Schoenen D, Schlömer G
Hygiene-Institut, Universität Bonn.
Zentralbl Hyg Umweltmed. 1989 Aug;188(5):475-80.
Materials water comes into contact with can promote the microbial growth as it could be shown before. The reaction of an unspecific microorganism flora and of Legionella pneumophila in pipes and hoses has been described in the two previous communications. The investigation with L. pneumophila has shown that even a pathogen organism can grow upon the materials. Therefore it was of special interest to prove whether indicator organisms for the testing of drinking water can grow in pipes and hoses as well. Escherichia coli, Citrobacter freundii and Klebsiella pneumoniae grew after the experimental contamination for many weeks on the rubber hose until the test was finally stopped, in the other pipes and hoses (glass, high-grade steel, PVC, PE, PA, PTFE and silicone) E. coli could be found for maximal 7 weeks, Citrobacter freundii for 1 week and Klebsiella pneumoniae for maximal 3 weeks. In the copper pipe the organisms could be found only for a few days.
如之前所表明的，与水接触的材料会促进微生物生长。在前两篇通讯中已描述了管道和软管中未特定的微生物菌群以及嗜肺军团菌的反应。对嗜肺军团菌的研究表明，即使是致病生物体也能在这些材料上生长。因此，特别值得关注的是，用于检测饮用水的指示生物是否也能在管道和软管中生长。实验污染后，大肠杆菌、弗氏柠檬酸杆菌和肺炎克雷伯菌在橡胶软管上生长了数周，直到试验最终停止；在其他管道和软管（玻璃、高级钢、聚氯乙烯、聚乙烯、聚酰胺、聚四氟乙烯和硅树脂）中，大肠杆菌最多能存活7周，弗氏柠檬酸杆菌能存活1周，肺炎克雷伯菌最多能存活3周。在铜管中，这些生物体只能存活几天。
