Headspace Articles on Environmental XPRT

Headspace gas analysis video

Why does headspace gas need to be measured? To check the continuity and quality of the gas supply to the packing machine, the efficiency of the flush/vacuum cycle and the integrity of the pack seal. To optimise gas usage and save costs. To meet customer headspace gas quality standards. ...

Oct. 22, 2015

By Systech Instruments Ltd

Setting the standards for headspace sampling by PID

The responsiveness of PIDs to virtually all VOCs has seen them become the accepted tool for initial site entry assessment, ensuring optimal detection of unknown and often toxic or hazardous chemicals found at hazardous waste sites and chemical emergencies. The speed and accuracy of modern PID equipment means that many worker and community safety concerns during initial and ongoing operations can ...

Nov. 4, 2011

By Ion Science

USP <467> Headspace Residual Solvent Assay with a HT3™ Headspace Instrument

The US Pharmacopeia recently released USP<467> as the current monograph for determining residual solvents in pharmaceutical products by static headspace. The USP classified these residual solvents into 3 categories; Class 1, Class 2 and Class 3. This headspace method does not require further validation if the USP parameters are followed. Following USP<467> monograph parameters, this ...

Oct. 12, 2010

By Teledyne Tekmar

Detection of petroleum-contaminated soils using Equilibrium Headspace and Methanol Extraction

Petroleum spills and leaking underground storage tanks comprise a significant portion of remediation projects. Soil removal and disposal determined based on the contaminants and concentrations present. Specific target analytes are associated with this type of contamination. A number of these compounds are classified as volatile organics and are used to assess the severity of the contamination, ...

Oct. 28, 2011

By PerkinElmer, Inc.

Determination of trichloramine in drinking water using headspace gas chromatography/mass spectrometry

Trichloramine (NCl3) is one of the major causes of the chlorine odor in drinking water. In the present study, a method was developed for analysis of NCl3 concentration in water using headspace gas chromatography/mass spectrometry (HS–GC/MS). For quantification of NCl3, m/z of 51 was selected because other major m/z of NCl3 were also observed as fragments of trichloromethane (CHCl3) and the peaks ...

Mar. 1, 2010

By IWA Publishing

Headspace gas and oxygen permeation analysis of food packaging designs - Case Study

Food packaging designs tested using Systech Illinois gas analysis equipment At the Loughry Campus, Systech Illinois' headspace gas analyzer and oxygen permeation analyzer are used in the testing of food packaging. Located in Cookstown, County Tyrone, Northern Ireland, Loughry Campus offers educational and training programmes in all elements of Food Management. Students have ...

Jun. 9, 2017

By Systech Instruments Ltd

Characterization of organic fouling in reverse osmosis membranes by headspace solid phase microextraction and gas chromatography–mass spectrometry

Adsorption of organic substances on reverse osmosis (RO) membrane surfaces may form an organic film on the membrane, known as organic fouling, and cause flow-rate loss. This problem is mostly unavoidable as no pretreatment method exists for perfect removal of possible foulants, including organic compounds resulting from undesirable bioactivity. Understanding the characteristics of fouling layers ...

Jan. 21, 2015

By IWA Publishing

Quantitative Determination of Volatile Organic Compounds in Drinking Water by EPA Method with Headspace Trap GC-MS

Volatile Organic Compounds (VOCs) refer to a group of easily vapourised organic compounds. Under atmospheric pressure, these compounds boil below 250C. Studies have shown that prolonged exposure to the VOCs could increase the risk of various health problems, such as cancer. VOCs are commonly present in gasoline, dry cleaning solvents and degreasing agents. Due to improper storage, disposal or ...

Aug. 6, 2014

By Shimadzu Scientific Instruments Inc

Development of headspace–gas chromatography–flame ionization detection procedure to determine volatile fatty acids in zoo organic waste leachates

In order to determine volatile fatty acids (short chain monocarboxylic acids with 2 to 6 carbon atoms in a molecule) in leachates formed in organic waste piles a procedure based on static headspace (HS) coupled with gas chromatography (GC) have been proposed and optimized. The conditions of HS extraction and sample introduction into a gas chromatograph as well as of chromatographic separation ...

Jan. 1, 2011

By IWA Publishing

Headspace gas chromatography with flame ionization detection (HS-GC-FID) for the determination of dissolved methane in wastewater

There is currently a need for a simple, accurate and reproducible method that quantifies the amount of dissolved methane in wastewater in order to realize the potential methane that can be recovered and account for any emissions. This paper presents such a method, using gas chromatography with flame ionization detection fitted with a GS-Gas PRO column coupled with a headspace auto sampler. A ...

