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52 AIR MONITORING
Fast and dependable total mercury monitoring
Mercury emissions from waste incinerators and other industrial facilities are often strictly regulated. This calls for monitoring of mercury concentrations. That is not always an easy task, but there is a method available giving
the true total mercury content in the flue gas.
Opsis has developed a method for fast and precise measurements of total mercury (THg) for continuous emissions monitoring purposes - System 400. The flue gas from the combustion process is extracted and sent to a converter where any compound- bound mercury is released to form atomic mercury, Hg0. The concentration of Hg0, and thereby effectively the concentration of THg in the flue gas, can then easily be determined using the proven Opsis DOAS gas analysers. The same monitoring system can also be configured to measure concentrations of a number of other gases, such as NO, NO2
, SO2 , CO, CO2 , NH3 , H2 O, HF, and
HCl, thereby constituting a very cost-effective monitoring solution operating with a minimum of maintenance.
Through utilising the Opsis System 400, full control is gained within mercury monitoring. Using the same single system, you can both control the flue gas cleaning process and document the emission levels as required by the authorities.
Opsis System 400 is internationally certified and approved and has been installed at industrial facilities all over the world. For More Info, email:
52752pr@reply-direct.com World-leading humidity measurements take to the cloud
Vaisala have introduced their new cloud-based Vaisala Jade Smart Cloud system for professionals who want to access high-quality measurement data anywhere, at any time. The data can be viewed on the go; on a mobile device, such as mobile phone or tablet, and on a pc or laptop. The Jade Smart Cloud is ideal for any structural moisture or ambient humidity measurement monitoring needs on the go, because it keeps users updated on critical measurements continuously.
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Typical applications for the Vaisala Jade Smart Cloud system are, for example, concrete moisture measurements on construction sites and ambient humidity measurement monitoring in data centres, museums or other public buildings, and livestock production facilities.
“Cloud-based monitoring makes the actual operations more efficient, as time is no longer wasted in setup and pairing of hardware with software, or frequent visits to the various measurement sites,” explains Product Manager Lars Stormbom from Vaisala.
In addition to streamlined work, the system brings benefits in terms of providing regular automated software updates without any downloads, and increased collaboration by making it easy to share live or stored data with colleagues and customers. Additionally, the cloud-based system increases data safety and control.
“All measurement data is stored safely in the cloud where it can be viewed through the web browser on mobile devices. Cloud data can be accessed in real-time using a computer or a smart-phone and downloaded for further analyses. All data is stored in a tamper-proof format in the cloud, with a timestamp of the measurement,” Stormbom continues.
The system consists of CWL100 Wireless Dataloggers with probes, a CA10 Access Point and the Jade Smart Cloud software license. When measuring concrete moisture, probes can be placed directly inside boreholes, or they can be mounted on the wall.
CI Analytics introduces contactless technique using their Laser analyzer for GAS:
• 4 Markets served (Environmental, Petrochemical, CEM & Industrial Process Control)
• 3 Possible levels of detection (factory-installed) • 3 Analyzer confi gurations (Portable, LAB, Process) • 1 Second analysis (Application specifi c) • 0 Interferences for target impurity based on absorption line selected
Available for general area, hazardous locations. Laser: Precision & stability hand-in-hand.
t. 450.658.4965 f. 450.658.3428 e.
info@cianalytics.ca w.
cianalytics.com
“There are already more than 100,000 borehole measurements made annually with Vaisala instruments. With the Jade Smart Cloud, we’re providing the same measurements our customers already trust, in a smart new way that just simply makes life easier,” Stormbom concludes.
Vaisala Jade Smart Cloud uses Vaisala proprietary LoRa-based radio protocol. Data encryption is used end to end, and the data is saved securely in the cloud.
Vaisala Jade Smart Cloud will be available in the European Economic Area in June 2020 in Finnish and English.
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JCT stands for reliable transfer of sample gas from the stack to the analyzer to ensure trust-worthy results
Air quality monitoring at 40°C below zero!
Gas Sampling Probes
Portable
Gas Conditioning Systems
Sample Gas Compressor Coolers
Most people think of the Arctic as a highly pristine clean environment, but this is not always the case. During the long dark Arctic winter, the urban atmosphere can become extremely polluted. Indeed, at some point during the year, the remote Alaskan city of Fairbanks turns into the most polluted city in the whole of the US.
This is due to the very cold Arctic winter when emissions of gases and particles (such as from wood-burning stoves, traffic, power stations) can become trapped locally at ground level due to the very stable meteorological conditions, with poor vertical mixing. Concentrations of gases and particles thus become very high, exceeding air quality limits as set out in The Clean Air Act and managed locally by the Alaska Department of Environmental Conservation. Fairbanks, Alaska is currently designated as a non-attainment area for PM2.5 and a maintenance area for carbon monoxide.
In order to better understand these conditions, a research team was established to quantify air pollution in Fairbanks throughout the Arctic winter. Scientists Tjarda Roberts, Kathy Law, and Bill Simpson plus other experts from CNRS France research laboratories (LPC2E, LATMOS, …) and the University of Alaska Fairbanks USA are pursuing several objectives that can inform effective decision making to improve air quality. Specifically, to characterise local emission sources, understand the atmospheric processing of gases and particles and correlate the measurements of the atmospheric pollutants with observations of the local meteorology and boundary-layer conditions.
Tjarda Roberts explains, “for this, we needed reliable, automated instruments that could withstand the harsh Arctic winter conditions. We deployed two Praxis instruments from South Coast Science throughout the whole winter season (November 2019 to April 2020) to characterise gas and particle pollution at various sites across Fairbanks.”
“The instruments measured CO, NO, NO2, Ozone, and size-resolved particles and operated autonomously throughout delivering high- resolution air quality data in real-time (via SIM card). The Praxis proved to be highly reliable under the extreme Arctic conditions, even as temperatures reached as low as -40 C.”
This work by Roberts et al. has an important contribution to make towards improving air quality and human health in the region. This isn’t a new problem. Back in 2018, the American Lung Association identified Fairbanks as the number one most polluted city for year-round particle pollution. This problem was compounded further last year by raging forest fires, reportedly degrading the air quality across most of the state.
Last winter’s air measurement campaign* precedes a bigger international-effort on arctic wintertime atmospheric chemistry that is planned for this coming Winter in Fairbanks (unless delayed by Covid19), to which the US has committed significant funds in a project called ALPACA (Alaskan Layered Pollution And Chemical Analysis). The campaign was funded by the French National program LEFE (Les Enveloppes Fluides et l’Environnement), IPEV, Paris-OVSQ and Orléans Labex Voltaire.
Where significant funds have been committed to assisting the understanding of air pollution, it is important that the outcomes provide value for money and support real, positive change. The high reliability of devices and measurements in this challenging environment creates robust data outputs. It also allows the researchers to concentrate on more sophisticated modelling. The incentives for change are made visible resulting in increased possibilities for action on air quality.
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