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Quantitative analysis of microplastics in seawater using pyrolysis and GCMS


Over 300 million tons of plastics are manufactured every year and studies have shown that >10% of these eventually entered and contaminated the ocean. Growing attention on microplastics in sea water with <5 mm diameter size has been increasing with many surveys on measuring these using FTIR and Raman technologies.


Many analytical techniques only provide limited information on polymer type and size and are not capable in offering an accurate weight percentage of the pollutants. A GCMS pyrolysis technique has been developed by CDS to overcome these limitations.


A previous application described the identification of microplastics in the sea water over ppm concentration using a CDS pyrolysis system from Analytix coupled with a GCMS. This application note is a continued study to further quantify the microplastics concentration and describes using polymer marker peaks for calibration and quantification.


Download both application notes now. More information online: ilmt.co/PL/Q6OP


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direct manufacturer support. The UK-based manufacturer has already been supporting global users directly since the product first launched ten years ago and is now extending that same support to UK customers.


AQMesh is designed, developed, manufactured and fully supported from its Stratford-upon-Avon factory and office. The small sensor air quality monitoring system has been proven throughout the globe, including extensively across the UK, in a wide range of real-world environments and conditions. The team at AQMesh have experience supporting numerous air quality networks, including the ground-breaking Breathe London pilot. In addition to demonstrable performance, the product comes with a free 5 year manufacturer’s warranty – and is the first small sensor system to offer one. The warranty underpins years of proven product quality in terms of the hardware itself as well as longevity in the field and long-term baseline stability.


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Short and long-term rental options have always been offered to all AQMesh customers in addition to purchasing pods and these are now available for UK users direct from the manufacturer. Customers can benefit from AQMesh’s highly experienced and fast-responding technical support and customer service teams, as well as remote diagnostics, remote upgrades and onsite support when required.


Users can also access their data services direct from the bespoke AQMeshData.net secure cloud server through either a secure web application offering dynamic data visualisation, API integration or as a completely free-of- charge download option allowing a data file to be emailed at a regular schedule.


Amanda Billingsley, Managing Director for Environmental Instruments Ltd, the company which manufactures AQMesh, comments “We are proud to have been partners with Air Monitors for so many years and to have jointly achieved the huge growth in use of small sensor systems in the UK. We and ACOEM UK agree that now is the moment to make a positive change, formally ending ACOEM UK’s exclusive distribution of AQMesh and offering our products and services direct to the UK market. We are looking forward to having more direct contact with our users and being able to support their applications, learning more and responding to requirements.”


ACOEM UK will still be supplying AQMesh on a non-exclusive basis, providing support and services to existing users. This ensures no interruption to the services of all our customers, who will continue to receive our excellent customer service levels.


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


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AQMesh now supplied and supported direct in the UK AQMesh is now being supplied and supported directly in the UK, as a positive step towards providing fast,


An improved method for the prevention and control of outbreaks of


legionnaires’ disease


IDEXX has welcomed the publication of a study carried out by the Public Health Laboratory of L’Hospitalet in Barcelona, Spain, which compared the IDEXX Legiolert®


test with the standard


method for detection and enumeration of Legionella (ISO 11731).


Comparing the methods in both potable and non-potable water samples according to the rigorous ISO 17994 protocol, the study found that Legiolert detected more positive results than ISO 11731 and was statistically more sensitive for Legionella pneumophila.


THE BEST SMALL SENSOR AIR QUALITY MONITORING SYSTEM NOW SUPPLIED DIRECT IN THE UK


Additionally, Legiolert was compared to ISO 11731 for the detection of all Legionella species, and while ISO 17994 results demonstrate the two methods to be statistically equivalent, Legiolert was found to be more sensitive.


The study found that all Legiolert results were confirmed to be Legionella pneumophila, indicating a specificity of 100% and no false positives. The authors of the study also noted the procedural advantages of Legiolert, and suggest that it is an easier-to-use test that could be performed more frequently than the standard ISO 11731 method.


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Legiolert uses bacterial enzyme detection technology to identify and enumerate Legionella pneumophila, the principal cause of Legionnaires’ disease. This latest study is notable because it shows that despite being specific to Legionella pneumophila, Legiolert even outperforms ISO 11731 when other Legionella species results are included.


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Sold & supported direct in the UK 5-year manufacturer’s warranty Short & long term rentals


Tested in all UK weather conditions


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Free remote upgrades Free data download


Flexible, customisable platform Latest mobile communications


Contact us now for a direct quote for


new pods or support & data services for existing pods


www.aqmesh.com | info@aqmesh.com +44 (0) 1789 777703


These results convinced the study authors to utilise Legiolert instead of the traditional plate method whenever possible in order to minimise the risk of Legionnaires´ disease in their community.


Full details of the study can be found here: ilmt. co/PL/5OYP


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IET NOVEMBER / DECEMBER 2021 WWW.ENVIROTECH-ONLINE.COM


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SOLD & SUPPORTED DIRECT IN THE UK FOR THE FIRST TIME


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