Table 2 Asbestos exposure levels by process step in Korean asbestos textile industry (1987–1994)
From: Ovarian cancer in a former asbestos textile factory worker: a case report
Period | Content | Results (geometric mean, fiber/cc) | Measurement method |
|---|---|---|---|
1987 | Personal exposure assessment | Overall: 4.4 Fiberizing/Mixing: 4.5 Carding: 3.8 Spinning: 5.6 Twisting: 4.8 Weaving: 5.3 | Phase Contrast Microscope |
Local concentration assessment | Overall: 5.7 Fiberizing/Mixing: 8.7 Carding: 6.6 Spinning: 6.6 Twisting: 5.2 Weaving: 5.5 | ||
1988–1989 | Personal exposure assessment | Fiberizing/Mixing: 0.23–3.69 Carding: 0.08–9.44 Spinning: 0.3–9.73 Twisting: 0.08–14.9 Weaving: 0.07–5.6 | |
1990 | Personal exposure assessment | Carding: 0.38–17.3 Spinning: 0.26–15.0 Twisting: 0.1–12.6 Weaving: 0.28–17.2 | |
1992 | Personal exposure assessment | Overall: 0.07–0.67 | |
1994 | Personal exposure assessment | Mixing: 0.22–1.2 Carding: 0.23–9.24 Spinning: 0.41–8.93 Twisting: 0.21–9.83 Weaving: 2.61–11.58 | |
Local concentration assessment | Mixing: 0.42 Carding: 0.61–10.93 Spinning: 0.78–3.65 Twisting: 1.01–9.66 Weaving: 3.18 |