pixel
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.


Go back to overview

Stay informed? Sign up!

Register yourself for our meetings and trainings. For more details please click on the event you are interested in.

Questions? Please ask!

We are happy to answer all of your question, you can even send it online via our contactpage.
Contact us
  • Exclusive contracts with various suppliers of high-tech measurement equipment.
  • We modify and integrate products in a solution.
  • Our own laboratories guarantee fast and optimal services.
Teledyne API
LNI
LGR
MET ONE INSTRUMENTS
TEKRAN
PALAS
Micro Pulse LiDAR, part of Hexagon
SYNSPEC
LSE monitors
OPSIS LiquidLine
Derenda
OPSIS
ABB Water
Mega System
2B technologies
SK Elektronik
ENVITECH
CLIMATRONICS
Gasera
Droplet
Our dear Stéphane passed away. News: Our dear Stéphane passed away.

It is with profound sadness that we must announce that our dear Stéphane Loyen passed away at 2021 sunset.
Civil engineer with industry and metrology background, Stéphane had joined Envicontrol as operations manager in 2009. As a partner and general manager as of 2013, he built a wider and stronger company structure while helping to expand the product portfolio and embrace new markets.
Thanks to Stéphane’s strategic vision and stubborn work, Envicontrol is more than ever in order of battle to take up the future challenges with dedicated management team and skilled workforce.
Thank you and farewell, Chef!

VMM chooses for TAPI-400 O3 monitors again! News: VMM chooses for TAPI-400 O3 monitors again!

Vlaams Milieu Maatschappij, the Belgian Air Quality Monitoring authority for the Flanders region (VMM – www.vmm.be) has chosen to work with Envicontrol for monitoring ozone (O3). Twenty T400 analysers from TAPI will be supplied starting early 2022.

Droplet's Mini Micro Pulse LIDAR News: Droplet's Mini Micro Pulse LIDAR

The Mini Micro Pulse LiDAR (MiniMPL) is a small form factor, low-power, elastic backscatter lidar. The instrument is a ground-based, optical, remote-sensing system designed to determine the altitude of clouds and to detect atmospheric aerosols.

ISSeP chooses Tekran again News: ISSeP chooses Tekran again

After more than 10 years of experience in mercury trace gas monitoring with Tekran devices, ISSeP (Institut Scientifique de Service Public - Belgium), has renewed his confidence in the product by buying the new Tekran 2537X. This analyser, based on gold preconcentration with atomic fluorescence detection principle, measures the total gaseous mercury (TGM) with a sensitivity lower than 0.1 ng/m3.

Cloud, aerosol and precipitation spectrometer with depolarization News: Cloud, aerosol and precipitation spectrometer with depolarization

The CAPS-DPOL is a multipurpose, research-grade cloud spectrometer that includes three Droplet instruments (CIP, LWC, and CAS), temperature and relative humidity sensors and polarization measurement to discriminate between water and ice.

Monitoring low levels of formaldehyde in ambient air News: Monitoring low levels of formaldehyde in ambient air

Formaldehyde, chemical formula HCHO or CH2O, is a colorless gas with a pungent odor. Levels above 0.1 ppm can cause allergy and acute health problems, e.g. sore throat, skin irritation, nausea, scratchy eyes and cough. Formaldehyde (HCHO) is also classified as highly carcinogenic compound. Exposure to moderate amounts of HCHO has been linked to cancer, such as leukemia.

New carbon dioxide isotope analyzers News: New carbon dioxide isotope analyzers

Stable isotopes act as tracers for studying flows and fluxes of material through ecosystems and the atmosphere. In practice, scientists measure the stable carbon isotope content of air, plants and soil to quantify many phenomena including the recycling of carbon dioxide within forests, water use efficiency, partitioning ecosystem carbon exchange into its components, gross primary productivity and ecosystem respiration, and to identify and quantify the distribution and contributions of plant species to global productivity. In addition, stable isotopes of carbon may be used to determine the effectiveness of carbon sequestration strategies. For these studies, investigators require fast, accurate measurements over a wide range of carbon dioxide concentrations.

ABB LGR-ICOS Carbon Dioxide Isotope analyzers exceed all of these requirements.

Cloud Condensation Nuclei (CCN) counter News: Cloud Condensation Nuclei (CCN) counter

Droplet's CCN-100/200 measures the count and size of individual aerosol particles that can form into cloud droplets. Its fast response time allows use in either airborne or ground-based stations.

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.

Contactinformation

Envicontrol Belgium

P +32 (0) 81 713 491

Rue Phocas Lejeune 25
B-5032 Les Isnes
Belgium

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
Equipment selector

Loading...

Show Video

Watch our Video

In this video Envicontrol commits to give a answer on instrumentation, formation and maintenance.