Personal exposure to microbial agents, dust, and ammonia during farm work (TWA exposure on the measurement day until symptoms were recorded)
| Agent | n2-150 | TWA exposure2-151 | |||
|---|---|---|---|---|---|
| AM | GM | GSD | |||
| Total dust (mg/m3) | 106 | 0.84 | 0.31 | 4.2 | |
| Organic dust (mg/m3) | 99 | 0.28 | 0.047 | 9.0 | |
| Silicon rich dust (mg/m3) | 99 | 0.081 | 0.021 | 7.8 | |
| Other inorganic dust (mg/m3) | 99 | 0.49 | 0.16 | 4.7 | |
| Fungal spores (106/m3) | 106 | 1.2 | 0.099 | 16 | |
| Total bacteria (106/m3) | 104 | 2.5 | 0.56 | 7.7 | |
| Rod shaped bacteria (106/m3) | 99 | 0.22 | 0.024 | 11 | |
| Actinomycetes spores (106/m3) | 106 | —2-152 | —2-152 | —2-152 | |
| Endotoxins (103EU/m3) | 105 | 13 | 1.2 | 14 | |
| β(1→3)-glucans (μg/m3) | 90 | 6.4 | 0.82 | 14 | |
| EPSPen/Asp 2-153(mgeq/m3) | 62 | 0.14 | 0.022 | 10 | |
| Mites2-154 (mite units/m3) | 85 | 1.4 | 0.004 | 110 | |
| Ammonia2-155(mg/m3) | 55 | 0.9 | 0.51 | 4.2 | |
↵2-150 Number of measurements.
↵2-151 8 h time weighted average exposure; AM=arithmetic mean; GM=geometric mean; GSD=geometric SD.
↵2-152 Not estimated because of many data below detection limit.
↵2-153 Extracellular polysaccharides specific forPenicillium andAspergillus species.
↵2-154 Surrogate measure, see the text.
↵2-155 Ammonia was only measured when exposure was likely and otherwise assumed to be 0 in computation of cumulative exposure.