Pasanen A L, Rautiala S, Kasanen J P, Raunio P, Rantamäki J, Kalliokoski P
University of Kuopio, Department of Environmental Sciences, P.O. Box 1627, FIN-70211 Kuopio, Finland.
Indoor Air. 2000 Jun;10(2):111-20. doi: 10.1034/j.1600-0668.2000.010002111.x.
We determined the moisture levels, relative humidity (RH) or moisture content (MC) of materials, and concentrations of culturable fungi, actinomycetes and total spores as well as a composition of fungal flora in 122 building material samples collected from 18 moisture problem buildings. The purpose of this work was to clarify if the is any correlation between the moisture parameters and microbial levels or generic composition depending on the type of materials and the time passed after a water damage. The results showed an agreement between the concentrations of total spores and culturable fungi for the wood, wood-based and gypsum board samples (r > 0.47). The concentrations of total spores and/or culturable fungi correlated with RH of materials particularly among the wood and insulation materials (r > 0.79), but not usually with MC (r < 0.45). For the samples collected from ongoing damage, there was a correlation between RH of materials and the concentrations of total spores and culturable fungi (r > 0.51), while such a relationship could not be observed for the samples taken from dry damage. A wide range of fungal species were found in the samples from ongoing damage, whereas Penicillia and in some cases yeasts dominated the fungal flora in the dry samples. This study indicates that fungal contamination can be evaluated on the basis of moisture measurements of constructions in ongoing damage, but the measurements are not solely adequate for estimation of possible microbial growth in dry damage.
我们测定了从18座存在潮湿问题的建筑物中采集的122份建筑材料样本的水分含量、相对湿度（RH）或含水量（MC），以及可培养真菌、放线菌和总孢子的浓度，还有真菌菌群的组成。这项工作的目的是弄清楚水分参数与微生物水平或种类组成之间是否存在相关性，这种相关性是否取决于材料类型以及水损发生后的时间。结果表明，木材、木质基材料和石膏板样本的总孢子浓度与可培养真菌浓度之间存在一致性（r>0.47）。总孢子浓度和/或可培养真菌浓度与材料的相对湿度相关，尤其是在木材和绝缘材料中（r>0.79），但通常与含水量无关（r<0.45）。对于从持续受损处采集的样本，材料的相对湿度与总孢子浓度和可培养真菌浓度之间存在相关性（r>0.51），而对于从干燥受损处采集的样本则未观察到这种关系。在持续受损样本中发现了多种真菌，而在干燥样本中，青霉以及在某些情况下酵母在真菌菌群中占主导地位。这项研究表明，对于持续受损的建筑，可以根据水分测量来评估真菌污染情况，但这些测量对于估计干燥受损情况下可能的微生物生长并不完全足够。
