18 Air Monitoring CLEANING UP AIR POLLUTION


Environmental Technology speaks to industry expert Tim Turney from Casella, a leading manufacturer of air monitoring equipment, about reducing site emissions to tackle air pollution


HOW DANGEROUS IS AIR POLLUTION?


Air pollution is the leading cause of environment-related deaths worldwide, estimated to result in seven million premature deaths—4.3 million from outdoor air pollution and 2.6 million from indoor pollution. It is now recognised that negative health impacts kick in at much lower levels than previously thought, and almost the entire world (99%) is breathing polluted air that exceeds internationally approved limits. The most dangerous pollutant for human health is fi ne particulate matter (PM2.5), produced by vehicles, wood burning, industry and farming.


In March 2022, the UK Government proposed to set air quality limits that would reduce levels of PM2.5 to 10 micrograms per cubic metre by 2040, representing a 35% reduction in population exposure, compared to 2018 levels. However, the targets fail to meet the PM2.5 concentrations recommended by the World Health Organisation (WHO), resulting in criticism from industry campaigners that the Government is not going far enough to tackle air pollution.


WHAT DO THE PROPOSED TARGETS MEAN FOR INDUSTRY?


As the air quality targets continue to undergo review, industry must be prepared to assess and actively reduce site emissions. The misalignment with WHO recommendations and widespread criticism from campaigners means companies should pre-empt the possibility of needing to go above and beyond the proposed targets.


Currently, PM2.5, which includes soot and dust, is widely spread by industry. According to the 2019 Lord Mayor’s report, construction alone is responsible for 15% of all London’s particulates. The common denominator is a combination of high population density and the sheer intensity of construction and demolition activity, which is synonymous with dust. However, advances in air quality


monitoring technology can help achieve the early detection of air contaminants, allowing businesses to reduce exposure for their workforce and surrounding communities.


HOW CAN AIR MONITORING TECHNOLOGY CUT HARMFUL EXPOSURE?


Air pollution measurement instruments serve multiple purposes: publishing dust information online to update the public and issuing cautionary statements if required. Having this data in real-time can ensure that the right people act when increased levels are reported and control measures can be put in place and continuously evaluated.


Environmental monitoring and protecting against potentially dangerous conditions can be diffi cult to manage without reliable data streams and monitoring of a site perimeter that gathers environmental data. For this reason, more and more companies are turning to boundary monitoring technology to measure the level of risk and make sure they adhere to environmental limits and guidelines, while also protecting against health hazards.


WHAT IS BOUNDARY MONITORING?


Boundary monitoring refers to the use of dedicated systems that monitor dust as well as noise and vibration, and for short-term detection of harmful contaminants in the soil around a worksite, to ensure that companies are complying with all applicable limits at work. Boundary monitoring systems are typically deployed across construction and demolition projects, environmental remediation sites, mining and quarrying, waste transfer, heavy road traffi c and other places where compliance-related monitoring is required.


Perimeter air monitoring is an important component of a construction worksite, helping companies to remain compliant with control measures required for them to carry out the project, paramount as new air quality targets are anticipated to come into force.


Boundary monitoring could help protect the reputation and revenues of construction companies and other industrial fi rms. If complaints arise, responsible companies using


boundary monitoring have proof points to show they have been diligent with their monitoring in operations and abiding by operational requirements. Data evidence from a boundary monitoring system is also helpful if a worksite is accused of issues caused by another operation, allowing site managers to respond rapidly, minimising reputational damage.


HOW LONG SHOULD BUSINESSES CARRY OUT AIR QUALITY MONITORING?


Air quality monitoring solutions such as Casella’s Guardian2 require little upkeep or maintenance while continually measuring conditions on or around a worksite and are designed for easy setup and use. If possible, baseline conditions should be established by testing before the start of operations and continued throughout the operation to observe site emissions and ensure compliance with planning conditions. The duration of monitoring should be suffi cient to take weather conditions and seasonality into account, as well as the effects of remedial measures.


