DOI: 10.1016/j.watres.2017.12.027
Scopus记录号: 2-s2.0-85039870499
论文题名: Biofilms in shower hoses
作者: Proctor C.R. ; Reimann M. ; Vriens B. ; Hammes F.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 274
结束页码: 286
语种: 英语
英文关键词: Biofilm
; Building plumbing
; Heavy metals
; Microbiome
; Shower hose
Scopus关键词: Bacteria
; Bioaccumulation
; Buildings
; Cells
; Cytology
; Health risks
; Heavy metals
; Hose
; Lead
; Plumbing
; Potable water
; Surveys
; Water
; Bacterial growth
; Cell concentrations
; Critical elements
; Ecological theory
; Metal accumulation
; Microbiome
; Negative correlation
; Potential targets
; Biofilms
; calcium
; copper
; disinfectant agent
; drinking water
; iron
; lead
; magnesium
; bacterium
; biochemical composition
; biofilm
; cell organelle
; dispersal
; drinking water
; ecological theory
; equipment
; growth
; health risk
; heavy metal
; pathogen
; species diversity
; Acanthamoeba
; Acanthamoeba ployphaga
; Acidobacteria
; Actinobacteria
; Amoeba (genus)
; amplicon
; Article
; bacterial microbiome
; Belgium
; biofilm
; building
; concentration (parameters)
; controlled study
; Deinococcus
; Denmark
; ecological niche
; elemental analysis
; flow cytometry
; Germany
; Latvia
; Legionella pneumophila
; metal accumulation
; microbial diversity
; Mycobacterium avium
; nonhuman
; oxidation
; population dispersal
; Portugal
; priority journal
; Serbia
; South Africa
; Spain
; species composition
; Switzerland
; Thermus
; thickness
; United Kingdom
; United States
; Verbamoeba vermiformis
; water flow
; water sampling
; water treatment
; Bacteria (microorganisms)
; Legionella
; Mycobacterium
; Pseudomonas
英文摘要: Shower hoses offer an excellent bacterial growth environment in close proximity to a critical end-user exposure route within building drinking water plumbing. However, the health risks associated with and processes underlying the development of biofilms in shower hoses are poorly studied. In a global survey, biofilms from 78 shower hoses from 11 countries were characterized in terms of cell concentration (4.1 × 104–5.8 × 108 cells/cm2), metal accumulation (including iron, lead, and copper), and microbiome composition (including presence of potential opportunistic pathogens). In countries using disinfectant, biofilms had on average lower cell concentrations and diversity. Metal accumulation (up to 5 μg-Fe/cm2, 75 ng-Pb/cm2, and 460 ng-Cu/cm2) seemed to be partially responsible for discoloration in biofilms, and likely originated from other pipes upstream in the building. While some genera that may contain potential opportunistic pathogens (Legionella, detected in 21/78 shower hoses) were positively correlated with biofilm cell concentration, others (Mycobacterium, Pseudomonas) had surprisingly non-existent or negative correlations with biofilm cell concentrations. In a controlled study, 15 identical shower hoses were installed for the same time period in the same country, and both stagnant and flowing water samples were collected. Ecological theory of dispersal and selection helped to explain microbiome composition and diversity of different sample types. Shower hose age was related to metal accumulation but not biofilm cell concentration, while frequency of use appeared to influence biofilm cell concentration. This study shows that shower hose biofilms are clearly a critical element of building drinking water plumbing, and a potential target for building drinking water plumbing monitoring. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113024
Appears in Collections: 气候减缓与适应
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作者单位: Department of Environmental Microbiology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Environmental Systems Science, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland; Department of Water Resources and Drinking Water, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
Recommended Citation:
Proctor C.R.,Reimann M.,Vriens B.,et al. Biofilms in shower hoses[J]. Water Research,2018-01-01,131