Real-time detection of PAH mixtures in the vapor phase at high temperatures

Allain, Leonardo R.; Stratis, Dimitra N.; Cullum, Brian M.; Mobley, Joel; Hajaligol, Mohammad R.; Vo‐Dinh, Tuan

doi:10.1016/s0165-2370(02)00110-9

Cited by 13 publications

(4 citation statements)

References 11 publications

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“…Firstly, the LIF spectra of PAHs highly depend on temperature. Although the spectroscopy of PAHs has been widely studied in solutions at room temperature [27][28][29], as well as in an optical cell at higher temperatures [30][31][32], the temperature effects on LIF signals of different PAHs are not well understood, and the spectrum data of PAHs at elevated temperatures are scarce. Secondly, PAHs formed in flames are multicomponent species with different and complex molecular structures, including different aromatic rings, five-membered ring structures, and aliphatic branched chains [33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

“…Allain et al [32] and R. Sun et al [37] had measured the LIF spectra of several PAH vapors and their mixtures at 300 ℃, and they both found that the spectra of mixtures can be calculated by linearly summing the spectra of each component. According to above discussion, the fundamental fluorescence characteristics and spectrum data of PAHs are essential to analyze the LIF spectra measured in flames, in order to obtain reliable quantitative data for the selected PAHs.…”

Section: Introductionmentioning

confidence: 99%

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LIF diagnostics for selective and quantitative measurement of PAHs in laminar premixed flames

Zhang

Xiao

et al. 2020

Combustion and Flame

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

LIF diagnostics for selective and quantitative measurement of PAHs in laminar premixed flames

Zhang

Xiao

et al. 2020

Combustion and Flame

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“…Therefore, fluorescence is used as a detection tool for PAHs in high-performance liquid chromatography and in laser-induced fluorescence (LIF) of vapor-phase PAHs at high temperatures. 37,38 LIF allows quantitative analysis of PAHs absorbed on quartz multichannel polydimethylsiloxane traps. 39 LIF coupled with fiber optics has also been employed in the determination of PAHs in cigarette smoke 29 and naphthalene has been determined in air.…”

Section: Introductionmentioning

confidence: 99%

Solid-Phase Analysis of Polycyclic Aromatic Hydrocarbons by Fluorimetric Methods

et al. 2011

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Polycyclic aromatic hydrocarbons (PAHs) adsorbed on the surface of particulates collected in a working environment have been analyzed using fluorescence techniques. In particular, fluorescence measurements were carried out directly on the sampling filters, in solid phase, and for comparison, on the extract samples in solution. Fluorescence synchronous acquisitions allowed the detection of signals from different PAH compounds and, on the basis of the 0-0 transition energy, the assignment of the emission signals to chemical structures. In particular, the contribution of benzo-a-pyrene was easily detected and used to evaluate the sensitivity of the measurements, which is a few nanograms per milliliter, comparable with other analytical tools. The results of the fluorimetric investigation were validated through the comparison with the data obtained by gas chromatography (GC) analysis on the extracted samples, which allowed identification of the PAHs and the quantification of their distribution on the filters with different cut sizes. The agreement between the two series of data led to the conclusion that fluorimetric analysis directly on the sampling filter could be a new and cost-effective approach for the analysis of PAHs.

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“…Quantitative analysis of vapour phase PAHs at elevated temperatures by laser induced fluorescence (LIF) utilizing an excitation wavelength of 337.1 nm has been reported (Allain et al, 2003;Chi et al, 2001). Similarly, pyrene in cigarette smoke has been determined by LIF based on fiber optics with time resolution to enhance sensitivity (Song et al, 2003), although distortion of the fluorescence spectra in the fibres may occur (Kotzick and Niessner, 1996).…”

Section: Introductionmentioning

confidence: 99%

Investigations into a novel method for atmospheric polycyclic aromatic hydrocarbon monitoring

Forbes

Rohwer

2009

Environmental Pollution

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A novel method for rapid analysis of atmospheric PAHs by laser induced fluorescence allows for more detailed trend determinations. a r t i c l e i n f o a b s t r a c tA novel analytical method for atmospheric polycyclic aromatic hydrocarbons (PAHs) was developed based on laser induced fluorescence (LIF) of samples on quartz multi-channel polydimethylsiloxane traps. A tunable dye laser with a frequency doubling crystal provided the excitation radiation, and a double monochromator with a photomultiplier tube detected emitted fluorescence. The method allowed for the rapid (<5 min), cost effective analysis of samples. Those yielding interesting results could be further analysed by direct thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS, with limits of detection of w0.3 ng m À3 ), as photodegradation was minimal (<10% over 5 min irradiation). Small amounts of naphthalene photodegradation products identified by TD-GC-MS after >15 min irradiation, included phenol, benzyl alcohol and phthalic anhydride. Without any signal optimization, a LIF detection limit of w1 mg m À3 was established for naphthalene using a diffusion tube (diffusion rate of 2 ng s À1 ) and 292 nm excitation.

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Real-time detection of PAH mixtures in the vapor phase at high temperatures

Cited by 13 publications

References 11 publications

LIF diagnostics for selective and quantitative measurement of PAHs in laminar premixed flames

LIF diagnostics for selective and quantitative measurement of PAHs in laminar premixed flames

Solid-Phase Analysis of Polycyclic Aromatic Hydrocarbons by Fluorimetric Methods

Investigations into a novel method for atmospheric polycyclic aromatic hydrocarbon monitoring

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