OPSIS Blog

Keep an Eye on Ozone

Bengt Löfstedt
General, AQM
2022-09-16
View Count 6611

Stratospheric ozone is a blessing. It prevents most of the sun’s ultraviolet radiation from reaching the surface of the earth, and thereby protects surface-dwelling life from damaging UV rays. At the same time, ground-level ozone is a major air pollutant. Let’s take a closer look at the latter phenomenon.

Air Quality Monitoring in the EU – What, Where, and How?

Bengt Löfstedt
AQM
2022-03-29
View Count 9212

Air quality is essential to all of us, and consequently, so is the monitoring of air quality. However, what should be monitored, and where, and how? There are many bids on that. For example, the European Union has set minimum requirements on the surveillance of the air we breathe. Let’s have a closer look!

Buying AQM Equipment or AQ Data? It’s Your Choice

Bengt Löfstedt
AQM
2019-06-04
View Count 4606

In the traditional approach to air quality monitoring, those “who wants to know” have also owned and maintained the monitoring equipment generating the answers. However, recent years’ slimmed organizations have opened up for an alternative: to buy air quality data instead of hardware. What are the pros and cons of the two approaches?

Real Driving Emissions: Meaning and Monitoring

Bengt Löfstedt
Vehicle Emissions
2018-11-01
View Count 4626

Today, pollutant emissions from road traffic is a hot topic, both for legislators, the vehicle industry, and a concerned public. What steps have been taken to reduce the emissions, and how is compliance with the latest standards monitored?

Finding Air Pollution Solutions by Tracking Particulates and Gases

Svante Wallin
AQM
2018-05-01
View Count 5489

Tracking and reporting pollutant levels of PM2.5, ozone, and household air pollution over time are important in order to find solutions to reduce exposure of air pollution to human health.

What is the Difference between a PM2.5 Monitor and a PM10 Monitor?

Bengt Löfstedt
General, AQM
2018-04-04
View Count 12839

There are several similarities between a PM_2.5 Monitor and a PM₁₀ Monitor, but there are also some differences. Let us explain how and why.

What is the Difference between a gas analyser and a gas monitor?

Bengt Löfstedt
AQM, CEM
2018-03-15
View Count 14607

Can there really be a difference between what a gas analyser is and what a gas monitor is? Or maybe it's the same? Let us sort it out for you.

Operating Principle of an Oxygen Monitor

Bengt Löfstedt
Marine, CEM
2018-02-22
View Count 6966

Why measure the oxygen concentration in the flue gas in a combustion process? And what is the difference between measuring the oxygen concentration with a zirconia cell vs. a DOAS system?

Air Quality Monitoring

Bengt Löfstedt
AQM
2018-02-03
View Count 12487

Measuring the ambient air quality can be done in several different ways and in different places, but why is it important to monitor, and what should you think about? Here are some guidelines.