Unique visitors: 1628
Hexabromocyclododecane (HBCD) and Tetrabromobisphenol A (TBBPA) are mass produced Brominated Flame Retardants (BFRs) that are used in a number of widely available commercial materials such as plastics, rubbers, textiles and electronic components. These chemicals are added specifically to slow down or ...
Author: Malcolm Driffield
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Unique visitors: 1586
Mass spectrometry has been applied to many aspects of the evaluation of food, including the assessment of chemical composition, quality, flavour, authenticity/geographical origin and not least chemical safety.
The presentation will review contributions made by mass spectrometry (including hyphenated ...
Author: Chris Wright
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Unique visitors: 1615
There have been many investigations of atmospheric aerosol composition using numerous different techniques and instrumentation. It is important to identify the composition of aerosols, precursors and their affect on the atmosphere and human health. Atmospheric aerosols contain a highly complex organic ...
Author: Paul Webb
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Unique visitors: 1643
EU council directive 76/464/EC1 lists 132 compounds that have restricted levels in drinking and surface waters. Of these compounds, 109 are amenable to gas chromatographic analysis. Currently published methods2 involve the use of two injections, one using selected ion recording as a screen, followed ...
Author: Jennifer Burgess
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Unique visitors: 1515
Low level analyte determination within complex matrices forms the backbone of work within the majority of environmental testing laboratories. Regulation is now demanding a change to the way the majority of laboratories have worked in the past. Not only are the levels of determination being lowered, but ...
Author: John Upton
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Unique visitors: 1590
Large molecules in environmental samples have been detected initially by size exclusion chromatography (SEC) and their presence subsequently confirmed by MALDI-MS. Although SEC does not measure molecular mass, it can be used to estimate molecular mass ranges of polydisperse samples and fractions. The ...
Author: A.A. Herod
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Unique visitors: 2307
In 2003, Supelco launched in the UK a new sample preparation kit for rapid clean-up of dioxins, namely polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). The so-called “Dioxin Prep System” was composed of a multi-layer silica gel column and of a dual-layer carbon cartridge ...
Author: Nicholas Ordsmith
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Unique visitors: 1655
CSL owns three Applied Biosystems Sciex API2000 mass spectrometers which are all used for LC-MS/MS determinations, mainly pesticide residues. These are nominally identical instruments. During method development, a number of compound and mass-dependent parameters must be optimised to provide the highest ...
Author: Mark D. Sykes
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Unique visitors: 1666
Isocyanates are commonly used in industry in the manufacture of polyurethane products such as foams, paints and plastics. They are highly reactive compounds, known to produce adverse effects in humans after exposure[1+2]. Dermal exposure is of particular concern although the mechanisms of this are poorly ...
Author: Brendan Prideaux
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Unique visitors: 3649
The cracking plant can produce over 800,000 tonnes of product per year via the process of steam cracking. The feedstock comes from the North Sea and is purified at another plant. It is subsequently heated in a mixture with steam to the temperature (~800 °C) where alkanes are cracked to smaller chain ...
Author: Dr. Phillip Turner
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