analyzing hydrocarbons Articles
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System Description for Monitoring Volatile Hydrocarbons
To help build a comprehensive Industrial Hygiene program, Buck Scientific introduces the IH910 vapor monitoring system utilizing our model 910 gas chromatograph and IH300 air sampling train. Designed to analyze hydrocarbons in air, such as degreasing solvents and paint vapors emitted during plant operations, the IH910 penetrates the 1mg/m3 detection barrier erected by other field portable ...
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Confirming Remediation Effectiveness GeoTrax Survey - Case Study
Our GeoTrax Survey technology was used to verify the effectiveness of 10 years and ~$1.4M worth of investigation, pump/treat, surfactant flushing, and oxidizing compound injection. The GeoTrax SurveyTM detected “blobs” of LNAPL (gasoline) remaining between remediation wells as shown above. An EPA managed boring program confirmed the survey results; samples were collected from each ...
By Aestus, LLC
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Aliphatic and polycyclic aromatic hydrocarbons in sediments of Kaohsiung Harbour and adjacent coast, Taiwan
Surficial sediment samples collected from Kaohsiung Harbour and its nearby coast were analyzed for aliphatic hydrocarbons and parent polycyclic aromatic hydrocarbons (PAHs). According to our results, the average total concentrations of n-alkanes (n-C12 to C35) and aromatics (15 PAHs) were 4.33 µg g–1 dry weight (ranged 0.46–22.60) and 0.59 µg g–1 dry weight (ranged 0.09–1.75), respectively. The ...
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Analyze trace polar hydrocarbons more accurately and reliably with new alumina BOND/MAPD plot columns!
Reproducible, predictable responses for reduced calibration frequency. Exceptional capacity which improves resolution and response. Highest temperature stability—application range extended to 250 °C. New Technology Improves Trace Analysis of Polar Hydrocarbons The chromatographic analysis of light hydrocarbons, including unsaturated isomers, is common in the petrochemical ...
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Transition metals cobaltites spinel for depollution of NOₓ emissions using SCR technology
Abstract The catalytic performance of various transition metal (M = Cu, Mn, and Ni) cobaltites prepared by nanocasting method were investigated for the selective catalytic reduction (SCR) of NO under lean burn conditions. KIT-6 was used as a hard template in the nanocasting method for preparation of catalysts. The catalyst samples were characterized by various techniques such as XRD, ...
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Expert insight: test method basics for oxidizer permit requirements
Whenever a new oxidizer is installed to control Volatile Organic Compound (VOC) emissions, the question often comes up: What test method should I use to demonstrate that the device meets permit requirements? Most states allow you the choice of three EPA Test Methods: 18, 25 and 25A. Of these, use of Method 25A is usually the most desirable, for a few reasons. One, Method 25A provides real time ...
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Bridging environmental mixtures and toxic effects
The Biological Response Indicator Devices Gauging Environmental Stressors (BRIDGES) is a bioanalytical tool that combines passive sampling with the embryonic zebrafish developmental toxicity bioassay to provide a quantitative measure of the toxicity of bioavailable complex mixtures. Passive sampling devices (PSDs), which sequester and concentrate bioavailable organic contaminants from the ...
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Solvent-free oil-in-water analysis
Non-ionic surfactants can homogenize oily, produced water samples, creating optically clear microemulsions that are ideal for fluorescence measurements [1]. The use of surfactants to reduce fouling and improve the performance of on-line, fluorescence-based, oil-in-water monitors has been reported previously [2,3]. This paper describes the use of surfactants to prepare discrete water samples ...
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What is Produced Water?
Produced water is a byproduct brought to the surface during oil and gas exploration and production. Sometimes it is called formation water, brine, or saltwater. It is typically brackish and comes from underground formations, either from zones adjacent to the oil and gas, or from the same zone as the hydrocarbons. In some oil and gas operations, the produced water results from injecting clean ...
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How Residual Gas Analysis (RGA) Factors into Leak Detection
Leak detection is an essential aspect of vacuum operations, underlying critical performance indicators like cost, efficiency, and safety. Extraordinary effort has been made to engineer leak-tight systems capable of inducing and maintaining different vacuum regimes without significant loss of pressure due to leaks. Yet no system is perfect. Even the highest-quality chambers, gaskets, pumping ...
