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Analytical Instrumentation


the integrated MPO removes all interfering nitrogen compounds effectively. This is achieved with the assistance of powerful cold plasm ionization. The signal detected afterwards only represents the remaining SO2


. Analysis Results


An advance of analysis the system was calibrated by means of standard solutions based on dibenzothiophene in iso-octane. Since combustion is optimal, matrix-related calibration strategies are redundant.


The seven samples examined (Table 1) are typical representatives of the wide spectra of petro-matrices. In general, three replicates were enough to gain trustable results.


Due to the optimal combustion, all samples could be processed in the same analysis sequence. This allows fast processing of most versatile matrices and in widely varying concentrations.


Table 1: Determination of sulphur contents with compEAct SMPO No.


1 2 3 4


5 6


7 Sample-ID “2” Diesel (with 2-EHN) Sample-ID Gasoline


Diesel (with 2-EHN) Heating oil (HEL) Heating oil (coker)


Diesel (high contents of bio-fuel)


FAME (pure) Naphtha


Table 2: Comparison common Sulphur analyser vs. compEAct SMPO compEAct SMPO 7.27 ppm


The high sensitivity of the HiPerSens detector enables minimal injection volumes and thus fast analysis results. Analysis times of approximately 3 min can be achieved for all analysed sample matrices, independent of their sulphur content.


Figure 2a: TS determination of sample “5”


Thanks to the MPO technology, the sulphur content can be determined free of “interference” and therefore correctly despite the increased nitrogen content of a sample. The results of sample No. 2 summarised in table 2 clearly demonstrate this.


Fast, reliable and matrix-independent


Whether they may be refineries or commercial analysis centers, modern routine laboratories require analysers that can be operated without any specialist knowledge, deliver reliable results in the shortest possible time, and require minimum human interactions at maximum sample throughput.


Figure 2b: TS determination of sample “2”


Common analyser without MPO


11.6 ppm compEAct SMPO cS 435 ppm is the ideal solution for demanding petro-


applications and daily routine in such environments. With its on-the-point optimised vertical combustion and the wide linear operation range, combined with the advantages of the MPO technology, maximum productivity of the lab can be assured while operational effort is reduced to an absolute minimum.


cS


270 ppb 7.27 ppm 458 ppm


2,832 ppm 5.33 ppm 1.59 ppm


47.4 ppb RSD


± 2.06% ± 2.10 % ± 1.20 % ± 1.29 %


± 0.75 % ± 1.96 %


± 13.4 %


9


Author Details Dr. Angela Gröbel, Senior Product Manager Elemental Analysis, Analytik Jena AG • Konrad-Zuse-Str. 1, 07745 Jena, Germany • Web: www.analytik-jena.com


MINISCAN IR Vision Top Performer in Portable Fuel Analysis


AMETEK Grabner Instruments releases a new high-speed, compact, FTIR fuel analyzer for automatic and comprehensive measurement of gasoline, and jet and diesel fuels. Built on Grabner´s new Vision instrument platform, the MINISCAN IR Vision increases analysis speed by a factor of ten when compared to previous models.


The MINISCAN IR Vision builds on Grabner’s more than 20 years of innovation and experience in FTIR fuel analysis. The analyser, which is configured to measure more than 100 different fuel components, gasoline, and jet and diesel fuel parameters, was developed specifically for fuel blending, quality inspection, specification compliance at the point of sale. The analyzer is pre-loaded at the factory with a database of several thousand fuels collected worldwide and measured in accordance with ASTM and EN fuel specifications.


The new fuel analyzer offers cutting-edge performance and enhanced measurement speed. Its high-performance processor allows users to calculate measurement results within seconds using Partial Least Square (PLS) analysis and full spectrum information. Fuel properties calculated from the factory database can be retrained and optimized.


The instrument’s rugged, ten-inch, full-color industrial touchscreen guarantees the highest visibility as well as ease of use, even under difficult operating conditions. It offers user friendly menu navigation on its large-button touchscreen display that helps ensure immediate instrument response. Worldwide remote support and service are available via a secure VPN tunnel.


The MINISCAN IR Vision is unmatched in its class of portable fuel analyzers in terms of quality. The thermoelectric temperature regulation of the instrument´s filling system, measuring cells and integrated density meter allows for highest accuracy in measuring the volume of fuel compounds. A high-quality Germanium-coated, Potassium Bromide (KBr) beam splitter offers better optical transmission than analysers using Zinc-Selenide (ZnSe) -based beam splitters and improved benzene detection. With an optical resolution of


3.8 cm-1, the analyser resolution is superior to other comparable FTIR analysers.


The core feature of the new instrument is its mechanical robustness, making the instrument ideal for the challenges encountered during field or mobile testing. The MINISCAN IR Vision incorporates Grabner´s proven and robust piston-based and bubble-free filling system. The instrument is protected by a new shock- and vibration-tested Vision platform housing. Its double interferometer is mounted with a self- aligning mirror system that allows for automatic correction of intensity shifts after a rough drive over a bumpy road.


Improve Traceability and Profitability in Cold Behaviour Analysis


For More Info, email: email:


For More Info, email: email:


Cold behaviour analysis finds applications in various areas. In diesel fuel analysis the Cold Filter Plugging Point (CFPP) analysis is a key element and is measured according ASTM D6371, while in jet analysis Freezing Point analysis will be at the top of the list (ASTM D7153). In the lubricants and grease industry, Pour and Cloud Point analysis is performed frequently. In the market there is excellent automated equipment available such as the PAC OptiFZP for freezing point analysis who will perform accurate analysis according to the standard method.


Important analysis comes with a great risk, falling back on the standard method is not enough to ensure traceable results. To eliminate deviations of your analyser’s results compared to other equipment, European Lab Services (ELS) provides trustworthy verification of petroleum analysers such as the OptiFPP for CFPP analysis and makes sure each step of the ASTM D6371 or EN 116 is checked thoroughly. This verification is of enormous importance in order to benefit most from an analyser: the result accuracy and traceability is guaranteed, any discussion concerning the results is eliminated and the proactive verification approach will heavily reduce risk of downtime.


The on-site verification program for a CFPP analyser describes the calibration of the temperature sensor on 4 points in an accredited lab and verification of the display temperature, verification of suction time and differential pressure. The offsets are programmed and verified. The system will be evaluated with a standard reference product and a ISO 17025 certificate will be delivered.


European Lab Services (ELS) is the only company worldwide performing on-site ISO 17025 accredited verification for petroleum analysers for cold behaviour testing. For More Info, email:


43708pr@reply-direct.com


email: For More Info, email:


AUGUST / SEPTEMBER • WWW.PETRO-ONLINE.COM 43510pr@reply-direct.com


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