Fate and Transport of Micro-organisms in Air

The atmosphere is inhospitable place for microbes because of stress due to environmental factors like desiccation, temperature, relative humidity, radiation and oxygen. The majority of airborne micro-organisms are immediately inactivated as the result of this.

Those hardy microbes that can survive these factors are able to cause the diseases.

Oxygen stress relates to the reactive oxygen species. Another term, Open Air Factor (OAF) in this connection describes the environmental effect that cannot be replicated in the laboratory settings.

When ozone and hydrocarbons (usually ethylene) alone with the oxygen act together the inactivation rates of microbes is greatly affected. Micro-organisms like fungi cannot survive and complete their life cycles by staying afloat in air for an indefinite period of time. Bioaerosols in the air harbor the microbes.

Read Also: Air Microbiology and Causes of Air-Borne Diseases

They vary in size. Large droplets in the air are of 100 μ and like dust, settles rapidly in quiet air. Small droplets on the other hand in warm, dry atmosphere dry quickly to form droplet nuclei. These are of 2-5 μm size, light and may float about for many minutes or even hours.

Fate and Transport of Micro-organisms in Air

The micro-organisms in them are protected by dried mucus which coats them. Being small, these escape the mechanical traps of the upper respiratory tract and enter the lungs. They may settle on the alveolar tissue. Transmission of airborne pathogens usually occurs via droplet nuclei.

The aeromicrobiological pathway (AMB) describes the launching of the aerosols in the air, the subsequent transport via diffusion and dispersion, and finally their deposition e.g. droplet nuclei having influenza virus which is launched via coughing, sneezing or taking in the air.

Do you have any questions, suggestions, or other contributions? Kindly use the comment box provided below for all your contributions. You are also encouraged to please kindly share this article with others you feel can benefit from this information if found useful enough as we may not be able to reach everyone at the same time. Thank you so much for sharing!

Benadine Nonye

An Agric. Consultant & a Writer (With over 12 years of professional experience in the agricultural industry) - National Diploma in Agricultural Technology - Bachelor's Degree in Agricultural Science - Master's Degree in Science Education... Visit My Websites On: Agric4profits.com - It's All About Agriculture, The Way Forward! Agric4profit.com - The Most Reliable Global Agricultural Forum! Agric4profit.com.ng - The Most Reliable Nigeria's Agricultural Job Board! TheAgriPedia.com - For Everything Premium Agriculture! WealthinWastes.com - For Proper Waste Management and Recycling Practices. Join Me On: Twitter: @benadinenonye - Instagram: benadinenonye - LinkedIn: benadinenonye - YouTube: Agric4ProfitsTV - Pinterest: BenadineNonye4u - Facebook: BenadineNonye

Leave a Reply

Your email address will not be published. Required fields are marked *