On site analysis can identify the type of petroleum hydrocarbon present, such as gasoline, diesel, or degraded fuel. It can also indicate if concentrations are above or below thresholds and identify clean versus contaminated areas. The analysis provides results within 10 minutes. However, for accurate quantification the calibration must match the hydrocarbon type in the sample. On site methods assume a type and provide conversion tables, while some laboratory methods can identify the type. Quality control measures include instrument checks, calibration verification, and periodic laboratory analysis for method verification.
26th John L Waters Symposium - Hyphenated Techniques in Thermal AnalysisKevin Menard, Ph.D. MBA
Hyphenated thermal analysis system allow a greater understanding of materials and processes. This talk from the John L Waters Symposium at PittCon 2015 discusses the history and current state of the techniques
26th John L Waters Symposium - Hyphenated Techniques in Thermal AnalysisKevin Menard, Ph.D. MBA
Hyphenated thermal analysis system allow a greater understanding of materials and processes. This talk from the John L Waters Symposium at PittCon 2015 discusses the history and current state of the techniques
In gas chromatography, the sample is first converted to the vapor state or volatile compound is
used which are injected into heated port along with a carrier gas. Analyte in the vapor state
distributes between the stationary phase and the carrier gas. As the analyte elute from column
signal is displayed in the form of chromatogram. Measurements of GC are rapid and convenient.
Retention times are used for qualitative identification. Peak areas are used for quantitative
measurements.
Haloacetic acids (HAAs) are known carcinogens that may occur as disinfection byproducts in drinking water. Traditionally these compounds were analyzed using helium (He) carrier gas, the cost of which has increased tremendously over the years. In this application, we explored using alternative hydrogen (H2) carrier gas to determine HAA concentrations according to EPA method 552.3.
A complete presentation on gas chromatography, illustrating the basics, operation and different instrumentation components of the whole system.
Kindly comment if this presentation helps you or if you like this.
Plenary talk at ISPAC conference on the use of polycyclic aromatic hydrocarbons (PAHs) in environmental forensics. Covers basics of what enviromental forensics investigations (EFIs) are and how PAHs can be used to help determine sources of releases (creosote, railway ties), oil sands development and oil spill releases (Macondo oil spill, gulf oil spill).
This presentation reports on the development of a GC FID method to accurately quantify ethanol and IPA concentrations in two hand sanitizer samples. By using nitrogen as the carrier gas, this method is cost-effective and ensures the product compliance with CDC and USP guidelines and regulations.
In this webinar Dr. Bertrand Rochat of Faculté de Biologie et de Médecine of the Centre Hospitalier Universitraire Vaudois (CHUV) at Lausanne discusses the paradigm shift to high resolution mass spectrometry (HRMS) in clinical research for quantitative analyses (sensitivity, selectivity, etc.). Quantifications in high resolution full scan or MS/MS mode will be compared with triple quadrupole MS. He will present Quan/Qual analysis with a study on the fate of an anti-cancer agent in human: with over 40 metabolites being identified and quantified; as well as metabolomics data underscoring the versatility of high resolution Orbitrap MS.
Presentation from 2007 to AWMA conference on vapour intrusion. Presentation covers the environmental forensics investigation of gases to identify the sources of the potential vapour intrusion. Techniques used both standard gas analysis as well as isotopic analysis of selected gases to identify the likely sources.
A single chromatographic method was developed for the separation and quantitation of ten common seized drugs. The single quadrupole mass spectrometer, LCMS 2020, demonstrated its capability for simultaneous detection and confirmation using in source fragmentation of all analytes. Linear calibration curves were acquired for each analyte.
In gas chromatography, the sample is first converted to the vapor state or volatile compound is
used which are injected into heated port along with a carrier gas. Analyte in the vapor state
distributes between the stationary phase and the carrier gas. As the analyte elute from column
signal is displayed in the form of chromatogram. Measurements of GC are rapid and convenient.
Retention times are used for qualitative identification. Peak areas are used for quantitative
measurements.
Haloacetic acids (HAAs) are known carcinogens that may occur as disinfection byproducts in drinking water. Traditionally these compounds were analyzed using helium (He) carrier gas, the cost of which has increased tremendously over the years. In this application, we explored using alternative hydrogen (H2) carrier gas to determine HAA concentrations according to EPA method 552.3.
A complete presentation on gas chromatography, illustrating the basics, operation and different instrumentation components of the whole system.
Kindly comment if this presentation helps you or if you like this.
Plenary talk at ISPAC conference on the use of polycyclic aromatic hydrocarbons (PAHs) in environmental forensics. Covers basics of what enviromental forensics investigations (EFIs) are and how PAHs can be used to help determine sources of releases (creosote, railway ties), oil sands development and oil spill releases (Macondo oil spill, gulf oil spill).
This presentation reports on the development of a GC FID method to accurately quantify ethanol and IPA concentrations in two hand sanitizer samples. By using nitrogen as the carrier gas, this method is cost-effective and ensures the product compliance with CDC and USP guidelines and regulations.
