ANALYTICAL INSTRUMENTATION


Control of sulphur reduction in automotive fuels with compact, but powerful WDXRF


Sulphur in automotive fuels has been a source of toxic air pollutants like sulphur dioxide and sulphates. The international legislation enforces today very low residual sulphur concentrations in fuels, like the actual limit of 30 ppm for diesel in the US. The EU directive 2003/17/EC regulates the maximum allowed level in the European Union to be max. 10 ppm. Future regulations may drive these limits down even further. And more countries will join the sulphur reduction initiative.


Wavelength-dispersive X-ray fluorescence (WDXRF) analysis is actually the method of choice for accurately and precisely analysing low sulphur concentrations in petroleum products. WDXRF instruments are easily integrated into industrial workflows such as in refineries and commercial service laboratories due to its simple sample preparation, reliability, ease-of-use and accurate analytical results. At the same time, they offer compelling analytical performance making WDXRF far superior than other analytical methods. The ASTM Standard Test Method D2622 describes how to measure high, medium, low and ultra-low down to sub-ppm levels of S in different kind of fuels with WDXRF spectrometry using matrix-matched calibration for each material (oil, diesel, gasoline,…).


The S6 Jaguar WDXRF spectrometer is equipped with Bruker’s 400 W HighSense™ X-ray tube. According to Bruker, this makes the S6 Jaguar the most powerful benchtop WDXRF unit on the market! Modern software with built-in audit-tracking


and state-of-the-art hardware enables best-in-class analytical performance. The S6 Jaguar achieves outstanding sensitivity for a wide range of elements (F to U) and the various configuration options allow us to optimise the system for your needs.


When using the S6 Jaguar for gasoline analyses, you get the full power of a WDXRF system that fits in a benchtop unit. Especially when measuring only a few elements, the S6 Jaguar is an excellent fit. In contrast to other methods like AAS (Atomic Absorption Spectroscopy), UV (Ultra-violet) and ICP-OES (Induced Coupled Plasma – Optical Elemental Spectroscopy), a simple one-time calibration makes the S6 Jaguar ready for your application.


The robust S6 Jaguar is an ideal choice for liquid sample analysis, with high quality components ensuring a long lifetime. It incorporates several features to facilitate simple and precise analysis such as dedicated liquid cups for simple and rapid loading of liquid samples and SampleCare™ technology,. Operation is made simple thanks to ergonomic TouchControl™ display for operation without PC peripherals SPECTRA.ELEMENTS intuitive software with “one button” solutions as well as optional protecting critical system components for low maintenance and optional cup-in- cup technology for additional protection.


The calibration of low sulphur in mineral oil according to ASTM D 2622 was performed with seven standard samples prepared by using commercially available standards covering a concentration range from 0 – 100 ppm for the low range. All standards were traceable to the NIST reference sample. Seven grams of the standard or sample were pipetted into a liquid cell prepared with a 3.6 µm Mylar film support. The samples were measured directly after preparation.


Measurements were performed on the S6 JAGUAR for ASTM D 2622 using the germanium crystal combined with the standard collimator. The S Ka signal was detected with the proportional flow counter. The excitation of this line was done with 27 kV and full 400 W power


To test the analytical precision of the S6 JAGUAR one sample in the most important level of 10.2 ppm was measured 25 times one by one. The maximum allowed difference between two consecutive measurements was 0.93 ppm, but the typical difference of the S6 JAGUAR was much better, around 0.1 ppm. The LOD was 0.73 ppm.


The S6 Jaguar has a wide range of capabilities, and this report demonstrates that it is reliable for analysis of sulphur in fuels. The system easily fulfils the requirements for the WDXRF norm ASTM D 2622. The WDXRF spectrometer brings several advantages to your lab, esp. when compared to AAS and ICP-OES, including lower costs of operation and minimal calibration effort.


The S6 Jaguar enables time-efficient and accurate analysis of sulphur in fuels and oils, contaminants, and wear metals in fuels, lubricating and engine oils. When installed at refineries and oil-production plants, it can easily test the quality of incoming materials and optimise the used additives from day one. It ensures that all elements in fuels are analysed at best performance with highest accuracy and precision combined with low cost of ownership.