Sep. 17, 2014

By IWA Publishing

Determination of VOCs in water using static headspace GC/MS with simultaneous full scan and selective ion recording

The combination of static headspace sample introduction and gas chromatography/mass spectrometry (HS/GC/MS) provides the analyst with a powerful, fully automated technique for the determination of trace volatile organic compounds (VOCs) in water. Samples may be hermetically sealed in the headspace vial at the point of sampling. This approach avoids errors due to glassware cross-contamination and ...

Oct. 28, 2011

By PerkinElmer, Inc.

The Use of Systech Illinois` Gaspace Headspace Gas Analysers in the Pre-Packed Meat Industry - Case Study

Our Gaspace headspace gas analyzers play a key role in quality assurance for Tulip International’s Modified Atmosphere Packaging of pre-packed meat. Tulip International's cooked meats division is one of the largest producers of pre-packed bacon in the UK. Some of the output is vacuum packed, but the majority is packed in rigid, modified atmosphere packs (MAP) because the ...

Oct. 1, 2010

By Systech Instruments Ltd

Severe wastewater testing program for rapid evaluation of coatings and linings

High-performance protective coatings are often failing in the severe headspace environments of domestic wastewater collection and treatment systems. These failures are attributed to many factors including low permeability properties to resist H2S and other corrosive gases present within this environment. Although the chemical and physical properties of coating systems can be determined in the ...

Jan. 30, 2008

By Tnemec Company, Inc.

Aerating recycled water on mushroom composting sites affects its chemical analysis and the characteristics of odor emissions

Recycled water (RW) containing compost leachate can be a potent source of foul odor on mushroom composting sites. Samples of RW were repeatedly collected from storage tanks and pits of 14 mushroom composting sites in England and Ireland. Relationships between the effects of submerged aeration of the RW, the chemical and microbial characteristics of the RW, and the odors emitted were investigated. ...

Mar. 27, 2008

By Soil Science Society of America (SSSA)

Modified atmosphere packaging of pre-packed meat - Case Study

The Use of Systech Illinois' Gaspace Headspace Gas Analysers in the Pre-Packed Meat Industry Our Gaspace headspace gas analysers play a key role in quality assurance for Tulip International's Modified Atmosphere Packaging of pre-packed meat. Tulip International's cooked meats division is one of the largest producers of pre-packed bacon in the UK. Some of the output is vacuum ...

Jun. 9, 2017

By Systech Instruments Ltd

A sewer ventilation model applying conservation of momentum

The work presented herein was completed in an effort to characterize the forces influencing ventilation in gravity sewers and to develop a mathematical model, based on conservation of momentum, capable of accounting for friction at the headspace/pipe interface, drag at the air/water interface, and buoyancy caused by air density differences between a sewer headspace and ambient. Experiments were ...

Jan. 1, 2011

By IWA Publishing

Determination of Bisphenol A in Drinking Water

A comprehensive sample preparation and analytical procedure was developed for determining BPA in drinking water. This fast procedure employed materials and techniques selected in part for speed, but also those that would not contribute unwanted artifacts. The use of SPE allowed BPA to be extracted plus concentrated, which may result in greater method sensitivity compared to simple headspace or ...

Jun. 6, 2012

By MilliporeSigma

Modified atmosphere packaging of dried fruit and fruit snacks - Case Study

Systech Illinois’ oxygen headspace gas analyzer helps Whitworths maintain the quality of a million packs of dried fruit every week. In the UK, Whitworths produces around a million packs of dried fruit and fruit snacks each week using modified atmosphere packaging (MAP) to ensure long product shelf life. Sample packs are tested every hour using a Systech headspace gas analyzer ...

Oct. 1, 2010

By Systech Instruments Ltd

Identification of Seasonal Variations in Volatile Sulfur Compound Formation and Emission from the Secondary Treatment System at a Large Wastewater Treatment Plant

Offensive odors associated with gaseous emissions from wastewater treatment plants (WWTPs) are a nuisance to residential communities that exist in close proximity to these facilities. Excessively high odor levels may result in local litigation and new regulatory requirements to reduce emissions from these treatment plants. The purpose of this study was to identify, quantify and determine source ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Analysis of pesticide residues in drinking water samples using solid-phase micro-extraction (SPME) coupled to a gas chromatography-electron-capture detector (GC-ECD)

The headspace solid-phase micro-extraction (HS-SPME) method with polydimethylsiloxane (PDMS, 100 μm) fiber is a cost-effective technique for the determination of different pesticide residues in environmental and biological samples followed by a gas chromatography-electron-capture detector (GC-ECD). In the present study more than 147 water samples collected in and around Lucknow city were ...

Dec. 1, 2011

By IWA Publishing

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