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Determination of polycyclic aromatic hydrocarbons and their nitrated and oxygenated derivatives in coffee brews using an efficient cold fiber-solid phase microextraction and gas chromatography mass spectrometry method
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAUFMG, 2019)
Dispersive liquid–liquid microextraction based on solidification of floating organic drop and fluorescence detection for the determination of nitrated polycyclic aromatic hydrocarbons in aqueous samples
(Elsevier Science, 2017-03)
In this study, a dispersive liquid–liquid microextraction method based on the solidification of a floating organic drop (DLLME-SFO) combined with molecular fluorescence detection was developed for the analysis of nitrated ...
Determination of nitrated and oxygenated polycyclic aromatic hydrocarbons in water samples by a liquid–liquid phase microextraction procedure based on the solidification of a floating organic drop followed by solvent assisted back-extraction and liquid chromatography–tandem mass spectrometry
(Elsevier Science, 2018-06-21)
A methodology was optimized for the determination of nitrated-PAHs (nitro-PAHs) and oxygenated-PAHs (oxy-PAHs) in natural waters. The extraction/preconcentration procedure was performed by liquid–liquid phase microextraction ...
Polycyclic Aromatic Hydrocarbons (PAHs) and nitrated analogs associated to particulate matter emission from a Euro V-SCR engine fuelled with diesel/biodiesel blends
(2018-12-10)
Among the new technologies developed for the heavy-duty fleet, the use of Selective Catalytic Reduction (SCR) aftertreatment system in standard Diesel engines associated with biodiesel/diesel mixtures is an alternative in ...
Phase distribution of polycyclic aromatic hydrocarbons and their oxygenated and nitrated derivatives in the ambient air of a Brazilian urban area
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAUFMG, 2020)
Solvent-based de-emulsification dispersive liquid-liquid microextraction coupled with UPLC-MS/MS for the fast determination of ultratrace levels of nitrated and oxygenated polycyclic aromatic hydrocarbons in environmental samples
(Royal Society of Chemistry, 2018-02)
In this study, a new solvent-based de-emulsification dispersive liquid-liquid microextraction strategy followed by liquid chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry has been developed ...
Volcanic ashes as a source for nitrated and oxygenated polycyclic aromatic hydrocarbon pollution
(Springer Heidelberg, 2020-05)
In this study, a novel, simple, and highly sensitive analytical procedure for the quantitative evaluation of oxygenated and nitrated polycyclic aromatic hydrocarbons in volcanic ash samples based on dispersive solid–liquid ...
UHPLC-(+)APCI-MS/MS determination of oxygenated and nitrated polycyclic aromatic hydrocarbons in airborne particulate matter and tree barks collected in Buenos Aires city
(Elsevier Science, 2014-05)
A study was undertaken to evaluate the content of oxygenated and nitrated polycyclic aromatic hydrocarbons (OPAHs and NPAHs) in airborne particulate matter (PM2.5 and PM10), and tree barks. For PM2.5 and PM10 collection ...
Remoção de hidrocarbonetos policíclicos aromáticos por substratos sólidos estudos com amberlite XAD-2, polietileno, poliuretano, sílica e fibra de quartzo
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2013-09-19)
Polycyclic aromatic hydrocarbons (PAHs) are a class of compounds characterized by having two or more condensed aromatic rings. These substances, as well as their nitrated and oxygenated derivatives, can be found widely ...
In situ growth of metal-organic framework HKUST-1 in an organic polymer as sorbent for nitrated and oxygenated polycyclic aromatic hydrocarbon in environmental water samples prior to quantitation by HPLC-UV
(Springer Wien, 2020-05)
An in situ preparation of metal-organic framework (HKUST-1) on the surface of an organic polymer is reported. The hybrid material was evaluated as sorbent for solid-phase extraction (SPE) of oxygenated and nitrated polycyclic ...