Soot formation in laminar flames of ethylene/ammonia

Combustion and Flame, Год журнала: 2020, Номер 220, С. 210 - 218

Опубликована: Июль 12, 2020

Язык: Английский

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A look beyond the priority: A systematic review of the genotoxic, mutagenic, and carcinogenic endpoints of non-priority PAHs

Environmental Pollution, Год журнала: 2021, Номер 278, С. 116838 - 116838

Опубликована: Март 1, 2021

Язык: Английский

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Pyrolysis-catalytic upgrading of bio-oil and pyrolysis-catalytic steam reforming of biogas: a review

Environmental Chemistry Letters, Год журнала: 2021, Номер 19(4), С. 2825 - 2872

Опубликована: Март 1, 2021

Язык: Английский

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Characterization and Risk Assessment of Atmospheric PM_2.5 and PM₁₀ Particulate-Bound PAHs and NPAHs in Rwanda, Central-East Africa

Environmental Science & Technology, Год журнала: 2018, Номер 52(21), С. 12179 - 12187

Опубликована: Окт. 16, 2018

Exposure to airborne particulates is estimated as the largest cause of premature human mortality worldwide and particular concern in sub-Saharan Africa where emissions are high data lacking. Particulate matter (PM) contains several toxic organic species including polycyclic aromatic hydrocarbons (PAHs) nitrated PAHs (NPAHs). This study provides first characterization source identification for PM10- PM2.5-bound NPAHs during a three-month period that spanned dry wet seasons at three locations Rwanda. The 24-h mean PM2.5 PM10 concentrations were significantly higher than season. PAH NPAH urban roadside site background rural site. Source using diagnostic ratio analysis principal component (PCA) revealed diesel gasoline-powered vehicles location wood burning major sources NPAHs. Our demonstrates PM lifetime cancer risks resulting from inhalation exposure PM-bound exceed World Health Organization safe limits. clear evidence an immediate development emission control measures required.

Язык: Английский

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Solid-phase microextraction technique for sampling and preconcentration of polycyclic aromatic hydrocarbons: A review

Microchemical Journal, Год журнала: 2020, Номер 157, С. 104967 - 104967

Опубликована: Май 3, 2020

Язык: Английский

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Polycyclic Aromatic Hydrocarbons (PAHs) and their Derivatives (O-PAHs, N-PAHs, OH-PAHs): Determination in Suspended Particulate Matter (SPM) – a Review

Environmental Processes, Год журнала: 2021, Номер 9(1)

Опубликована: Дек. 29, 2021

Abstract The aim of this paper is the presentation current state-of-the-art about determination polycyclic aromatic hydrocarbons (PAHs) and their oxidized forms originating from Suspended Particulate Matter (SPM) samples. influence SPM on health twofold. SPM, as composed small particles, dangerous for respiratory system. Additionally, a carrier many hazardous compounds, particularly PAHs. Recently, several researches focus derivatives PAHs, nitro-, oxy- hydroxy-PAHs, which are more than parent Both gas high-performance liquid chromatography with various detection techniques used to analyze both PAHs forms. Due appearance these compounds in environment, at very low level, an analyte concentration step has be applied prior analysis. If GC HPLC chiefly analytical tools analyses, spectrum procedures broad. Many proposed: classic liquid-solid extractions, including Soxhlet technique, pressurized extraction (ASE) or microwave oven (MWE) sonic supported SPE applications. However, one should remember that PAH methods solving main problem, i.e., evaluation hazard connected presence air. Thus, drawback papers found review, lack information concerning limit (LOD) makes applicability limited.

Язык: Английский

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Oxidative potential associated with water-soluble components of PM2.5 in Beijing: The important role of anthropogenic organic aerosols

Journal of Hazardous Materials, Год журнала: 2022, Номер 433, С. 128839 - 128839

Опубликована: Апрель 4, 2022

Язык: Английский

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Investigation of PAHs, nitrated PAHs and oxygenated PAHs in PM10 urban aerosols. A comprehensive data analysis

Chemosphere, Год журнала: 2022, Номер 294, С. 133745 - 133745

Опубликована: Янв. 25, 2022

Polycyclic aromatic compounds (PACs) in particulate matter contribute considerably to the health risk of air pollution. As such, we have optimized a method determine levels polycyclic hydrocarbons, especially nitrated and oxygenated samples PM10 using microwave-assisted extraction (MAE) gas chromatography coupled triple quadrupole mass spectrometer (GC-MS/MS). The proposed was applied analysis real collected urban area Ciudad Real (Spain) during one year. median total concentrations eighteen PAHs (∑PAHs) seven OPAHs (∑OPAHs) were 0.54 0.23 ng m-3, respectively, with corresponding value for NPAH (∑NPAHs) being 0.03 m-3 (only detected 40% samples). A clear seasonal trend observed, higher cold season lower warm ∑PAHs. same effect observed ∑OPAHs, which exhibited concentration 0.72 0.10 season, ∑NPAH, 0.04 but not season. Molecular diagnostic ratios PCA (principal component analysis) showed predominantly traffic origin PACs. sources also depend on meteorological conditions and/or atmospheric reactions, as confirmed by means statistical analysis. ∑OPAH/∑PAH ∑NPAH/∑PAH than thus suggesting that PAH derivatives originated from primary combustion emission together their parent PAHs. range found benzo(a)pyrene 0.006-0.542 is below threshold 1 established European legislation annual average value. lifetime lung inhalation PM10-bound PACs estimated be six cancer cases per million people World Health Organization method.

Язык: Английский

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Integrated ultrasound‐assisted magnetic solid‐phase extraction for efficient determination and pre‐concentration of polycyclic aromatic hydrocarbons from high‐consumption soft drinks and non‐alcoholic beers in Iran

Journal of Separation Science, Год журнала: 2022, Номер 45(16), С. 3139 - 3149

Опубликована: Июль 5, 2022

In the present research, an ultrasound‐assisted magnetic solid‐phase extraction coupled with a gas chromatography‐mass spectrometry hybrid system was developed for extraction/determination of trace amounts polycyclic aromatic hydrocarbons in high‐consumption soft drinks and non‐alcoholic beers Iran using magnetite graphene oxide adsorbent. The characterized by scanning electron microscope, transmission microscopy, Fourier‐transform infrared spectroscopy, X‐ray diffraction, vibrating‐sample magnetometer techniques. highest recovery (73.05%–95.56%) enrichment factor (90.65–106.38) were obtained at adsorbent mass: 10 mg, adsorption time: 30 min, salt addition: sodium chloride 10% w/v, desorption 20 eluent type: hexane: acetone (1:1, v/v), solvent volumes: 200 μl. Under optimum conditions, linearity range determination 0.2–200 ng/ml coefficient > 0.993, limit detection = 0.09–0.21 ng/ml, quantitation 0.3–0.7 relative standard deviation < 8.1%, respectively. Relative recoveries spiked real samples ranged from 94.67 to 109.45% 6.05%. proposed method is effective, sensitive, reusable it promising analysis residues environmental samples.

Язык: Английский

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PAHs and nitro-PAHs in urban Beijing from 2017 to 2018: Characteristics, sources, transformation mechanism and risk assessment

Journal of Hazardous Materials, Год журнала: 2022, Номер 436, С. 129143 - 129143

Опубликована: Май 13, 2022

Язык: Английский

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