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Examining relationships between trace gases and criteria pollutants
Examining relationships between trace gases and criteria pollutants during winter in a mountain valley

Examining relationships between trace gases and criteria pollutants during winter in a mountain valley

In order to protect public health, the United States Environmental Protection Agency (EPA) has established national ambient air quality standards for six of the most common air pollutants—carbon monoxide, lead, ground-level ozone, particulate matter, nitrogen dioxide and sulfur dioxide—known as “criteria air pollutants”. The presence of these pollutants in ambient air is generally due to numerous diverse and widespread sources of emissions.



In order to protect public health, the United States Environmental Protection Agency (EPA) has established national ambient air quality standards for six of the most common air pollutants—carbon monoxide, lead, ground-level ozone, particulate matter, nitrogen dioxide and sulfur dioxide—known as “criteria air pollutants”. The presence of these pollutants in ambient air is generally due to numerous diverse and widespread sources of emissions.

A recent publication (attached) in the Journal of Geophysical Research reported the scientific work by a group of environmental scientists from University of Utah who closely examined the relationships between trace gases and criteria pollutants in Utah’s Salt Lake Valley. In particular they studied the relationship between excess CO2 -above baseline conditions- and other pollutants during various stages of particulate pollution episodes (no/during/after pollution). The work was performed in winter over 2 months, with a special focus during a week when cold air pools inhibited atmospheric mixing and enhanced pollutants accumulation. Various greenhouse gases and criteria pollutant measurements were performed from sample inlets situated at 33m above the ground. An LGR Ultraportable Greenhouse Gas Analyzer was used to measure CO2 and CH4 concentrations.


co2 processes


Cities are responsible for 70% of anthropogenic CO2 emissions globally. There is an ongoing global effort to measure CO2 in urban areas and master the processes controlling carbon emissions. The aim of the survey was to analyze relationships between urban CO2 concentrations and air pollutants in order to better understand transport and chemical processes during various meteorological conditions. The authors found that the excess CO2 is a good indicator (proxy) of the presence of co-emitted gaseous criteria pollutants and a reasonable indicator of fine particulates PM2.5. They also observed that the relationships between CO2 and criteria pollutants differ during different phases of cold air pool events which provide insight into meteorological and transport processes.


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Measuring ships SO2 emissions with OPSIS News: Measuring ships SO2 emissions with OPSIS

Last week during the ship's stopover at the harbour of Antwerp, the Envicontrol team has maintained the OPSIS analyser monitoring CO2 and SO2 on the “Nabucco” vessel.

New reference lab setup News: New reference lab setup

Envicontrol has installed the new reference lab of IBGE/BIM in their new building located in the “Jardin Massart” area in Brussels. The system delivered is made for calibration and validation of the devices used for the ambiant air monitoring networks in Belgium.

The installation contains MCZ’s central supervision system, MCZ’s calibrators with zero air system and dilution (to work with high concentration cylinders) and MCZ’s Lab equipment furniture.

The Envicontrol team has realised the full installation with the racks, laboratory tables, piping, wiring, communication… and commissioning.

Are you interested in such a system? Or would more information? Please drop a line to sales@envicontrol.com.

Automatic Sampling System for fine particulate matter News: Automatic Sampling System for fine particulate matter

The CIA (Conseil Ingénierie Acoustique) has chosen the PNS-18T of Derenda (reference method NF EN 12341) for a PM10 and PM2.5 measurement campaign in Ardèche (France). An installation by the Envicontrol team.

Gasera One GHG greenhouse gas analyzer has launched News: Gasera One GHG greenhouse gas analyzer has launched

Gasera One GHG greenhouse gas analyzer is based on the GASERA ONE platform combining ultra-sensitive cantilever enhanced photoacoustic detection technology with quantum cascade laser source operating at a Mid-IR fundamental spectral absorption line of the target greenhouse gases: methane (CH4) and nitrous oxide (N2O).

Making the invisible measurable News: Making the invisible measurable

Viruses can be transmitted via aerosols. The risk of transmission should be reduced as far as possible.

Opinions vary, however, on how to achieve this. Some believe that it is sufficient to increase the air exchange rate of rooms. Others call for installation of highly efficient air purifiers in all classrooms, conference rooms, or doctor’s waiting rooms not connected to an appropriately designed central air filtration system, as a general rule.


Official repair centre ABB-LGR from Europe News: Official repair centre ABB-LGR from Europe

ABB, a world leader in analytical measurement equipment, has appointed Envicontrol as official European repair centre for any ABB-LGR device.

Located in Belgium, the Envicontrol lab is fully equipped and a whole skilled, trained and motivated staff is ready to service your devices with top-notch support in the shortest delay.


To get a quote for regular maintenance, calibration or spare parts delivery, don’t hesitate to
contact us and use our formal address sales@envicontrol.com.
For any technical question or remote support, please use our central address support@envicontrol.com.

To send us an instrument for preventive or curative maintenance, please request an RMA on our website and the team will take care.

Droplet products in Europe News: Droplet products in Europe

Droplet Measurement Technologies (DMT), an exclusive range of products specialised in aerosol distributed now by Envicontrol in Europe.

Get the technology you need to build climate models, monitor emissions, improve air quality, inform cloud seeding, or ensure proper icing certifications for aircraft safety. Do all this and more with instruments made to help you solve your research challenges.

Have a look at the broad panel of solutions offered for:

For any question, never hesitate to contact us.

Real-time monitoring of low formaldehyde concentration in outdoor and indoor ambient air! News: Real-time monitoring of low formaldehyde concentration in outdoor and indoor ambient air!

Thanks to the clever combination of an ultra-sensitive cantilever enhanced photoacoustic detection technology and a Quantum Cascade Laser source, the Gasera One Formaldehyde is able to provide enough sensitivity (sub-ppb level!) to reliably measure ambient background levels of formaldehyde in real time.

We participate in various fairs and seminars around Europe where we can keep you informed of the latest developments and possibilities in the field of measurement and analysis equipment. Below you will find an overview of the events we visited recently and the events where you can meet us soon.

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Envicontrol Belgium

P +32 (0) 81 713 491

Rue Phocas Lejeune 25
B-5032 Les Isnes
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Envicontrol Deutschland

P +49(0)221 7907 7054

Waidmarkt 11
DE-50676 Köln
Deutschland

Envicontrol France

P +33(0)1 39 76 04 19

Route de Sartrouville 54
F-78230 Le Pecq
France

Envicontrol Nederland

P +31(0)418 651 158

Valeton 25
5301 LW Zaltbommel
Nederland
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