Air Monitoring 25


New hyper-localised air quality forecast to deliver high-resolution, actionable intelligence for proactive air quality management in cities


Is your hand-held air mercury analyser accurate and reproducible?


Given their small size, industrial hand-held mercury hygiene monitors do not have the space or power required for a robust internal calibration source or other simple and fast accuracy assessment capability. With the introduction of the Tekran JITRbug, accuracy and performance of hand-held air mercury monitors can be accomplished in a simple fi ve-minute test just prior to daily use. Supervisors and industrial hygiene managers are now able to routinely document accuracy and performance, making certain workers are fully protected from toxic levels of mercury in air.


The JITRbug is a simple-to-operate continuous source of a precisely controlled mercury test gas of known concentration, traceable to a NIST standard. The mercury source fl ow and dilution air fl ow are precisely controlled by dual MFC’s, enabling the system to quickly switch between output Hg concentrations of 30 µg/m3


, 50 µg/m3 , and 100 µg/m3 (others optional).


This turn-key system with quick setup time and NIST traceable Hg gas source is easy to operate, with its password protected touch-screen controller The device enables rapid switching between output concentrations and features a dual front panel test ports for Hg test gas and scrubber exhaust. JITRbug is easily adjustable to user-specifi ed STP reporting conditions and includes a separate rotameter to assess hand-held instrument fl ow accuracy. Tekran also offer an optional shipping and carrying case for portability.


More information online: ilmt.co/PL/O2dD For More Info, email:


email: 58406pr@reply-direct.com Analysis of trace level impurities in hydrogen


Vaisala have announced the launch of its state-of-the-art Air Quality Forecast, which provides unmatched hyperlocal insights with down to 15-meter resolution that empower city authorities to protect communities.


This new Vaisala offering combines superior air quality modelling and measurements to forecast air quality at street-level resolution – including urban landscapes, within street canyons, and even around vegetation. The solution leverages advanced modelling techniques using data fusion and other information sources, such as air quality monitoring networks and local reference stations. In addition, when paired with Vaisala’s AQT530 compact air quality sensor, Vaisala Air Quality Forecast delivers even more enhanced accuracy and localization.


Mitigating air pollution, acting on an immediate air quality hazard to citizens, and guiding future infrastructure planning – including traffi c control, community parks, and hospital development – are easier when using reliable air quality intelligence.


“Vaisala’s new Air Quality Forecast subscription service can be up and running in a city in less than a week,” said Marko Torvinen, Head of Forecasting, Weather and Environment, Vaisala. “The combined power of our weather and environmental intelligence, leveraging 20 years of research and pioneering innovation, provides dependable information decision-makers can confi dently act on now and into the future.”


Providing proactive air quality insights designed exclusively for cities, Vaisala Air Quality Forecast promotes environmental stewardship by delivering unsurpassed air pollution visualisation. This is achieved thanks to its advanced dispersion modelling, providing forecasting, and air quality measurements to create a unique view of emissions and their impact on the environment. This system also provides operators with actionable hourly forecasts; location-based predictions allow agencies to alert communities when air quality indices reach critical levels. Vaisala’s Air Quality Forecast also offers reliable, comprehensive, accurate and hyperlocal measurements; precise evaluation empowers decision-makers to take actions to decrease air pollution in communities worldwide.


With its unwavering commitment to the planet, Vaisala delivers air quality solutions that align with the United Nations’ Sustainability Development Goals and the European Union’s standardization agency.


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58994pr@reply-direct.com WWW.ENVIROTECH-ONLINE.COM


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To achieve sustainable development goals relating to climate change and to improve air quality, the reduction of carbon emissions due to transport and mobility is fundamental. Transport is currently responsible for over a quarter of greenhouse gas emissions in developed countries and is the primary source of urban air pollution worldwide.


The deployment of hydrogen as a sustainable fuel has the potential to substantially reduce emissions of greenhouse gases and harmful air pollutants. In 2050, hydrogen may account for 32% of the fuel demand in Europe. The fuel cell system in a hydrogen vehicle requires very high- quality hydrogen because trace levels of impurities can adversely affect fuel cell performance and durability. For example, formaldehyde and formic acid at concentrations higher than 200 nmol/ mol can cause signifi cant fuel cell performance degradation. To ensure the hydrogen quality, a


specifi cation has been developed (ISO 14687), setting upper concentrations of a series of impurities.


To demonstrate the conformity with this standard it is required to validate by measurement that the levels of the impurities are below the required thresholds. Existing analytical methods suitable for measuring ISO 14687 impurities in fuel cell graded hydrogen mainly involve techniques based on gas chromatography. However, a combination of several analytical techniques and methodologies are necessary to perform the full scope of analysis required.


Chromatotec provide a series of analytical solutions facilitating the best mix between high level of performance and cost-effective solution. Chromatotec’s solutions for impurities in hydrogen are compliant with fuel cell energy norm EN17124. They are based on GC-FID and HPLC systems and use different analytical methods for the characterisation of hydrogen impurities: Total Hydrocarbon measurement, CO and CO2


measurement


and formaldehyde and formic acid measurement. Chromatotec provide the following solutions: humidity in pure H2


CO and CO2


and chlorine), sulphur in hydrogen: H2 chromaS 1ppb, N2


, Ar, He and O2 analyser for 0 – 10 ppm range


So cost-effective and fully automatic turnkey solutions for the measurement of trace level impurities in hydrogen can be achieved. A combination of several analytical techniques and methodologies are necessary to perform the full scope of challenges, but it can be done by using industrial automatic gas chromatograph systems.


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


email:


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59214pr@reply-direct.com and DET H2 O range 0-10 ppm, chromaTHC for CH4 and NMTHC range 0-100 ppm,


with chromaCO, formaldehyde 0,2 ppm with airmoHCHO, total halogenated compounds 50 ppb (hydrogen bromide, hydrogen chloride S only by H2


S MEDOR form 1 ppb to ppm range (with specifi c column and heart cut for H2 ), total sulphur by with chromaDID for range 0,1 – 10 ppm or higher, or with chromaTCD for range 5-10 000 ppm and NH3 by FTUV


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