2-ME air concentrations and Friday post-shift urinary MAA concentrations among exposed and comparison group workers in baseline and two follow up surveys
| Exposed group | Comparison group* | |||
|---|---|---|---|---|
| February | April | August | February | |
| *2-ME was not detected in 10 locations of the administrative department of the comparison group. | ||||
| †Nine of the 32 workers in the heat press operation were randomly selected for personal monitoring. | ||||
| ‡Five day weekly personal mean exposure concentrations. | ||||
| §Daily personal eight hour full shift mean concentrations. | ||||
| ¶MAA concentration of Friday post-shift urine samples. | ||||
| **MAA was not detected in urine samples of workers in the administrative department of the comparison group. | ||||
| GM, geometric mean; GSD, geometric standard deviation; ND, non-detectable; Cr, creatinine. | ||||
| Air 2-ME | (n=29) | (n=9†) | ||
| Mean (SD) (ppm) | 35.7 (77.9)‡ | 2.65 (1.53)§ | 0.55 (0.73)§ | 0.19 (0.30)§ |
| GM (GSD) (ppm) | 9.62 (4.75) | 2.34 (1.76) | 0.34 (2.69) | 0.08 (5.09) |
| Minimum (ppm) | 0.75 | 0.2 | 0.1 | ND |
| Maximum (ppm) | 320 | 10 | 3.5 | 0.80 |
| Urinary MAA | (n=29) | (n=32) | ||
| Mean (SD) (mg MAA/g Cr) | 57.7 (31.8)¶ | 24.6 (14.7)¶ | 13.5 (10.6)¶ | 1.02 (1.25)¶ |
| GM (GSD) (mg MAA/g Cr) | 50.7 (1.67) | 19.7 (2.09) | 6.77 (4.19) | 0.53 (3.40) |
| Minimum (mg MAA/g Cr) | 24.3 | 4.60 | 0.95 | ND** |
| Maximum (mg MAA/g Cr) | 139 | 54.9 | 25.2 | 4.22 |