medir pm indoor

After the recent news related on the alerts about high levels of air pollution in cities like Paris or Madrid, it reasserts that the issue of air pollution, both indoors and outdoors, is a major environmental health problem affecting developed and developing countries alike. Currently, pollution is a major environmental risk to health and is estimated to cause about two million premature deaths a year worldwide.[1]

Depending on location, different levels of concentrations of particles are obtained. Thus, in a residential and commercial environment , ie, private homes, hotels or offices, comfort and health are very important factors. In industrial applications, such as hospitals, manufacturing plants, factories and precision electronic instruments, energy costs, pollution control and production environments are major concerns. High levels of air pollution can cause from health complaints to productivity decrease, product contamination, etc.

We can find air pollutants in the form of gases and particulate matter, and they are introduced into the atmosphere from natural and anthropogenic sources. Therefore, knowing the concentration of pollutants in an area in which millions of people live, become important when there are sources or factors that tend to increase the concentrations of these pollutants.

One of the most common way to calculate indoor particulate levels are particle meters. Currently there are many technologies which enable the measurement, firstly, of the number of particles and, on the other hand, of the density of them.

The particle density meters are light scattering laser photometers with data registration powered by batteries that provide aerosol mass readings in real time at high concentrations up to 400 mg/m3. They use an air insulating sheath on optical spray chamber to maintain the optics clean and thus ensure enhanced reliability .

On the other hand, particle counters allow users to take snapshot samples and get real-time indication of the burden of particles in a room or space. Its operation is based on the principle of light scattering by a light source that is usually a laser diode. With this, you can count the most popular sizes of particles such as 0.5 – 1.00 – 5.00 and 10 micrometers.


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