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Capillary GC Columns for Analysis of BTEX Hydrocarbons
A number of different stationary phases have been used for analyzing benzene, toluene, ethylbenzene, and xylene hydrocarbons (the BTEX) compounds). Capillary columns based on a nonpolar shape-selective phase, a chiral stationary phase, and a polyalkylene glycol phase, and support coated open tubular columns (SCOT), exhibit differing abilities to resolve these compounds. A Bentone ...
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Comparative analysis of the outflow water quality of two sustainable linear drainage systems
Three different drainage systems were built in a roadside car park located on the outskirts of Oviedo (Spain): two sustainable urban drainage systems (SUDS), a swale and a filter drain; and one conventional drainage system, a concrete ditch, which is representative of the most frequently used roadside drainage system in Spain. The concentrations of pollutants were analyzed in the outflow of all ...
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Study of polycyclic aromatic hydrocarbons in atmospheric particulate matter of an urban area with iron and steel mills
Polycyclic aromatic hydrocarbons (PAHs) were analyzed from ambient air particulate matter <10 µm (PM10) and the total suspended particulate (TSP) phase continuously for a period of six months (May–October 2010) at five sampling sites located in the urban area of Divinópolis (Minas Gerais), southeastern Brazil, near iron and steel mills. The carcinogenic potency of priority PAHs relative to ...
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Did you know: airmoVOC C6C20+?
Chromatotec offers solutions for SVOCs, VOCs and PAHs in ambient air The airmoVOC C6-C20+ auto-GC-FID analyzer is dedicated to the measurement of hydrocarbons from C6 to more than C25 (linear alcanes) in the range of low ppt (ng/m3). Volatile PAHs measured in standard are : naphthalene, 2-methyl-naphtalene, 1-methyl-naphtalene, acenaphthene, acenaphthylene, fluorene, phenanthrene and ...
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An approach for calculating a confidence interval from a single aquatic sample for monitoring hydrophobic organic contaminants
The use of passive sampling devices (PSDs) for monitoring hydrophobic organic contaminants in aquatic environments can entail logistical constraints that often limit a comprehensive statistical sampling plan, thus resulting in a restricted number of samples. The present study demonstrates an approach for using the results of a pilot study designed to estimate sampling variability, which in turn ...
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Oil in Water Monitoring using Handheld UVF-500D Analyzer - Case Study
Decommisioning Offshore Oil Platforms in California Coal Oil Point in Santa Barbara, CA is a popular spot for surfers (above), with Platform Holly looming in the distance. This and a network of other oil platforms were permanently closed down after the 2015 pipeline spill at Refugio State Beach A contractor is using the UVF-500D to test oil in water on-site for plugging and abandonment ...
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Water quality and quantity assessment of pervious pavements performance in experimental car park areas
Pervious pavements have become one of the most used sustainable urban drainage system (SUDS) techniques in car parks. This research paper presents the results of monitoring water quality from several experimental car park areas designed and constructed in Spain with bays made of interlocking concrete block pavement, porous asphalt, polymer-modified porous concrete and reinforced grass with ...
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Water repellency in oil contaminated sandy and clayey soils
Two sites from a humid tropical environment were studied with respect to soil water repellency caused by hydrocarbon contamination. Samples were analyzed for water repellency (molarity ethanol droplet method), total petroleum hydrocarbons, acute toxicity (Microtox) and field capacity. At both sites, water absorption times were logarithmically related to the molarity ethanol drop value (R > ...
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Accurately Measure Hydrocarbon (Oil/Grease) Levels in Produced Water in Under 15 Minutes
Determining total hydrocarbon or oil/grease levels to ensure compliance with regulatory permit requirements for discharging produced water is a worldwide problem facing the oil and gas industry. Ensuring compliance with these regulations and avoiding fines for non-compliant discharges requires more frequent wastewater measurements to determine the total hydrocarbon concentration. The portable ...
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Environmentally friendly cogeneration plant saves time and money with Oil Skimmer
The U.S. Environmental Protection Agency Performance Track Program is a prestigious program that recognizes the accomplishments of manufacturing facilities that lead the way for improving their facilities’ environmental performance (i.e. reduce air emissions and consumption of water). Brooklyn Navy Yard Cogeneration Partners L.P. is an elite member of this program. They have been recognized for ...
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