16


The measurements taken by this experiment relied on the development of a tailored instrument which was able to operate effectively in the field, taking data in real time and feeding back analysis. This has allowed researchers to accurately track data in a way which is stable and repeatable.


The future of GC in environmental analysis


Field GC’s continue to play an important specific role in the identification and quantification of common pollutants in the environment, especially when focusing on highly localised areas analysed in field research.


Industrial growth in developing countries and rapidly increasing air pollution levels are primarily responsible for the rising prevalence of the environmental testing application sector in the global GC market. Recent studies in this area have suggested global methane levels are on the rise although a reason is yet to be determined [9,10]. It is clear that GC will play a key role in providing an explanation to this growing global issue as landfill sites and ‘super-farms’ creating further methane output continue to grow in the coming years [10].


References


1. National Atmospheric Emissions Inventory – Overview of Methane Emissions - http://naei.beis.gov.uk/ overview/ghg-overview


2. The greenhouse gas methane (CH4 ): Sources and sinks, the impact of population growth, possible


interventions - https://link.springer.com/article/10.1007/BF02208779 3. Chromatography in Environmental Analysis – AWE Magazine – March 2009 https://www.aweimagazine. com/article/chromatography-in-environmental-analysis-333


4. Environmental Instrumentation Handbook – Gas Chromatography in Environmental Analysis - https://www. hnu.com/papers/GCEA.pdf 5. World Meteorological Organisation – Measurement of Atmospheric Compositions https://www.wmo.int/ pages/prog/www/IMOP/publications/CIMO-Guide/Prelim_2018_ed/8_I_16_en_MR_clean.pdf 6. Improving Characterization of Anthropogenic Methane Emissions in the United States – Chapter 3 - https:// www.nap.edu/read/24987/chapter/5#85


7. Estimating the size of a methane emission point source at different scales: from local to landscape – Cranfield University – June 2017 - https://dspace.lib.cranfield.ac.uk/handle/1826/12529 8. Carbon isotopic signature of coal-derived methane emissions to the atmosphere: from coalification to alteration - https://www.atmos-chem-phys.net/16/13669/2016/acp-16-13669-2016.pdf 9. WHO – How air pollution is destroying our health - https://www.who.int/air-pollution/news-and-events/ how-air-pollution-is-destroying-our-health 10. Very Strong Atmospheric Methane Growth in the 4 Years 2014–2017: Implications for the Paris Agreement - https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018GB006009


Read, Share and Comment on this Article, visit: www.labmate-online.com/article The Ideal Stationary Phase for Biotherapeutic Applications


In biotherapeutics, main compounds and impurities need to be identified and purified using chromatography and the stationary phase material is a key aspect to succeed in producing active ingredients.


Kromasil is a high-performance chromatographic media based on state-of-the-art spherical silica manufactured for optimum symmetry, efficiency and selectivity. Its narrow particle size distribution and large surface coverage lets chromatographers work with a wide variety of samples, from low molecular weight substances to peptides and proteins. Kromasil silica is highly porous which leads to high loadability and better productivity when carrying out purification, improving the overall process economy.


Kromasil materials are produced in Sweden, where specific particle sizes can be sieved from the same production batch, therefore, the stationary phase has the same properties across the particle size range. Accordingly, scientists and engineers can use the same type of material for analysis and characterisation under UHPLC/HPLC conditions as well as in preparative chromatography from discovery to API manufacturing. This advantage that Kromasil offers, saves weeks and even months of manpower time in a project, improving the return on investment by potentially accelerating significantly time to market.


For samples that need to be separated, analysed and purified fast and with confidence, use Kromasil by Nouryon where products are available in slurry-packed columns for lab analysis and small-scale purification plus bulk material for active ingredient manufacturing.


More information online: ilmt.co/PL/p3Wy 49539pr@reply-direct.com


No Frills HPLC Autosampler Delivers What You Truly Need


IF your HPLC routine calling for automation, look no further than the HT1500L: an autosampler specifically designed for HPLC, fully equipped with all the powerful features any HPLC technician would naturally choose.


HT15000L is the new HPLC autosampler from HTA that offers the best balance of quality and affordability and that is perfectly compatible with any HPLC system.


Unlike LC-MS, nanoLC and UHPLC systems, the HPLC requires few, essential features: excellent analytical performance, good sample capacity, and of course, uncompromised reliability, robustness and durability. HTA has showered the HT1500L with all these essential features, while eliminating anything unnecessary to keep costs as a minimum.


No frills but even no compromise. Despite the competitive price, HT1500L has a strong commitment to quality: the materials have been picked up to provide longevity; the up-to-date technologies offer reliability that deserve a modern instrument while the design attests our care in details.


HT1500L holds multiple racks, each of them removable, to allow continuous sample feeding and more convenient operations. The on-board solvent reservoir allows the needle and the whole flowpath cleaning before processing the next sample.


HT1500L comes with HTA Autosampler Manager, HTA complementary software for autosampler programming. After setting the method once, the operator just needs to load samples and presses START: all the samples in the racks will be automatically processed. Seamless integration can also be experienced with the currently used Chromatography Data System.


HT1500L can actually become your workhorse, extremely reliable and straight to the point. 44352pr@reply-direct.com


EPH Fractionation SPE Cartridges now Available in a 2 g Format


Resprep EPH fractionation SPE cartridges from Restek offers method-specific performance for extractable petroleum hydrocarbon (EPH) analysis of soil and water samples. These high-performing SPE cartridges completely separate aliphatic and aromatic compounds into distinct fractions, and they are guaranteed to produce background levels under the strict reporting limits of MA and NJ EPH methods.


Restek’s standard 5 g format cartridges are now joined by 2 g format cartridges made from the same high-quality silica. While the 5 g cartridges are recommended when higher loading capacity is required, the new 2 g cartridges are ideal for automated systems or when time-saving and solvent reduction are desired. As always, a rigorous QC testing and moisture-resistant packaging ensures storage stability and consistent lot-to-lot performance.


More information online: ilmt.co/PL/R4eG 48931pr@reply-direct.com


INTERNATIONAL LABMATE - JULY 2019


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