Exposure to dust, endotoxin and micro-organisms in the potato processing industry

Zock, Jan‐Paul; Heederik, Dick; Kromhout, Hans

doi:10.1016/0003-4878(95)00051-8

Cited by 31 publications

(41 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For area samples the lower and upper CI are 0.004 and 0.006 fWcm -3 , respectively, and for personal samples the lower and upper CI are 0.019 and 0.029 f W cm -3 , respectively. These analyses suggest that personal samples have a higher airborne concentration than area samples as has been reported in other publications [35,45,47,[50][51][52]. A higher personal concentration as compared to area concentration also has been reported to be statistically different in non-asbestos exposure studies [47,51].…”

Section: Discussionsupporting

confidence: 64%

“…Such factors and activities may explain the previously reported relationship for area and personal sample measurements [35]. Regardless, caution must be applied when employing area sample data for determination of occupational exposure, in that these data may not represent the actual airborne exposure concentration to workers [35,38,52,100]. Area samples may provide a higher or similar concentration to personal measurements since these stationary devices can be placed at fixed locations where the highest levels occur [35,48,93].…”

Section: Discussionmentioning

confidence: 90%

See 1 more Smart Citation

A Statistical Evaluation of Asbestos Air Concentrations

Lange¹

1999

Indoor Built Environ

View full text Add to dashboard Cite

Both area and personal air samples collected during an asbestos abatement project were matched and statistically analysed. Among the many parameters studied were fibre concentrations and their variability. Mean values for area and personal samples were 0.005 and 0.024 f·cm^–3 of air, respectively. Summary values for area and personal samples suggest that exposures are low with no single exposure value exceeding the current OSHA TWA value of 0.1 f·cm^–3 of air. Within- and between-worker analysis suggests that these data are homogeneous. Comparison of within- and between-worker values suggests that the exposure source and variability for abatement are more related to the process than individual practices. This supports the importance of control measures for abatement. Study results also suggest that area and personal samples are not statistically related, that is, there is no association observed for these two sampling methods when data are analysed by correlation or regression analysis. Personal samples were statistically higher in concentration than area samples. Area sampling cannot be used as a surrogate exposure index for asbestos abatement workers.

show abstract

Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 90%

A Statistical Evaluation of Asbestos Air Concentrations

Lange¹

1999

Indoor Built Environ

View full text Add to dashboard Cite

show abstract

“…There is recent evidence that chronic exposure to endotoxin-containing organic dust is associated with airway remodeling (6). Despite a clear recognition that inhaled endotoxin is an occupational hazard in agricultural settings (8,12,19,20), cotton processing (11), vegetable processing (10,31), fiberglass manufacturing (16), and metal machining environments (23,24), there are no established occupational exposure limits in the United States or Canada. This is largely due to the fact that endotoxin exposure assessment methods have not been adequately optimized and validated.…”

mentioning

confidence: 99%

Comparison of Endotoxin Exposure Assessment by Bioaerosol Impinger and Filter-Sampling Methods

Duchaine¹,

Thorne

Mériaux³

et al. 2001

Appl Environ Microbiol

View full text Add to dashboard Cite

Environmental assessment data collected in two prior occupational hygiene studies of swine barns and sawmills allowed the comparison of concurrent, triplicate, side-by-side endotoxin measurements using air sampling filters and bioaerosol impingers. Endotoxin concentrations in impinger solutions and filter eluates were assayed using the Limulus amebocyte lysate assay. In sawmills, impinger sampling yielded significantly higher endotoxin concentration measurements and lower variances than filter sampling with IOM inhalable dust samplers. Analysis of variance for repeated measures showed that this association remained after controlling for other factors such as replicate, sawmill, sawmill operation, wood type, and interaction terms. Endotoxin concentrations in the swine barns were 10-fold higher on average than in sawmills. These samples demonstrated comparable endotoxin concentration estimates for impinger and filter methods although the variability was lower using the impinger method. In both occupational settings, side-by-side replicates were more uniform for the impinger samples than for the filter samples. This study demonstrates that impinger sampling is an acceptable method for quantitation of area endotoxin concentrations. Further, when sampling is performed with impingers for airborne microorganism quantitation, these same impinger solutions can yield valid endotoxin exposure estimates, negating the need for additional filter sampling.

show abstract

“…Agricultural and food industries introduce various dangers because organic dust in these sectors is frequently associated with endotoxins, mycotoxins and microorganisms (Zock et al, 1995). Granular products generate high quantities of particles during conveying, loading and unloading from hoppers, trailers, and grain silos.…”

Section: Pm Health Effects In Agriculturementioning

confidence: 99%