Table 2 |
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|
Personal total dust exposures during different activities among coffee workers and controls |
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|
Total Dust levels (mg/m3) |
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|
|
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|
Activity |
n |
GM (GSD) |
AM |
Median |
Range |
|
|
|||||
|
All Controls |
19 |
0.21(2.4) |
0.29 |
0.20 |
0.04 - 1.20 |
|
All Coffee workers |
44 |
1.23(0.8) |
2.97 |
1.05 |
0.25 - 36.0 |
|
Sampling and supervision |
12 |
0.68(2.0) |
0.86 |
0.62 |
0.32 - 2.50 |
|
Handling parchment coffee |
6 |
1.02(1.5) |
1.07 |
1.05 |
0.52 - 1.50 |
|
Feeding the hopper |
5 |
1.63(1.7) |
1.81 |
1.60 |
0.77 - 3.10 |
|
Sorting of green coffee |
7 |
1.11(2.4) |
1.57 |
0.95 |
0.43 - 4.00 |
|
Husks handling |
2 |
1.33(1.5) |
1.34 |
1.34 |
0.97 - 1.70 |
|
Sweeping, cleaning coffee grade F |
6 |
8.20(3.7) |
14.2 |
7.55 |
1.70 - 36.0 |
|
Machine repair |
6 |
0.73(2.3) |
0.96 |
0.77 |
0.25 - 2.40 |
|
|
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|
GM - geometric mean, GSD - geometric standard deviation, AM - arithmetic mean, mg/m3 - milligram per cubic metre |
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|
Sakwari et al. BMC Pulmonary Medicine 2011 11:54 doi:10.1186/1471-2466-11-54 |
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