Cotton dust concentrations and particle size distributions associated with genotypes

Area of Science:

• Occupational Health
• Textile Science
• Environmental Science

Background:

• Byssinosis, a respiratory disease, has historically affected cotton textile mill workers.
• Current regulations by OSHA and ACGIH necessitate accurate measurement of airborne raw cotton dust.
• Understanding cotton dust characteristics is vital for worker protection and regulatory compliance.

Purpose of the Study:

• To measure cotton dust characteristics, specifically mass concentration and particle size distribution.
• To evaluate the impact of harvesting methods (hand vs. spindle) on cotton dust.
• To analyze the influence of different cotton genotypes on dust properties.

Main Methods:

• Utilized the mass concentration particle size distribution (MCPSD) technique.
• Employed a Coulter Counter, Model TAII, for dust analysis.
• Analyzed cotton genotypes from three harvest seasons, comparing hand and spindle harvesting.

Main Results:

• Presented dust concentration data for particles <100 micron, <16 micron, and <8 micron in diameter.
• Demonstrated variations in dust characteristics based on harvesting method and cotton genotype.
• Discussed a novel procedure for generating larger quantities of cotton dust from gin trash.

Conclusions:

• The MCPSD technique provides essential data on cotton dust properties.
• Harvesting methods and cotton genotypes are key factors influencing airborne dust.
• Further research into dust generation and control is warranted for byssinosis mitigation.