilized eco-friendly accessible primary ingredient mosquito air freshening, which is Mimosa pudica. With sulfuric odor compound present in plant it can repel To counteract odor, cucumber melon fragrance was infused, providing refreshing aroma that enhances its usability freshener while maintaining repellent efficacy. The this research establish effectiveness pudica extract purification well ability giving aromatic character through fresh fragrance. Phytochemical analysis done find active compounds responsible activity. This product, based standard gel-formulation technique natural infusion, used assess odor-neutralizing activity mosquito-repellent ability. Results phytochemical revealed bioactive compounds, including alkaloids, flavonoids, tannins, efficacy plant. Fragrance were also tested consumer acceptance. study proves possibility may become next best thing ecological, inexpensive substitutes everyday household products: useful, aesthetic value, but only using fewer chemical by-products.

Язык: Английский

---

High photodegradation of toxic volatile organic compounds by biochar derived Cu doped BiHCC nanocomposites

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(3), С. 116680 - 116680

Опубликована: Апрель 16, 2025

Язык: Английский

---

Casuarina seed-packed biofilter for the treatment of gaseous mixture: performance, optimization, synergistic effects, neural model analysis, and kinetics

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116689 - 116689

Опубликована: Апрель 1, 2025

Язык: Английский

---