Fragmentation of cotton bract and a technique for detecting bract in cotton dust.

Details

• Personal Author:
  Morey, Philip R. ; Raymer PL
• Description:
  Structural and friability changes occurring in cotton bract during postanthesis development were investigated and a fluorescent dyeing technique for following the micronization of cotton bract was developed. Observation of tissue sections prepared from bracts showed that the change in friability was associated with an increased number of lignified bundle sheath parenchyma cells and tracheary elements in bract veins. Other anatomical changes accompanying bract senescence included significant decreases in epidermal, mesophyll, and lamina thickness at or shortly after the time of capsule dehiscence. Dyed plant trash was distinguished from undyed trash particles of the same size by observation with an epifluorescence microscope. The authors conclude that this tracer technique can be used to establish what proportion of respirable dust emitted in the textile mill is directly attributable to the cotton bract. [Description provided by NIOSH]
• Subjects:
  Dust Environmental Monitoring Gossypium Manufacturing And Industrial Facilities Occupational Health Particulate Matter Respiratory Tract Diseases Safety Textile Industry
• Keywords:
  NIOSH-Publication; NIOSH-Grant; Control-technology; Air-sampling-equipment; Particulate-dust; Particulate-sampling; Pulverization; Analytical-methods; Airway-response-disorders; Respiratory-system-disorders; Textile-industry; Cotton-mill-workers; Cotton-dust; Cotton-ginning
• ISSN:
  0002-1962
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 6 ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  70
• Issue:
  4
• NIOSHTIC Number:
  nn:00091820
• Citation:
  Agron J 1978 Jul-Aug; 70(4):644-648
• Contact Point Address:
  Biological Sciences Texas Tech University Post Office Box 4149 Lubbock, Ten 79409
• Federal Fiscal Year:
  1978
• NORA Priority Area:
  Research Tools and Approaches: Control Technology and Personal Protective Equipment
• Performing Organization:
  Texas Tech University, Lubbock, Texas
• Peer Reviewed:
  True
• Start Date:
  19770601
• Source Full Name:
  Agronomy Journal
• End Date:
  19790531
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/247476/cdc_247476_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]