Sulfimax GX - Total H2


For More Info, email: email:


The MAC (Maximum Allowable Concentration) of H2


over 10ppm will begin to have serious health consequences such as eye defections, loss of sense and smell, and at over 1000ppm fatality would be certain in only minutes or seconds. Aside from the clear health risk, H2


within refineries and will corrode concrete structures and piping at a rate of up to 10mm per year. ECH Elektrochemie Halle have developed a total H2


For More Info, email: email:


S analyser for the determination of H2 S is extremely corrosive and the presence of H2 S can damage stainless steel technical equipment S in all different sample types, ranging from water/wastewater,


sludges, liquid petroleum products such as crude oil, gasoline, diesel fuels and marine fuels according to methods such as IP570 and ASTM 7621 (procedures B), solid products such as bitumen, tar and elemental sulphur, through to gas products such as LPG, NG, LNG and other gas mixtures. By using an electrochemical detector and unique gas extraction technique, the Sulfimax GX can measure H2


S in all samples down to 0.01ppm through to 10,000ppm. A


typical measurement using the Sulfimax GX takes 5 minutes depending on sample composition and any potential mercaptan interference is removed by white oil in a separate extraction chamber. At end of the measurement the H2


S flows into an Activated Carbon filter to remove any H2 For petroleum and solid products, H2


degrees C depending on sample composition. The H2 For more information on our full range of H2


More information online: ilmt.co/PL/9DR5 For More Info, email:


email: For More Info, email: email:


S, meaning the system does not need to be used under a fume hood.


S gas is heated out using an additional headspace module. Each sample is placed into a sealed vial and administered into the headspace oven which is heated up to 180 S gas is extracted from the sample and using a pump/tubing system is transported into the Sulfimax GX system where the detection of H2 S analysers please visit our website or get in contact with us directly at info@echscientific.com


S occurs. 56765pr@reply-direct.com


H2S determination in petroleum and wastewater products • 0.01-10,000ppm detection range


• Can measure liquid, solid & gaseous samples • In-lab, portable and online confi gurations


www.ech.de ANNUAL BUYERS’ GUIDE 2022 55915pr@reply-direct.com S solution for the petroleum industry


from ECH Elektrochemie Halle Measuring for H2


S content is critical. Hydrogen Sulfide (H2 S is as low as 10ppm, but H2


S) is a toxic gas which can cause hugely detrimental effects to a refineries production and safety. S will already breach the odour nuisance threshold at 3-5 ppm. Anything


11


First commercial browser-based NMR processing application introduced


ACD/Labs has announced the launch of a new browser-based application - Spectrus JS. This new cross-platform application will work on Windows, macOS, and Linux operating systems to process NMR data from all major NMR instrument vendors.


Spectrus JS (JavaScript) only requires access to a browser and internet connection to make NMR data processing and interpretation possible from anywhere and at any time. Such an application has been missing from the software portfolio available to researchers in the modern laboratory.


Spectrus JS is a part of the ACD/Spectrus product portfolio. It introduces server-side processing for NMR and expands the cloud capabilities of this platform. Spectrus platform supports all types of analytical techniques and is paired with well-proven knowledge management and targeted workflow applications.


“Scientists need convenient access to processing and analysis capabilities. This need has become even more critical in light of global social distancing measures. This new browser-based client application allows for facile access to these processing and analysis capabilities - even when far away from the Spectrometer,” said Andrew Anderson, Vice President Innovation & Informatics Strategy, ACD/Labs.


“ACD/Labs has a rich history in providing advanced software for NMR data processing. Accurate NMR spectral prediction is the foundation of any advanced NMR data analysis, and our NMR Predictors are universally recognised as the best in the market. Our Structure Elucidator product is second to none in available CASE Expert Systems. With the release of Spectrus JS we are taking these achievements one step further. We are providing the NMR community with the capability to use ACD/Labs’ state-of-the-art processing algorithms in a modern, easy to use interface that is accessible by any device with a browser and Internet access,” commented Dimitris Argyropoulos, NMR Business Manager, ACD/Labs.


More information online: ilmt.co/PL/VqmY For More Info, email:


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