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Greater London Authority select new air quality monitoring network in the fight against toxic air


Clarity Movement Co. have announced that its air quality monitoring network air quality monitoring technology was selected to power the next phase of the Breathe London project. The selection comes through a partnership with Imperial College, London a pioneering university with a research arm specialising in air pollution that is responsible for managing the London Air Quality Network (LAQN), one of the densest and most advanced metropolitan monitoring networks in the world.


Deputy Mayor for Environment and Energy, Shirley Rodrigues said, “This is a major milestone for the Mayor’s world-leading Breathe London sensor network. Giving Londoners the opportunity to see the levels of pollution in their local area will improve awareness and help people reduce their exposure. It will also help City Hall, TfL [Transport for London], and the boroughs better target efforts on improving air quality and contributing to a green recovery from the coronavirus pandemic. We hope the success of this scheme and its innovative use of clean technology will act as a blueprint for cities around the world to battle their own toxic air emergencies.”


JCT stands for reliable transfer of sample gas from the stack to the analyzer to ensure trust-worthy results


AIR MONITORING 37


Optical sensor onboard SpaceX rocket to detect


greenhouse gas emissions


Gas Sampling Probes


An optical sensor manufactured by ABB was deployed with the successful launch of satellite Hugo from GHGSat, the emerging leader in greenhouse gas sensing services in space.


Portable


Gas Conditioning Systems


The ABB supplied optical sensor can map methane emissions from space at a resolution that is 100 times higher than any other sensors. Whilst previously only larger regions could be surveyed, for the first time the new greater granularity now allows the identification of the source of emissions. An additional nine units are currently under manufacture at ABB to be launched by the end of 2022 ready to be on-board across the first private satellite constellation dedicated to emission measurement.


Sample Gas Compressor Coolers


Space offers the ideal location to freely monitor emissions across jurisdictions and quantitatively report on improvements. The ABB sensors will provide valuable insights which will enable governments and industries around the world to meet their emission reduction targets and reduce the negative impact on global warming.


“We selected ABB for its ability to deliver world-class instruments while meeting the challenges of a new space company like ours.“ said Stephane Germain, CEO of GHGSat. “We strive to innovate for the needs of the future, and we’re excited to work with ABB to achieve that.”.


Clarity’s technology will be used in the fight against London’s toxic air, giving local communities access to affordable and reliable air quality data at scale. Initially, more than 100 low-cost air quality sensors will be installed at London hospitals, schools, and other sensitive locations to complement London’s existing high-quality reference-grade monitors and to enable real-time measurement of ambient air pollution at the neighbourhood level.


“Air pollution is often described as an invisible killer. To optimise solutions it is imperative local communities are empowered with actionable data in real-time,” said Dr. Gary Fuller, air pollution scientist, Imperial College London. “The Breathe London project makes London the first city to holistically integrate low-cost sensors with existing air quality infrastructure. We are excited to be partnering with Clarity who will provide hardware and software to measure local air quality that is significantly lower cost and far easier to deploy than traditional equipment. A key strength of the Breathe London project will be at our new data centre, at White City in west London, where traditional and new lower-cost sensor data will be combined to provide Londoners with some of the highest-resolution air quality data in the world.”


Breathe London is funded by the Mayor of London and supported by Bloomberg Philanthropies. Installation of the new network of Clarity air sensors will be completed in tranches starting in January 2021, with full deployment of the publicly- funded sensors expected by June 2021. The network will continue to expand through community funding initiatives, coordinated by Imperial College London. “We are proud to partner with Breathe London to offer affordable air monitoring technology to London communities, and we are confident that this project represents a blueprint for governments across the globe who are working to pursue their own sustainability initiatives amidst rising air pollution and ongoing budget challenges,” said Meiling Gao, COO, Clarity Movement Co. “Clarity can be the technology partner to help governments worldwide push forward despite budgetary constraints and deploy modern air quality monitoring networks that serve and empower the local community.”


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“ABB shares GHGSat’s goal of reducing emissions through the creation of their greenhouse gas sensing constellation. Our selection as the manufacturer for these advanced sensors demonstrates our competitiveness and strong fit with the private space sector requirements.” said Marc Corriveau, General Manager ABB Measurement & Analytics Canada.


“The space revolution is well underway and ABB with its heritage of unique space instruments and serial production of advanced measurement sensors for industrial applications is extremely well positioned to serve this emerging sector.” he continued.


GHGSat announced the constellation contract award with ABB in October 2020, with first deliveries in 2021. The unit launched by SpaceX was a single unit procured by GHGSat from ABB two years ago ahead of a selection for the constellation.


With its involvement in the Canadian SCISAT mission and the Japanese GOSAT series of satellites, ABB has been at the forefront of the field of greenhouse gas sensing from space for more than two decades. ABB optical equipment already in space cumulates more than 100 years of reliable operation. The SCISAT sensor tracks long-term subtle composition changes in the earth’s atmosphere down to parts per trillion of more than 70 molecules and pollutants since 2003. Weather agencies across the world base their predictions on ABB equipment flying onboard the US National Oceanographic and Atmospheric Administration (NOAA) weather satellites (NPP and JPSS), which saves lives by improving the timeliness and accuracy of weather forecasts for up to seven days.


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Using Atomic Fluorescence Spectrometry for the online determination of Mercury (Hg), Arsenic (As) & Selenium (Se) in industrial wastewater streams


Hg, As, & Se are considered environmental priority pollutants. They do not degrade and can be derived from both natural and anthropogenic sources.


Traditional analysis of wastewater streams for these elements requires a grab sample to be taken and returned to the laboratory. This manual approach is reliant on staff availability and is subject to sample handling errors. Often pollution events may be missed as the data sets are incomplete and limited to the grab sample frequency.


An online automated approach eliminates sample handling errors, and the requirement for staff availability. This approach provides fast and continuous data sets allowing plants to operate efficiently and to respond quickly to changes in water quality without manual intervention.


Coupling Atomic Fluorescence Spectrometry (AFS) with either cold vapour generation or hydride generation has been PSA’s core competency for over 35 years and PSA now offer our third generation of online analysers for environmental monitoring based on novel sample and reagent handling capabilities. Multiple sample streams may be monitored (including grab samples) and these samples are automatically digested and prepared on-board prior to automated end-step analysis. The resultant analysers are sensitive, selective, have a wide working range, easy to use and consume very low reagent volumes.


Industries that particularly benefit from these new developments include; thermal power generators, oil and gas refineries and process plants, smelting operations, cement manufacturers and semiconductor fabrication plants.


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