Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Presence of endotoxins in different agricultural environments.

Authors
Olenchock-SA; May-JJ; Pratt-DS; Piacitelli-LA; Parker-JE
Source
Am J Ind Med 1990 Sep; 18(3):279-284
NIOSHTIC No.
00196829
Abstract
The occurrence of gram negative bacterial endotoxins in different agricultural environments was evaluated. Airborne endotoxin generation was quantified for two farming activities, including the chopping of baled corn stalks or straw for bedding in New York State and oat bin unloading in Alabama. Dust samples were collected through closed face two piece cassettes onto polyvinylchloride filters and transported to the laboratory for endotoxin analyses. Samples were taken during the operation of bedding choppers from three barns; mean total dust levels ranged from a low of 8.6mg/m3 to a high of 40.9mg/m3. Total dust exposure as measured by personal samplers ranged from 11.2mg/m3 to 69.4mg/m3. Endotoxin levels were found to vary markedly, with the highest concentration 27,096.2 endotoxins per cubic meter (EU/m3) being forty seven times greater than the lowest measured level. However the lowest value of 365.5EU/m3 far exceeded the calculated threshold level of 90EU/m3 at which acute pulmonary function decrements occur in cotton dust exposed individuals. Endotoxin contamination of laboratory generated dust from an oat sample likewise exceeded these levels. The authors conclude that the study documents the presence of potentially hazardous exposures to endotoxins in two common farm processes; further research into the distribution of endotoxins in different farming activities, in different geographical areas, and during different climatic conditions is needed to describe the overall respiratory risks to farmers, their families, and workers.
Keywords
NIOSH-Author; Agricultural-industry; Agricultural-workers; Dust-sampling; Bacterial-dusts; Grain-dusts; Dust-analysis; Occupational-exposure; Exposure-levels
CODEN
AJIMD8
Publication Date
19900901
Document Type
Journal Article
Fiscal Year
1990
NTIS Accession No.
NTIS Price
Issue of Publication
3
ISSN
0271-3586
NIOSH Division
DRDS
Source Name
American Journal of Industrial Medicine
State
AL; NY; WV
TOP