Companies operating in fast-changing environments can also use a hand-held particulate monitor such as the Casella Microdust Pro to instantly detect dangerous concentrations of airborne particles during spot checks and walk-through surveys. Short-term dust monitoring is often used to quantify an existing problem and is suitable for identifying areas, or specifi c equipment on a site responsible for excessive dust generation.


As safety and environmental regulations have grown much tighter globally, it is becoming more important for employers to ensure they have adequate means to test the dust pollution levels in their workplaces to ensure the safety of their workers and surrounding communities. Having access to real-time, near-reference data can help achieve this and keep more people safe.


More information online: ilmt.co/PL/kqn0 For More Info, email:


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Versatile portable GC for wide range of environmental analytical applications


The portable GC 312 from PID Analyzers can be utilised for environmental, quality control, process & stack gas monitoring, natural gas, building & transportation security, arson & forensic applications.


Designed in its own carry case, the 312 will go anywhere with its light weight and rechargeable battery which lasts 8 hours. The 312 is pictured in the boot with an optional concentrator to achieve trace level analyses of a particular species, it has signifi cant data storage capability in a 2 GByte smart card, and a choice of excellent GC detectors. The system can accommodate up to two detectors and additional detectors can be added and easily interchanged by the user. This GC features a large colour display and is powered by a Pentium PC with Windows®


10 (embedded) operating system and onboard PeakWorks


Chromatography Integration Software. The principle of operation is gas chromatography with a series of detectors that can be easily


interchanged allowing the GC to be used for a variety of applications in the fi eld or the lab. The detector electronics are compact and modular and the detector can be changed by removing the column, connector and two screws. There are only three sets of electronics for the four detectors, so an upgrade only requires the purchase of a second or third detector and second electronics package. PeakWorks is a dual channel system. The GC will accommodate packed (1/8” or 1/16”), capillary (0.53 or 0.32 m id) or PLOT columns by any manufacturer on a 3.5: diameter spool) and an optional heated injector is used for liquid samples. The algorithms for data processing were taken from our powerful PeakWorks program and are incorporated in the embedded software.


Photoionisation detector (PID): VOCs, aromatics, unsaturated hydrocarbons, sulphur compounds and inorganic gases (hydrogen sulphide, arsine/phosphine, ammonia). It is an ideal detector for environmental analysis, and QC with its low ppb to % detection range; also fenceline, water, soil, fi eld measurements.


Thermal Conductivity Detector (TCD): Hydrocarbons, inorganic & fi xed gas response make this detector ideal for applications such as QC, natural gas analysis, LPG analysis, process streams, gas or liquid analysis... in the lab or fi eld- ppm to 100%


Far-Ultraviolet Absorbance Detector (FUV): Hydrocarbons, inorganic & fi xed gas response at levels 10-100 times lower than the TCD- also H2


O, O2 , N2 O at ppb to ppm levels


Flame-Ionisation Detector (FID): Responds to all hydrocarbons including methane- environmental fi eld measurements, landfi ll gases, oil patch monitoring.


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


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New heavy metal analysis in ambient air


Elvatech is a manufacturer of a range of EDXRF spectrometers for 31years. Established in 1991 Elvatech became one of the fi rst companies to start production of benchtop XRF spectrometers based on the using of Si-PIN Diode detectors.


Elvatech has lauched 2 new instruments: ProSpector 3 - the smallest, lightest and fastest handheld XRF analyzer on the market; ElvaX PmX-5050 – a revolutionary online elemental analyzer of heavy metals in the ambient air.


ElvaX PmX-5050 is a Continuous Particulate Matter XRF Analyzer intended for online elemental analysis of heavy metals in the ambient air.


Previous solutions for PM monitoring were able to analyze only the total amount of particles in the air. But for a complete understanding of health impact and air pollution source elemental analysis of PM is necessary.


PmX-5050 is a fully stand-alone device for continuous analysis of particulate matter elemental composition.


For More Info, email: email:


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