12 PEFTEC 2017 - Show Review
Matt Bower - Qa3
qualitative and quantitative information on feedstocks, natural gas condensates and fractions from high throughput catalyst screening
Supercritical Fluid Chromatography
In recent years Supercritical Fluid Chromatography (SFC) has seen a major revival, especially in the pharmaceutical sector, which has driven new instrumental developments and there is clear evidence that there is still scope for the application of the technique in the petrochemical fi eld. Didier Thiebaut (ESPCI Paris) gave an overview of supercritical fl uids and their unique benefi ts for petroleum separations including simulated distillation and group type separations. The ease of hyphenation of SFC with other techniques such as GC, GCxGC, HPLC and comprehensive SFCxSFC was also described.
Professor John Langley (Southampton University) covered the application of SFC-MS for a number of applications including gasoline, detergents, surfactants, vegetable oils and biodiesel.
Hyphenated Techniques
In addition to the techniques already covered many other hyphenated techniques featured in the presentations. Luca Godina (Agilent) described the analysis of arsine and phosphine in ethylene and propylene with a dedicated GC/MS analyser, Rosa Penalver (SABIC) presented the characterization of fouling material by TGA-IR, Frank David (RIC) on multidimensional GC and Gerd Vanhoenacker (RIC) presented on 2D-LC Solutions for Petrochemical Applications. Pierre Giusti (Total) described a plethora of hyphenated techniques in a presentation titled “Molecular Characterization in the Oil Industry, from Speciation to Metallopetroleomics and Petrointeractomics” where he delivered a masterclass in petroleum characterisation. In addition to applying most of the techniques described above he also employed a range of separation techniques hyphenated with ICP-MS and ICR-MS for metallopetroleomics to explain some properties at the supramolecular level and introduced the concept of molecular interactomics.
Prof Kevin Schug - University of Texas Flow Injection Analysis (FIA)
Flow Injection Analysis had its heyday in the 1980s as a technique to automate wet chemical analysis methods via the controlled dispersion of an injected sample in a fl owing stream. The sample could then be subjected to a range of physical and chemical processes to provide fast accurate automated systems which were generally capable of much higher throughput than the original method. The technique made a surprise comeback at PEFTEC when Lou Chen (Da Vinci Laboratory Solutions) presented a fl ow injection analyser based on modifi ed HPLC instrumentation for “Fast Trace Peroxide Analysis in Hydrocarbon Process Streams” which had signifi cant advantages over conventional methods. It remains to be seen whether this will spawn a revival of interest in the technique for other applications.
Thomas Groger (Helmholz Centre Munich) gave a presentation based around practical applications of GC-VUV and gave an overview of ASTM D8071 (the Standard Test Method for Determination of Hydrocarbon Group Types and Select Hydrocarbon and Oxygenate Compounds in Automotive Spark- Ignition Engine Fuel Using Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-VUV)). He presented comparison results showing good agreement with the more established Reformulyzer technology and including results for oxygenated blends. He then went on to describe the application of the technique for water contamination of oxy-blends, the detection of high boiling impurities and the application of GCxGC VUV for the analysis of diesel and middle distillate samples. It was clear that the scope of the application of VUV will only expand going forward as practitioners explore new application areas.
In other presentations Matt Kirby (Qa3) discussed the functional speciation of non-volatile, soluble, mercury compounds in hydrocarbon liquids and Christian Wold (SABIC) described a “no- fuss ICP-MS approach for petrochemical feedstocks”
Closing comments Poster Presentation at PEFTEC 2017 Vacuum Ultra Violet (VUV) Spectroscopy
VUV spectroscopy was introduced as a new GC detector in 2014 and has had a major impact on the industry as it delivers many of the features of the ideal GC detector.
Professor Kevin Visitors at PEFTEC
Schug (University of Texas at Arlington) was a pioneer of VUV spectroscopy and gave an excellent introduction to the technique and its application. VUV provides universal and selective detection with unique spectra which show class similarities and allows the deconvolution of coeluting analytes and the automated classifi cation and speciation of mixtures. Spectral absorbance follows Beers Law, so the detector has good quantitative performance and, as a non-destructive fl ow through detector, it is complementarity to coupling with mass spectrometry especially as it has the ability to optically differentiate isomers. Professor Schug then described the application of the technique for the analysis of PCB congeners and the characterisation of weathered diesel fuel samples.
The analytical techniques conference is now a key component of the biannual PEFTEC event and provides delegates with insight into the latest trends in analytical technique research and development in the petroleum industry. It provides a perfect complement to the other PEFTEC activities namely the exhibition, vendor seminars and environmental conference to provide a one stop shop for visitors interested in any aspect of Petroleum, Refi ning and Environmental Monitoring technology. The 2017 analytical conference featured developments in key technology areas presented by leaders in their fi eld and was very well received by delegates.
Visitors at a busy exhibition stand at PEFTEC
Author Contact Details Tom Lynch CSci, CChem FRSC, Independent Analytical Consultant, Cricket House, High St, Compton, Newbury, RG20 6NY • Email:
tomlynch.lynch@
btinternet.com
www.PEFTEC.com
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