Download or read book Analysis of Polycyclic Aromatic Hydrocarbons in Tobacco Related Samples Via High Performance Liquid Chromatography and Laser Excited Time Resolved Shpol Skii Spectroscopy written by Ahmed Comas and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human exposure to polycyclic aromatic hydrocarbons (PAHs) due to cigarette smoke is well known. It is also known that PAHs are not inherent components of tobacco. Their presence in cigarette smoke results from the curing process of tobacco leaves used for the fabrication of cigarettes and the incomplete combustion of tobacco during the smoking process. The two chromatographic versions of EPA method 610 are popular approaches for the analysis of PAHs in a wide variety of samples. This method, which is based either on High-Performance Liquid-Chromatography (HPLC) or Gas-Chromatography (GC) has shown the presence of Benzo[a]pyrene (B[a]P) in tobacco samples and cigarette smoke. B[a]P is the most toxic PAH in the U.S Environmental Protection Agency (EPA) priority pollutant list.

Download or read book Novel Developments on the Extraction and Analysis of Polycyclic Aromatic Hydrocarbons in Environmental Samples written by Walter B. Wilson and published by . This book was released on 2014 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additional work related to the development of methodology for the analysis of PAHs has been reported in the following publications: H. Wang, W.B. Wilson and A.D. Campiglia*, Using gold nanoparticles to improve the recovery and the limits of detection for the analysis of monohydroxy-polycyclic aromatic hydrocarbons, J. Chromatogr. A. 2009, 1216, 5793-5799. H. Wang, G. Knobel, W.B. Wilson, K. Calimag-Williams and A.D. Campiglia*, Gold nanoparticles deposited capillaries for in-capillary microextraction capillary zone electrophoresis of monohydroxy-polycyclic aromatic hydrocarbons, Electrophoresis, 2011, 32, 720-727. A.A. Costa, W.B. Wilson, H. Wang, A.D. Campiglia*, J.A. Dias and S.C.L. Dias, Comparison of BEA, USY and ZSM-5 for the quantitative extraction of polycyclic aromatic hydrocarbons from water samples, Micro. Meso. Mater. 2012, 149, 186-192. W.B. Wilson, A.A. Costa, H. Wang, J.A. Dias, S.C.L. Dias and A.D. Campiglia, Analytical evaluation of BEA zeolite for the pre-concentration of polycyclic aromatic hydrocarbons and their subsequent chromatographic analysis in water samples, Anal. Chim. Acta 2012, 733, 103-109. W.B. Wilson, E.C. Heider, A.D. Campiglia, and F. Barbosa, Low-temperature multidimensional luminescence spectroscopy for the analysis of polycyclic aromatic compounds, Current Topics in Anal. Chem. 2012, 9, 1-23. W.B. Wilson, A.A. Costa, H. Wang, J.A. Dias, S.C.L. Dias and A.D. Campiglia*, Pre-concentration of water samples via BEA zeolites for the direct determination of polycyclic aromatic hydrocarbons with laser-excited time-resolved Shpol'skii spectroscopy, Microchem. J. 2013, 110, 246-255.

Download or read book Identification of Polycyclic Aromatic Hydrocarbons in Air Samples from Zarqa City Jordan Using High Resolution Laser Excited Luminescence Spectroscopy Combined with Shpolskii Matrix Technique Jordan Journal of Chemistry 2012 Vol 7 No 3 P written by Yaser A. Yousef and published by . This book was released on 2012 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semi Volatile and Particulate Polycyclic Aromatic Hydrocarbons InEnvironmental Tobacco Smoke written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of phase distributions and emission factors for polycyclic aromatic hydrocarbons (PAH) in environmental tobacco smoke (ETS) require collection and analysis of very small samples. To achieve the necessary selectivity and sensitivity, a method has been devised and tested for extraction and cleanup of gas- and particulate-phase ETS samples. Gas-phase species were trapped by polymeric sorbents, and particles were trapped on filters. The samples were extracted with hot cyclohexane, concentrated and passed through silica solid-phase extraction columns for cleanup. After solvent change, the PAH were determined by high performance liquid chromatography with two programmed fluorescence detectors. PAH concentrations in 15-mg aliquots of National Institute of Standards and Technology Standard Reference Material SRM 1649 (Urban DustIOrganics) agreed well with published values. Relative precision at the 95% confidence level was 8% for SRM 1649 and 20% for replicate samples (5 mg) of ETS particles. Emission factors have been measured for a range of gas- and particulate-phase polycyclic aromatic hydrocarbons in ETS. The emission factors per cigarette were 13.0±0.5 mg particulate matter, 11.2±0.9 pg for gas-phase naphthalene and 74±10 [mu]g for particulate benzo(a)pyrene.

