Aerobiological studies based in Derby. I. A simplified automatic volumetric spore trap

Area of Science:

• Aerobiology
• Environmental Science
• Mycology

Background:

• The Hirst automatic volumetric spore trap is a standard tool in aerobiology.
• Existing traps may have limitations in collecting certain types of airborne particles.

Purpose of the Study:

• To develop and evaluate a simplified, cost-effective volumetric spore trap for aerobiological studies.
• To compare the spore collection efficiency of the new trap against established methods.

Main Methods:

• A simplified Hirst-type automatic volumetric spore trap, termed the Morrow Brown trap, was designed and constructed.
• Comparative trials were conducted to assess spore retention efficiency for different particle sizes (e.g., Alternaria, grass pollen, Sporobolomyces, Tilletiopsis).
• Modifications, including a narrower slit, were implemented to enhance impaction efficiency.

Main Results:

• The Morrow Brown trap demonstrated comparable or superior collection efficiency across various spore types.
• Collection efficiency was 102% for large spores (Alternaria), 136% for grass pollen, and 166-201% for very small spores (Sporobolomyces, Tilletiopsis).
• Impaction efficiency was improved through the use of a narrower slit.

Conclusions:

• The simplified Morrow Brown trap is an effective and potentially more accessible tool for aerobiological monitoring.
• The trap offers design advantages and improved performance, particularly for smaller airborne particles.
• This development facilitates more efficient aerobiological studies and environmental monitoring.