In this webinar Dr. Bertrand Rochat of Faculté de Biologie et de Médecine of the Centre Hospitalier Universitraire Vaudois (CHUV) at Lausanne discusses the paradigm shift to high resolution mass spectrometry (HRMS) in clinical research for quantitative analyses (sensitivity, selectivity, etc.). Quantifications in high resolution full scan or MS/MS mode will be compared with triple quadrupole MS. He will present Quan/Qual analysis with a study on the fate of an anti-cancer agent in human: with over 40 metabolites being identified and quantified; as well as metabolomics data underscoring the versatility of high resolution Orbitrap MS.
Presentation from 2007 to AWMA conference on vapour intrusion. Presentation covers the environmental forensics investigation of gases to identify the sources of the potential vapour intrusion. Techniques used both standard gas analysis as well as isotopic analysis of selected gases to identify the likely sources.
A single chromatographic method was developed for the separation and quantitation of ten common seized drugs. The single quadrupole mass spectrometer, LCMS 2020, demonstrated its capability for simultaneous detection and confirmation using in source fragmentation of all analytes. Linear calibration curves were acquired for each analyte.
Organization of American Political PartiesMatthew Caggia
Demonstrating a wide range of concepts, this slideshow describes the structure of political parties from the national organization down to the grassroots, as well as explaining the primary process
This paper was a local AIHA presentation on criteria for exposure assessment of gasoline components. Which components are most likely to be of concern based on OELs and % volume content.
Regardless of the source, assessing a crude oil or a fuel for unwanted or intentionally added elemental constituents is a critical part of a quality control protocol. This poster showcases the effectiveness of the ICPE-9820 for the analysis of three petrochemical samples according to ASTM D7111.
In this study, analysis of DRO and ORO (C10-C40) were performed using a Shimadzu GC-FID equipped with fast temperature programmable (FTP) column that aim to significantly reduce the run time for this analysis.
Analysis for and quantification of sulfur in crude oil, natural gas, petrochemicals, and industrial chemicals is critical to ensuring quality, process control, and safety for refinery, processors, and users. Understanding the speciation and concentration of sulfur compounds is vital in the hydrocarbon processing industry. Gas chromatography with sulfur chemiluminescence detection (GC-SCD) is one of the most powerful tools for sulfur analysis of hydrocarbons. This poster showcases the use of a new SCD for analysis according to various ASTM methods.
(www.chemixcalibrationgases.com) We are a reputed organization engaged in manufacturing, supplying and exporting a magnificent range of Gas Mixtures & Handling Equipment. The entire range of products are manufactured using high quality raw material by employing latest technology and machinery. Moreover, we offer these products to the clients at industry leading prices. These products are widely used in several industries and sectors.
Emission Measurements of Various Biofuels using a Commercial Swirl-Type Air-A...JOACHIM AGOU
A joint university-industry research program funded by Rolls-Royce Canada, NSERC and CRIAQ is actually pursued at Université Laval to characterize the combustion performance of liquid (biodiesel blends) and gaseous (syngas blends) biofuels in terms of emissions & smoke and lean blow out. The final objective of the proposed research is to characterize the most promising liquid and gaseous novel biofuels for use in industrial gas turbines in order to reduce greenhouse gases and potentially operation costs. These combustion tests allowed the characterization of standard diesel fuel as a baseline plus two biodiesel blends as well as standard methane as a baseline plus ten syngas blends (CH4, H2, CO and CO2) in order to evaluate the emissions of the main pollutants (CO, CO2, NOx, UHCs and smoke). Combustor exit and wall temperature measurements were also taken to characterize adequately the boundary conditions for future CFD simulations. The flame was contained in a quartz tube combustor operating at ambient outlet conditions and the fuel was delivered through a commercial swirl-type, airblast dual fuel atomizer. The air mass flow rate was kept constant for all fuels to maintain the same pressure drop (ΔP) across the fuel injector while the fuel flow was varied to cover equivalence ratios from 0.5 to 1. A probe connected to a FTIR/FID/O2 gas analyzer system and a smoke filter was fixed to a 3D-axis traverse in order to sample combustion products in a cross pattern at the combustor exit. This way, concentrations of various emissions were obtained at five radial positions. Burned gases and wall temperatures were measured with thermocouples along the test rig. This paper reports the findings of these experimental tests and presents the comparisons of the biofuels with baseline fuels to identify some benefits of these novel biofuels while maintaining an acceptable overall combustion performance.
USE OF VPH/EPH/APH DATA TO
CHARACTERIZE RISKS TO HUMAN HEALTH & THE ENVIRONMENT FROM PETROLEUM EXPOSURES
1st International Congress on Petroleum Contaminated Soils, Sediments, and Water
Analysis, Assessment and Remediation
Imperial College, London, U.K.
Workshop No. 05
14 August 2001
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