Time-resolved Phosphorescence Spectroscopy at Cryogenic Temperatures for the Environmental Analysis of Polycyclic Aromatic Sulfur Heterocycles in Oil Contaminated Sites PDF Download
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Author: Maha Al-Tameemi
Publisher:
ISBN:
Category :
Languages : en
Pages : 195
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Book Description
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).
Author: Maha Al-Tameemi
Publisher:
ISBN:
Category :
Languages : en
Pages : 195
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Book Description
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).
Author: Gregory D. Gillispie
Publisher:
ISBN:
Category : Fluorescence spectroscopy
Languages : en
Pages : 0
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Book Description
This report summarizes the efforts at North Dakota State University to implement laser induced fluorescence spectroscopy as a means for sensitive detection of fuel and fuel related contamination. The direction of these efforts is upon in situ detection of polycyclic aromatic hydrocarbons in well monitoring or direct push, cone penetrometer testing (CPT). We discuss conventional approaches to fuel related detection and the inherent weaknesses therein. Both laboratory and field studies involving the applications of our laser based, time domain fluorescence instrument are presented. The principles of fluorescence spectroscopy pertinent to our concerns are outlined and discussed. Since light delivery and collection are based on fiber optics, the issues relating to fiber length, composite material, cladding, and wavelength dependence are presented. A review of our experimental methods and their relation to the results is provided, along with a discussion of the relevant concerns with interpretation of system performance. Data processing methods are presented, along with the results of the processing methods used during these studies. A presentation of wavelength time matrices (WTMs) and contour plots data formats is given. Results from field studies are also presented.
Author: R. Rigler
Publisher: Springer Science & Business Media
ISBN: 3642565441
Category : Science
Languages : en
Pages : 375
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Book Description
The topics range from single molecule experiments in quantum optics and solid-state physics to analogous investigations in physical chemistry and biophysics.
Author: Gillian Louise Grace Goring
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Gregory D. Gillispie
Publisher:
ISBN:
Category : Fluorescence spectroscopy
Languages : en
Pages : 113
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Book Description
This report summarizes the efforts at North Dakota State University to implement laser induced fluorescence spectroscopy as a means for sensitive detection of fuel and fuel related contamination. The direction of these efforts is upon in situ detection of polycyclic aromatic hydrocarbons in well monitoring or direct push, cone penetrometer testing (CPT). We discuss conventional approaches to fuel related detection and the inherent weaknesses therein. Both laboratory and field studies involving the applications of our laser based, time domain fluorescence instrument are presented. The principles of fluorescence spectroscopy pertinent to our concerns are outlined and discussed. Since light delivery and collection are based on fiber optics, the issues relating to fiber length, composite material, cladding, and wavelength dependence are presented. A review of our experimental methods and their relation to the results is provided, along with a discussion of the relevant concerns with interpretation of system performance. Data processing methods are presented, along with the results of the processing methods used during these studies. A presentation of wavelength time matrices (WTMs) and contour plots data formats is given. Results from field studies are also presented.
Author: Johannes W. Hofstraat
Publisher: John Wiley & Sons
ISBN: 9780471245087
Category : Science
Languages : en
Pages : 580
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Book Description
Recent technological breakthroughs, most notably in the field of lasers as well as detection and data processing, have made it possible to apply high-resolution molecular spectroscopy to such areas as environmental science, bioanalysis, and chemical physics. This book describes recent advances and applications of high-resolution molecular spectroscopy in low temperature solid matrices.
Author: Mark Anthony Benvenuto
Publisher: de Gruyter
ISBN: 9783110669916
Category : Business & Economics
Languages : en
Pages : 0
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Book Description
The 6th volume of Green Chemical Processing considers sustainable chemistry in the context of innovative and emerging technologies, explaining how they can support the "greening" of industry processes. The American Chemical Society's 12 Principles of Green Chemistry are woven throughout this text as well as the series to which this book belongs.
Author: Bernd Markert
Publisher: Springer
ISBN: 3319143557
Category : Science
Languages : en
Pages : 295
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Book Description
This book is written for researchers and students interested in the function and role of chemical elements in biological or environmental systems. Experts have long known that the Periodic System of Elements (PSE) provides only an inadequate chemical description of elements of biological, environmental or medicinal importance. This book explores the notion of a Biological System of the Elements (BSE) established on accurate and precise multi-element data, including evolutionary aspects, representative sampling procedures, inter-element relationships, the physiological function of elements and uptake mechanisms. The book further explores the concept Stoichiometric Network Analysis (SNA) to analyze the biological roles of chemical species. Also discussed is the idea of ecotoxicological identity cards which give a first-hand description of properties relevant for biological and toxicological features of a certain chemical element and its geo biochemically plausible speciation form. The focus of this book goes beyond both classical bioinorganic chemistry and toxicology.
Author:
Publisher: National Academies
ISBN:
Category : Science
Languages : en
Pages : 436
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Book Description
Author: Nikolaus H. Fischer
Publisher: Springer Science & Business Media
ISBN: 1468490605
Category : Science
Languages : en
Pages : 412
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Book Description
This volume contains reviews which are based on a symposium, given th at the 30 meeting of The Phytochemical Society of North America, held at Laval University in Quebec City, Canada on August 11-15, 1990. During the past two decades, there have been major new developments in methods which can be applied toward the isolation, separation and structure determination of complex natural products. Therefore, the topic of this symposium, "Modem Phytochemical Methods", is a very timely one. The organizers of the symposium recognized that it would not be possible to cover in detail all new advances in phytochemical methodology. It was therefore decided to emphasize general reviews on recent developments of major separation techniques such as high performance liquid chromatography as well as supercritical fluid chromato graphy. In addition, advances in commonly used structure determination methods, mainly NMR and MS, are reviewed. Other topics include methodo logies of micro-sampling for isolation and analysis of trichome constituents as well as recent breakthroughs on biosynthetic studies of monoterpenes using "enriched" basal cells of trichomes. The volume concludes with a review of quantitative structure-activity relationship (QSAR) studies of biologically active natural products. In Chapter I, K. Hostettmann and his colleagues give a general review of recent developments in the separation of natural products with major emphasis on preparative separations of biologically active plant constituents. The authors present a comparison of droplet countercurrent chromatography (OCCC) with the highly rapid and more versatile centrifugal partition chromatography (CPC).