Download or read book Quantitative Determination of Polycyclic Aromatic Hydrocarbons by Laser Excited Shpol skii Spectroscopy written by Harold Valentin Malle and published by . This book was released on 1989 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lettre du gentil homme volontaire sur ce qui s est pass en Piedmont d s le 26 de juillet jusques au 6 jour d Aoust 1628 Sous la conduitte de monsieur le marquis d Uxelles written by and published by . This book was released on 1628 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Analytical and Spectral Data for Polycyclic Aromatic Hydrocarbons Benzo a pyrene and its metabolites written by and published by . This book was released on 1993 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determination of Polycyclic Aromatic Hydrocarbons in Water Samples by Using High Performance Liquid Chromatography written by Ruchaya Boonyatumanond and published by . This book was released on 1999 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Time resolved Phosphorescence Spectroscopy at Cryogenic Temperatures for the Environmental Analysis of Polycyclic Aromatic Sulfur Heterocycles in Oil Contaminated Sites written by Maha Al-Tameemi and published by . This book was released on 2017 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The large volume of crude oil released into the Gulf of Mexico by the Deepwater Horizon (DWH) accident has raised considerable concerns over potential ecosystem impacts. The dispersion of harmful oil components into the ocean waters could pose long term risks to flora and fauna. Due to the complexity of oil contaminated sites, the unambiguous identification and quantitation of environmental pollutants often requires the sequence of high-performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS). A classic example is the analysis of the sixteen polycyclic aromatic hydrocarbons included in the priority pollutants list of the U.S. Environmental Protection Agency (EPA-PAHs).

Download or read book Selective Fluorescence Detection of Polycyclic AromaticHydrocarbons in Environmental Tobacco Smoke and Other AirborneParticles written by and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical method is described for the simultaneous quantitation of polycyclic aromatic hydrocarbons [pAHs] and alkylderivatives [alkyl-PAHs] in 'real world' samples using microbore reversed-phase high performance liquid chromatography in conjunction with two programmable fluorescence detectors. Sensitivity and selectivity were enhanced by analyzing PAHs under their optimum fluorescence wavelengths. The accuracy of the analytical method was evaluated by determination of PAHs in 5 mg of standard reference material SRM 1649. The method was also successfilly employed to analyze major parent PAHs and some alkyl-PAHs from environmental tobacco smoke [ETS] with a sample size of 2 mg using class-selective fluorescence wavelengths. Some alkyl-PAHs were tentatively identified even in the absence of standard compounds. Coeluting pairs were identified and analyzed by careful selection of excitation and emission wavelengths for each compound. Identities of the signals were confirmed by comparing both the retention behavior and the peak-height ratios at two or more different excitation and emission wavelength combinations.

Download or read book High Pressure Liquid Chromatography for the Measurement of Polynuclear Aromatic Hydrocarbons in Water written by R. Kent Sorrell and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Toxicological Profile for Polycyclic Aromatic Hydrocarbons written by and published by . This book was released on 1995 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determination of Polycyclic Aromatic Hydrocarbons by Gas Chromatography mass Spectrometry and Method Development in Supercritical Fluid Chromatography written by Jari Tuominen and published by . This book was released on 1990 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Chromatography of Polycyclic Aromatic Hydrocarbons written by and published by . This book was released on 1993 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Toxicological Profile for Polycyclic Aromatic Hydrocarbons written by and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Polycyclic Aromatic Hydrocarbons in Water by Sep pak Cartridges Coupled with High Performance Liquid Chromatography written by Roger D. Sinram and published by . This book was released on 1980 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multicomponent Detection and Determination of Polycyclic Aromatic Hydrocarbons Using HPLC and a Phase Modulation Spectrofluorometer written by WT. Cobb and published by . This book was released on 1988 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combination of HPLC with phase-modulation spectrofluorometry provides fluorescence spectral and lifetime selectivity for the qualitative and quantitative analysis of Chromatographic peak components. The phase-modulation spectrofluorometer can be used for on-line HPLC detection and for batch analysis of Chromatographic fractions, as discussed in this paper for the analysis of mixtures of polycyclic aromatic hydrocarbons. In the case of on-line detection, fluorescence lifetime heterogeneity of Chromatographic peaks and peak portions is used as an indicator of Chromatographic peak purity. Fluorescence lifetimes and fractional intensity contributions can be determined from the observed phase and modulation lifetimes at an appropriate number of excitation modulation frequencies. Batch analysis of Chromatographic fractions can be performed by phase-resolved fluorescence spectroscopy, and involves the use of multidimensional data formats in which phase-resolved fluorescence intensity is plotted as a function of Chromatographic and fluorimetric experimental parameters. Advantages of the combined HPLC/phase-modulation spectrofluorometer system are discussed.