TABLE 2.
Concentrations of ergosterol, fungi, yeasts, and actinomycetes in building material samples
| Type of building material (no. of samples) | Concn [mean ± SD (median; range)] of:
|
||||||
|---|---|---|---|---|---|---|---|
| Ergosterol (μg/g) | Total spores (107 spore/g) | Mesophilic fungi (104 CFU/g) | Mesophilic yeasts (104 CFU/g) | Xerophilic fungi (104 CFU/g) | Xerophilic yeasts (104 CFU/g) | Mesophilic actinomycetes (104 CFU/g) | |
| Wood chip insulation (14) | 13 ± 16 (9.9; 0.92–68) | 9.7 ± 12 (6.3; 0.028–36) | 11 ± 18 (3.0; 0.084–68) | 0.036 ± 0.059 (≤0.14; f–0.14) | 8.6 ± 14 (1.8; 0.021–53) | 0.020 ± 0.036 (≤0.14; f–0.11) | 5.7 ± 12 (0.36; f–38) |
| Gypsum board (16) | 0.20 ± 0.26 (0.14; 0.083–1.2) | 0.99 ± 1.4 (0.65; 0.1–6.0) | 0.27 ± 0.51 (0.49; g–1.6) | 0.14 ± 0.41 (≤0.011; g–1.6) | 0.093 ± 0.21 (0.77; g–0.81) | 0.0076 ± 0.017 (≤0.011; g–0.049) | ≤0.011 (≤0.011; ≤0.011) |
| Glass wool insulation (10) | 0.89 ± 1.1 (0.34; 0.017–3.5) | 39 ± 34 (33.2; 3.4–79) | 36 ± 55 (8.2; 0.17–150) | 2.4 ± 2.6 (1.7; h–7.1) | 20 ± 30 (2.0; 0.078–79) | 0.16 ± 0.30 (0.0047; h–0.97) | 38 ± 96 (1.9; h–310) |
a
Detection limits: f, 100 to 1,430 CFU/g; g, 40 to 110 CFU/g; h, 690 to 720 CFU/g.